Comparison

Eagle Ballistics vs Calypso Ballistics

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

Calypso Ballistics

Features
Read full description

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

Eagle Ballistics4 screens
Calypso Ballistics4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Eagle Ballistics versus Calypso Ballistics: the parameters behind the verdict, then further details
ParameterEagle BallisticsCalypso Ballistics
PriceFreeFree
Rating4.8 (30 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings30 — better—
Update frequencyMonthlyEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size13 MB20 MB
Age rating17+4+
DeveloperEagle Ballistics LLCCalypso Instruments

In-app purchases

10 purchases

Eagle Ballistics

Subscriptions10
  • Lite$2.991 Month
  • Long Range Monthly$4.991 Month
  • PRS$9.991 Month
Show 7 more
  • 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
None

Calypso Ballistics

No in-app purchases

Questions

Is Eagle Ballistics free?
Eagle Ballistics is free to download, with in-app purchases available.
Is Calypso Ballistics free?
Calypso Ballistics is free to download, with no in-app purchases.
Do Eagle Ballistics or Calypso Ballistics have ads?
Neither Eagle Ballistics nor Calypso Ballistics shows ads.
Which is updated more often, Eagle Ballistics or Calypso Ballistics?
Eagle Ballistics ships an update monthly, and Calypso Ballistics every 5 days. Most recently, Eagle Ballistics was updated on November 8, 2026 and Calypso Ballistics on November 6, 2026.

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