Eagle Ballistics vs Calypso Ballistics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Eagle Ballistics
This app provides advanced ballistics calculations for long-range shooting and competitive marksmen. It offers a fast and accurate engine with extensive calibration tools and built-in documentation. A free version is available with a range limitation, with subscription options for expanded features.
- Fast and accurate ballistic engine
- Calibration and setup tools
- Built-in detailed documentation
- Support for wind meters and range finders
- PRS mode for multi-target and moving targets
- Rifle and bullet databases
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A full featured ballistics app for long range hunters and PRS shooters. Incredibly fast and accurate ballistic engine. Many calibration and setup tools. Detailed documentation is built-in. Free Download includes almost all features with 100yd Range limitation. Paid subscriptions: * Lite Subscription: Most features are available up to 500yd * Long Range: No range limit * PRS: Multi-Target and Moving Targets Documentation and Videos * Detailed Built-in Documentation for all Features * Videos: see http://eagleballistics.com Ballistic Engine * Ballistic Coefficient * Gyroscopic Stability * Air: Temperature, Pressure, Humidity, Density * Wind: Cross, Head/Tail * Angle Modified Range * Spin Drift * Aerodynamic Jump * Coriolis (horizontal) * Vertical Eotvos * Tripod shooting error correction * Valley Wind Correction Calculations * Max-ordinate calculation * Retained Energy on Impact * Retained Velocity on impact * Flight Time * Speed of Sound * Transonic Zone Wind * Manual Entry * Bluetooth Wind Meter * Advanced Wind Subscription includes Rain, Mirage, Snow modes Supported iPhone Sensors * Latitude from internal GPS * Station Pressure * Camera * Screen Ruler * Angle Sensor for Inclination * Compass for Azimuth Bluetooth Connectivity * Most Range Finders * Most Environmental Sensors * Most Wind Meters Warning * Excessive bullet RPM * Insufficient Gyroscope Stability * Max Hunting Range for Lead/Copper Bullets Units * MOA or MIL Scope Turrets * Imperial and Metric Units Built in Tools & Calibration * Scope Correction Factor Calculator * Ballistic Coefficient and Muzzle Velocity Truing * Scope Height: Visual Ruler or Calipers * Zero Height & Offset: Visual Ruler * Ranging with Reticle and/or Animal Size * Target Inclination and Azimuth * Target Speed * Wind Average Databases * Rifle (Max 30 Rifles) * Bullets Library * Lane/Targets Range Cards * Standard Drop Table * Wind Variation Table * Detailed Target Analysis * Rifle Stock Table PRS Mode * Multiple Lanes with Multiple Targets * Instant Calculation and Update for All Targets * Relative Wind According to Target Azimuth * Allows Wind Variation Settings * Moving Target Lead Calculation * Prism mode and tool for calibratin Diagnostics * Sensitive Analysis * Accuracy Analysis License: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://eagleballistics.com/privacy-policy Patent No .: US 11,415,592 B2
Calypso Ballistics
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Calypso Ballistics turns your Calypso ultrasonic anemometer into a wind instrument for precision shooting: it measures the real wind at your position and breaks it down against your line of fire, ready to take to your ballistic calculator. THE WIND, FROM THE LINE OF FIRE Set the anemometer pointing downrange. The app splits the wind into its crosswind component — with the side it comes from — and its head or tail component, and gives you the wind value and the clock hour it blows from. SHOOTER'S CLOCK AND MAGNETIC ROSE A dial with the shooter's clock — 12 o'clock is the line of fire — inside a magnetic rose turned to your bearing to target. At a glance: which hour the wind is from, what that wind is worth, and how strong. LULL, NOW AND GUST The crosswind bracket over a window you choose, so you see the band the wind moves in instead of chasing the instant reading. AIR DENSITY AND DENSITY ALTITUDE With a WeatherDot paired, or with temperature, pressure and humidity entered by hand, it computes humid-air density and density altitude, with the whole calculation in view. It tells station pressure from barometric, the mistake that hurts a ballistic solution most. NO BLACK BOXES Every formula the app uses is explained inside it. LOGBOOK AND CHARTS Every connection is recorded as a session, with wind, direction, temperature, pressure and humidity. Live charts and CSV export. Data stays on your device. ALSO · Three modes: simple, standard and pro · Long-press configurable readouts · Guide to placing the anemometer pointing at the target · Demo mode to try the app without a sensor · Configurable wind, temperature and pressure units · Screen kept awake while in use · English and Spanish Calypso Ballistics does not compute trajectories or firing corrections: it measures the wind and the atmosphere so your ballistic calculator works with real data. It is a measurement instrument for sport shooting. Requires a Calypso Instruments Bluetooth anemometer. The WeatherDot is optional.
Screenshots
Verdict
The clearest difference is in-app purchases: Calypso Ballistics at none against Eagle Ballistics's 10. Calypso Ballistics also leads on update cadence (every 5 days vs monthly) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Eagle Ballistics sells 10 in-app purchases, starting at $2.99 per month. Calypso Ballistics asks for nothing beyond the download.
Eagle Ballistics ships an update monthly, Calypso Ballistics every 5 days. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.
| Parameter | Eagle Ballistics | Calypso Ballistics |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (30 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 30 — better | — |
| Update frequency | Monthly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 20 MB |
| Age rating | 17+ | 4+ |
| Developer | Eagle Ballistics LLC | Calypso Instruments |
In-app purchases
Eagle Ballistics
- Lite$2.991 Month
- Long Range Monthly$4.991 Month
- PRS$9.991 Month
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- Long Range + Advanced Wind Monthly$14.991 Month
- Lite$14.991 Year
- PRS + Wind$19.991 Month
- Long Range$24.991 Year
- PRS$74.991 Year
- Long Range + Wind Yearly$124.991 Year
- PRS + Wind$174.991 Year
Calypso Ballistics
No in-app purchases
Questions
Is Eagle Ballistics free?
Is Calypso Ballistics free?
Do Eagle Ballistics or Calypso Ballistics have ads?
Which is updated more often, Eagle Ballistics or Calypso Ballistics?
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