Android · iPhone · Real GA ballistics

The Field Target range that fits in your pocket. El campo de Field Target que cabe en tu bolsillo.

A real ballistics engine, authentic scope reticles and live, gusting wind — so you can train reticle and wind reading anywhere. Un motor balístico real, retículas auténticas de visores y viento vivo y racheado — entrena la lectura de retícula y viento donde sea.

Get it onGoogle Play Download on theApp Store See the ballistics →
No ads · no tracking
No subscriptions
10 languages
Metric or yards
WindMaster Field Target scope view: reticle over a target, live wind and elevation
Real GA drag model Validated against pro calculators 26+ real reticles Offline single-player No subscription — ever
Everything in one app

A learning tool first

Ante todo, una herramienta de aprendizaje

Field Target Wind Master is built as a trainer — the game is how you internalise that knowledge under pressure. These are the tools behind it.

Field Target Wind Master está pensado como entrenador — el juego es la forma de interiorizar ese conocimiento bajo presión. Estas son las herramientas que lo sostienen.

Ballistic CalculatorCalc balística

Pellet, velocity, atmosphere and scope in one solver.

Wind TableTabla de viento

Drift reference by range and wind speed.

Wind AreasÁreas de viento

Wind drift across distance bands, with walls and trees.

POI ReticleRetícula POI

Live point of impact projected on your reticle.

Angle TableTabla de ángulos

Angle correction with elevation in clicks.

Field CalibrationCalibración de campo

True your data — BC, speed and scope height — to your rifle.

HFT Dope CardChuleta HFT

A holdover card built for your exact reticle.

Training LogEntrenamiento

Log real shoots, see weak points, export your history.

Under the hood

Real ballistics, not an arcade

Balística de verdad, no un arcade

A time-stepped simulator with a drag model tuned for diabolo pellets. Feed it your pellet, velocity and atmosphere and it tells you exactly where the pellet goes.

Un simulador por pasos de tiempo con un modelo de resistencia ajustado a los balines diábolo. Dale tu balín, velocidad y atmósfera y te dice exactamente dónde cae.

Pellet path

Trayectoria

Height vs your line of sight, 25 m zeroAltura frente a tu línea de mira, cero a 25 m
pellet pathline of sight

Wind drift

Deriva del viento

10 km/h full crosswind — pellet vs pelletViento cruzado de 10 km/h — balín contra balín
.177 · 8.4 gr.22 · 18 gr

Velocity retention

Retención de velocidad

.177 8.4 gr — ~56% of muzzle energy at 50 m.177 8,4 gr — ~56% de la energía inicial a 50 m
velocity (m/s)

Illustrative curves in realistic ranges — the app computes exact values from your profile.Curvas ilustrativas en rangos realistas — la app calcula los valores exactos desde tu perfil.

How the ballistics engine works →
New hardware

Live wind from a Bluetooth anemometer

Viento real desde un anemómetro Bluetooth

WindMaster pairs with real Bluetooth wind meters. Connect a BTMETER BT-8806WM, a Tempest WEATHERmeter Ballistic or a Calypso Ultrasonic Portable Mini and the app reads your actual wind speed — live, average and gust, then computes your holdover on the reticle in real time. The Calypso and the WEATHERmeter set the wind direction for you as well; with the BTMETER you set it yourself, just as you’d read it from the flag on the course.

WindMaster se conecta con medidores de viento Bluetooth reales. Empareja un BTMETER BT-8806WM, un Tempest WEATHERmeter Ballistic o un Calypso Ultrasonic Portable Mini y la app lee tu velocidad de viento real —en vivo, media y racha—, y calcula tu holdover en la retícula en tiempo real. El Calypso y el WEATHERmeter ponen también la dirección del viento por ti; con el BTMETER la indicas tú, igual que la leerías en la bandera del recorrido.

Supported meters
BTMETER BT-8806WM-APP cup anemometer BTMETER BT-8806WM Wind speed, temperature, pressure Tempest WEATHERmeter Ballistic wind meter Tempest WEATHERmeter Ballistic Wind speed and direction, with compass Calypso Ultrasonic Portable Mini wind meter Calypso Ultrasonic Portable Mini Wind speed and direction, ultrasonic
  • Live, average and gust wind speed from the meter
  • Wind direction straight from the Calypso or the WEATHERmeter, or set by hand
  • Real-time holdover projected on your reticle
  • Field practice with your real scope and ballistic profile

The Calypso Ultrasonic is live. The Calypso Ultrasonic Portable Mini has no moving parts at all: it takes the wind’s speed and its angle from the same ultrasonic measurement, so both arrive the moment you hold it up — nothing to spin up, and no compass to calibrate. Point its mark down the lane and WindMaster fills in the wind clock for you. The Tempest WEATHERmeter Ballistic does the same with an impeller and a built-in compass — either way, no more dialing the wind clock by hand. El Calypso Ultrasonic ya funciona. El Calypso Ultrasonic Portable Mini no tiene ninguna pieza móvil: saca la velocidad del viento y su ángulo de la misma medición ultrasónica, así que los dos llegan en cuanto lo levantas, sin nada que arranque y sin brújula que calibrar. Apunta su marca hacia el blanco y WindMaster rellena el reloj de viento por ti. El Tempest WEATHERmeter Ballistic hace lo mismo con hélice y brújula integrada: en ambos casos, se acabó ajustar el reloj de viento a mano.

More hardware is on the way. Do you make a Bluetooth wind meter or other shooting hardware and want it supported in WindMaster? Get in touch and we'll look at adding it. Llegará más hardware. ¿Fabricas un medidor de viento Bluetooth u otro hardware de tiro y quieres que sea compatible con WindMaster? Escríbenos y valoramos añadirlo.

The compatible meters (BTMETER BT-8806WM-APP and Tempest WEATHERmeter Ballistic) are sold separately by their manufacturers.

Live field practice: real anemometer wind (live, average, gust) computing holdover on the reticle
Only for the very brave

360 VIEW: your real rifle, a virtual range

VISTA 360: tu carabina real, un campo virtual

This one is not for everybody. 360 VIEW is for shooters who are not scared of a bit of DIY. You clamp a phone in front of your scope, put a close-up lens on the objective so the scope can focus on the screen, and WindMaster draws a full 360° range around you that stays locked to the world as you move. You aim with your own rifle, your own scope and your own hold, take the shot, and the app scores it.

Esto no es para todo el mundo. VISTA 360 es para tiradores a los que no les asusta un poco de bricolaje. Sujetas un móvil delante del visor, pones una lente de aproximación en el objetivo para que el visor enfoque la pantalla, y WindMaster dibuja un campo de 360° a tu alrededor que se queda fijo en el mundo mientras te mueves. Apuntas con tu carabina, tu visor y tu propio pulso, haces el disparo y la app lo puntúa.

Real builds from real shooters, to give you ideas for your own.

Montajes reales de tiradores reales, para darte ideas para el tuyo.

A rifle on the bench with a carbon tube mount holding the phone in front of the scope, CAD drawings of the build on the monitors
Designed in CAD, built with carbon tubes and 3D-printed parts
View through the scope: a Bench Rest card in sharp focus with shot holes on the bull
Through the scope: sharp, with your own reticle
A +2 close-up lens in a 3D-printed holder on the scope objective, with a tape measure
+2 lens in a printed holder on the objective
Carbon fibre tubes clamped to a PCP rifle holding the phone in front of the scope
Another build: carbon tubes on a PCP
Shooter's view behind the rifle: the phone at the end of the mount and the M5StickS3 wired to a trigger button
Behind the rifle, M5StickS3 wired to a trigger connector
A DIY trigger connector: a small switch behind the trigger blade wired to the M5StickS3 Grove port
The DIY trigger connector: a small switch behind the trigger, wired to the M5StickS3
FT and HFT courses Standing · Kneeling Bench Rest · Paper Daily challenge Stats by position

What you need

Qué necesitas

A phone

Android or iPhone with WindMaster installed. A spare one is ideal: it lives on the rifle while you shoot.

A phone mount

Something that holds the phone firmly in front of the scope, screen facing the objective, and moves with the rifle. We build ours from carbon fibre tubes, see below.

Your rifle and scope

Always unloaded. Dry firing is optional, and never with a springer: it damages it. Our recommendation is the M5StickS3 with a trigger connector instead (below).

Carbon fibre tubes

Carbon fibre tubes (x3)

For the mount: three tubes, 50 cm long and 2 cm in diameter. Three fixing points hold the phone rock steady, so it does not move at all.

About $30
Close-up lens filters, +1 to +10

Close-up lens (+2)

A +2 dioptre close-up filter over the objective lets the scope focus on the phone's screen. Pick one bigger than your scope's objective diameter. Put the phone about 48 cm from the lens and finish with the side focus. Only needed on scopes of 10x magnification or more.

About $10
M5StickS3, 48 x 24 x 15 mm
Recommended

M5StickS3

A tiny Bluetooth remote on the rifle: start, shoot, move and turn the reticle, change magnification and zero the gyro without touching the phone.

Make a DIY connector to your trigger: a small switch at the trigger wired to the stick's Grove port (GND and G9). You shoot with your own trigger, and the rifle never has to dry fire. Never wire it to the 5V pin.

About $25

Unloaded, every time. The phone sits in front of your scope, close to the muzzle. Check the chamber and the magazine before you mount it, and keep pellets out of reach while you train. Never load a pellet: 360 VIEW does not need one. Descargada, siempre. El móvil va delante del visor, cerca de la boca del cañón. Revisa la recámara y el cargador antes de montarlo y aparta los balines mientras entrenas. Nunca cargues un balín: VISTA 360 no lo necesita.

M5StickS3 firmware

Firmware del M5StickS3

Download StickRemote 4.0 and flash it to your M5StickS3 with the Arduino IDE. The stick shows one menu: B moves to the next item, A opens it.

Descarga StickRemote 4.0 y grábalo en tu M5StickS3 con el Arduino IDE. El stick muestra un único menú: B pasa a la siguiente opción, A la abre.

Download StickRemote 4.0
  1. Install Arduino IDE 2.
  2. File > Preferences > Additional boards manager URLs: https://static-cdn.m5stack.com/resource/arduino/package_m5stack_index.json
  3. Boards Manager: install M5Stack (3.2.5 or newer).
  4. Library Manager: install M5Unified (accept M5GFX) and NimBLE-Arduino 2.x.
  5. Tools > Board > M5Stack > M5StickS3, open the file and Upload.
  6. No port? Hold the side button about 2 s until the green LED blinks, upload, then press it once.
  7. In the app: GAME > 360 VIEW, tap M5StickS3 to connect.
  1. Instala Arduino IDE 2.
  2. Archivo > Preferencias > URLs adicionales del gestor de placas: https://static-cdn.m5stack.com/resource/arduino/package_m5stack_index.json
  3. Gestor de placas: instala M5Stack (3.2.5 o posterior).
  4. Gestor de bibliotecas: instala M5Unified (acepta M5GFX) y NimBLE-Arduino 2.x.
  5. Herramientas > Placa > M5Stack > M5StickS3, abre el archivo y pulsa Subir.
  6. ¿No aparece el puerto? Mantén el botón lateral unos 2 s hasta que parpadee el LED verde, sube y púlsalo una vez.
  7. En la app: JUEGO > VISTA 360, toca M5StickS3 para conectar.

Many thanks to Naim Kesepara for bringing up the initial idea, and for the help with the testing and the designs!

¡Muchas gracias a Naim Kesepara por plantear la idea inicial y por su ayuda con las pruebas y los diseños!

Three disciplines + multiplayer

Practice how you compete

Entrena como compites

Hunter Field Target scope view with stance and inclined shot
Field Target · HFT

Knockdowns, stances and angled shots

Siluetas abatibles, posturas y tiros inclinados

Field Target runs knockdown lanes with kill zones from 9 to 50 m across three difficulties. Hunter Field Target adds forced stances — standing, kneeling, supported — and inclined shots that make you correct like you would on the course, with reduced kill zones on close targets.

Field Target ofrece recorridos con siluetas y kill zones de 9 a 50 m en tres dificultades. Hunter Field Target añade posturas obligadas — de pie, de rodillas, con apoyo — y tiros inclinados que te obligan a corregir como en el recorrido, con zonas de muerte reducidas en blancos cercanos.

9–50 mEasy · Medium · DifficultReduced kill zonesInclined fire
Bench Rest scoring card in WindMaster
Bench Rest · Long range · Online

Bench Rest cards and live multiplayer

Cartones de Bench Rest y multijugador en vivo

Shoot the official 25-card at 25 or 50 m with WRABF scoring and X-count tie-breaks, or stretch out in free practice to 300 m. Online, every shooter faces the same seeded course with the rival's progress live — including a "wind only" mode that competes on the one thing that really separates good from great.

Dispara el cartón oficial de 25 casillas a 25 o 50 m con puntuación WRABF y desempate por X, o alárgate en práctica libre hasta 300 m. Online, todos afrontan el mismo recorrido con la misma semilla y el progreso del rival en directo — incluido un modo "solo viento" que compite en lo que de verdad separa a los buenos de los muy buenos.

Bench Rest 25 / 50 mWRABF scoringUp to 300 mSeeded multiplayer
WindMaster scope picker: real reticles from Sightron, Falcon, Nikko and more, with SFP/FFP tags
Authentic optics

Train with your exact reticle

Entrena con tu retícula exacta

Aim through a simulated scope with reticles from real models — Sightron, Schmidt & Bender, Falcon, Element, Optisan, Delta, Nikko Stirling, Hawke, Valiant, Bushnell and more. Each reticle is individually calibrated with its true cm and inch marks at every magnification, with correct second-focal-plane behaviour and a turret with clicks, turns and your scope's click value.

Apunta a través de un visor simulado con retículas de modelos reales — Sightron, Schmidt & Bender, Falcon, Element, Optisan, Delta, Nikko Stirling, Hawke, Valiant, Bushnell y más. Cada retícula está calibrada individualmente con sus marcas reales en cm y pulgadas a cada aumento, con el comportamiento correcto de segundo plano focal y una torreta con clics, vueltas y el valor de clic de tu visor.

34
real reticles
SFP + FFP
handled correctly
2
free to start
The full list

Every scope in the app

Todos los visores de la app

Grouped the way the app groups them, with the focal plane and the magnification range each reticle is drawn for. Every one of them is free.

Agrupados como los agrupa la app, con el plano focal y el rango de aumentos para el que está dibujada cada retícula. Todos son gratuitos.

Field Target

16
  • Sightron SIII Mil-HashSFP10–50×
  • Sightron SIII MOA-2SFP10–50×
  • Sightron S6 MH-FTSFP10–60×
  • Falcon X50 MOA200SFP10–50×
  • Falcon X60i E-CDiSFP10–60×
  • Nikko Diamond MilDotSFP10–50×
  • Nikko Hornet HMD-IRSFP10–50×
  • March X MRT-WFTSFP10–60×
  • March X MRT-FTSFP10–60×
  • March Deon MRT-WFTSFP10–80×
  • VO Continental VCO-6SFP10–48×
  • Delta Stryker DLS 1SFP5–50×
  • Delta Stryker DLS 3SFP5–50×
  • Schmidt & Bender FT 2LSFP12.5–50×
  • Schmidt & Bender FT 3LSFP12.5–50×
  • Kahles K1050i MHRSFP10–50×

Hunting FT

8
  • Optisan CP mil-MH10XSFP3–12×
  • Falcon Endura S10 i+ MP1SFP3–10×
  • Falcon Endura S10i P22SFP3–10×
  • Valiant ThemysSFP2–12×
  • Vortex Viper EBR-4FFP2–10×
  • Athlon Argos APMR MilFFP6–24×
  • Discovery HD MPVO MilFFP3–12×
  • MTC Viper SCB2SFP3–12×

Versatile

9
  • Hawke SideWinder Half MilSFP8–32×
  • Bushnell Elite MultiXSFP8–32×
  • Hawke EclipseSFP4–16×
  • Vision Dual RetSFP10–40×
  • Element Helix APR-1C MilFFP6–24×
  • Element Helix APR-1C MOAFFP6–24×
  • VO Continental VCO-34FFP5–30×
  • VO Veyron SCOM-41SFP2–10×
  • VO Veyron SCOC-43SFP1–8×

Benchrest

1
  • Sentinel X COM-25SFP10–40×

The most requested reticles are added as they are voted for — tell us yours at windmasterft@gmail.com.Las retículas más solicitadas se van añadiendo según los votos — dinos la tuya en windmasterft@gmail.com.

Reticle designs are reproduced for reference and training purposes only. All trademarks belong to their respective owners.Las retículas se reproducen únicamente con fines de referencia y entrenamiento. Todas las marcas pertenecen a sus respectivos propietarios.

Pricing

Free. All of it.

Gratis. Todo.

WindMaster is free for everyone now, and that is thanks to the shooters who bought Premium, or bought the app while it was paid. Your support paid for the work that built it. Thank you, and thanks as well to everyone who tested builds, reported bugs and sent ideas.

WindMaster ya es gratis para todos, y es gracias a los tiradores que compraron Premium o compraron la app cuando era de pago. Vuestro apoyo pagó el trabajo que la construyó. Gracias, y gracias también a todos los que probasteis versiones, informasteis de errores y enviasteis ideas.

Free

Everything included · nothing to buy
  • All three disciplines and practice modes
  • Every scope reticle in the app
  • The full ballistics calculator, Field Calibration included
  • Online multiplayer
  • No ads, no subscriptions, no in-app purchases

Bought Premium before?

Thank you
  • Nothing changes for you, and there is nothing more to pay
  • Your purchase stays on your Google Play or Apple account
  • The same goes for anyone who bought the iPhone app when it was sold upfront
  • If paid features are ever added, you get them free
  • A new project is on its way, and you will have free access to it when it is released

Enjoying WindMaster? If you would like to help keep it going, you can buy me a coffee.

¿Te gusta WindMaster? Si quieres ayudar a que siga adelante, puedes invitarme a un café.

Support the project →
The people behind the sport

Specialized shops

Tiendas especializadas

Field Target, HFT and Bench Rest need specialised equipment, and these are the shops that know the disciplines and supply them. The same list appears inside the app, on the WindMaster board.

El Field Target, el HFT y el Bench Rest requieren material especializado, y estas son las tiendas que conocen las disciplinas y las abastecen. La misma lista aparece dentro de la app, en el Tablón WindMaster.

Armería Parriego Armería Parriego Un poco de óxido Un poco de óxido Submoa Systems Submoa Systems Garima Garima Maestro Design FT Maestro Design FT Mamba Target Mamba Target Rowan Engineering Rowan Engineering
FAQ

Good questions

Buenas preguntas

Is it a game or a training tool?¿Es un juego o una herramienta de entrenamiento?

Both — and it's built trainer-first. Think of it less as a game and more as a wind-and-reticle trainer: the game is how you internalise that knowledge under pressure, while having fun.

Ambas cosas — y está pensado ante todo como entrenador. Piénsalo menos como un juego y más como un entrenador de retícula y viento: el juego es la forma de interiorizar ese conocimiento bajo presión, mientras disfrutas.

How accurate is the ballistics?¿Qué precisión tiene la balística?

The engine is a time-stepped simulation using a GA drag model tuned for diabolo pellets, validated against professional ballistic calculators — reproducing elevation and windage to under 0.2 cm out to 200 m. It models real atmosphere (temperature, altitude, pressure, humidity), Magnus spin drift and proper inclined fire.

El motor es una simulación por pasos de tiempo con un modelo de resistencia GA ajustado a los diábolos, contrastado con calculadoras balísticas profesionales — reproduce elevación y deriva con menos de 0,2 cm hasta 200 m. Modela atmósfera real (temperatura, altitud, presión, humedad), deriva Magnus por giro y tiro inclinado correcto.

Does it work offline? What about my data?¿Funciona sin conexión? ¿Y mis datos?

All single-player features work fully offline. Settings and ballistic profiles are stored locally on your device. There are no ads, no tracking and no crash reporting. Besides the optional online multiplayer, the only thing sent is anonymous usage counts (which features and scopes are used, never who you are). See the privacy policy.

Todas las funciones de un jugador funcionan sin conexión. Los ajustes y perfiles balísticos se guardan localmente en tu dispositivo. No hay anuncios, ni rastreo, ni informes de fallos. Aparte del multijugador online opcional, lo único que se envía son recuentos de uso anónimos (qué funciones y visores se usan, nunca quién eres). Consulta la política de privacidad.

Which units and pellets are supported?¿Qué unidades y balines admite?

Meters or yards, km/h or mph, m/s or fps, grains or grams, mil or MOA, joules or ft-lb, °C or °F, hPa or inHg. There's a built-in pellet library across .177, .22 and .25, and you can add your own pellets and multiple rifle profiles.

Metros o yardas, km/h o mph, m/s o fps, grains o gramos, mil o MOA, julios o ft-lb, °C o °F, hPa o inHg. Incluye una biblioteca de balines en .177, .22 y .25, y puedes añadir tus propios balines y varios perfiles de rifle.

What languages is the app in?¿En qué idiomas está la app?

Ten: English, Spanish, Portuguese (Portugal), Portuguese (Brazil), Italian, Dutch, Czech, German, French and Polish. The app picks your device language on first launch, and you can change it any time in Settings.

Diez: inglés, español, portugués (Portugal), portugués (Brasil), italiano, neerlandés, checo, alemán, francés y polaco. La app detecta el idioma de tu dispositivo al abrirla por primera vez, y puedes cambiarlo cuando quieras en Ajustes.

What does it cost?¿Cuánto cuesta?

Nothing. On Android and on iPhone the app is completely free: every discipline, every scope, the full calculator with Field Calibration, and multiplayer. There are no in-app purchases, no subscriptions and no ads. If you bought Premium, or bought the iPhone app back when it was sold upfront, your purchase stays on your store account and nothing changes for you. If paid features are added in the future, they will be included for you at no extra cost. A new project is also on its way, and you will have free access to it when it is released. Thank you for your support.

Nada. En Android y en iPhone la app es totalmente gratuita: todas las disciplinas, todos los visores, la calculadora completa con la Calibración de Campo y el multijugador. No hay compras dentro de la app, ni suscripciones, ni anuncios. Si compraste Premium, o compraste la app de iPhone cuando se vendía por adelantado, tu compra sigue en tu cuenta de la tienda y para ti no cambia nada. Si en el futuro llegan funciones de pago, para ti estarán incluidas sin coste adicional. Además, hay un nuevo proyecto en camino, y tendrás acceso gratuito cuando salga. Gracias por tu apoyo.

Get in touch

Talk to the person who built it

Habla con quien la ha creado

WindMaster is made by one shooter, not a support department. Bug reports, reticle requests and course feedback come straight to me, and I read every one.

WindMaster la hace un tirador, no un departamento de soporte. Los fallos, las peticiones de retícula y tus comentarios me llegan directamente, y los leo todos.

Write to windmasterft@gmail.com

What helps me answer faster

Lo que me ayuda a responderte antes

  • Your rifle, pellet and scope, if it is a ballistics question.
  • The screen you were on, what you expected and what happened instead.
  • Your phone model, and whether you installed from Google Play or the App Store.
  • A screenshot, whenever there is something to see.
  • Tu carabina, tu balín y tu visor, si es una duda de balística.
  • La pantalla en la que estabas, qué esperabas y qué ocurrió en su lugar.
  • El modelo de tu móvil, y si la instalaste desde Google Play o desde la App Store.
  • Una captura de pantalla, siempre que haya algo que ver.

Reticle and scope requests are on hold for now. No new reticles are being added at the moment.

Las peticiones de retícula y visor están en pausa por ahora. De momento no se añaden retículas nuevas.

Write it here

Escribe aquí

This site has no server and collects nothing. The button opens your own email app with the message ready, so you send it yourself and keep a copy. If nothing opens, copy the address above.

Esta web no tiene servidor y no recoge nada. El botón abre tu propia app de correo con el mensaje preparado, así lo envías tú y te queda una copia. Si no se abre nada, copia la dirección de arriba.

Bring the range with you.

Lleva el campo contigo.

Read the wind, correct on the reticle, and make the shot — anywhere.

Lee el viento, corrige en la retícula y haz el disparo — donde sea.

Get it onGoogle Play Download on theApp Store