# Calypso Ballistics — Wind you measure, not guess

> Wind you measure, not guess (iPhone/iPad app by Calypso Instruments.)

- Source: https://appshunter.io/ios/app/calypso-ballistics/id6815266601 (this page in markdown: same URL + `.md`)
- Developer: [Calypso Instruments](https://appshunter.io/developer/928168289)
- Category: Sports, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 20 MB
- Languages: American English, European Spanish
- Released: 2026-10-13
- Data updated: 2026-10-25

## What is Calypso Ballistics?

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.

## Is Calypso Ballistics safe?

Not enough ratings yet to assess Calypso Ballistics.

## Is Calypso Ballistics legit?

Calypso Ballistics appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Calypso Ballistics is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 1.2.1 — 2026-10-22

Small update and bug fixes.

### 1.2.0 — 2026-10-20

• New look, matching the rest of the Calypso apps.
• Drift table: enter the drift at each distance from your ballistic solver or data book; the hold is interpolated at the target distance.
• "Copy for my solver": density altitude, pressure and temperature ready to paste into your ballistic solver.
• Step-by-step guide to placing the anemometer so its notch points at the target.
• Sensor offset for when the anemometer cannot be aligned with the line of fire.
• Demo mode in Settings › Sensor: simulated wind to try the app without a sensor.
• Works with the new generation of Calypso sensors: ULTRASONIC Mini with firmware 10.
• The dial labels the crosswind "CW" and shows the total wind.
• Better on iPad, including landscape.
• Fixed: the first Bluetooth search after installing could come up empty.
• Fixed: Export in the Logbook did nothing on iPad.
• The app is now in English and Spanish.

### 1.0 — 2026-10-13

No release notes.

## Apps similar to Calypso Ballistics

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| [SC Ballistics](https://appshunter.io/ios/app/sc-ballistics/id6753328945) | — | Free | Sports |
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## More apps by Calypso Instruments

- [AnemoTracker](https://appshunter.io/ios/app/anemotracker/id928168290)
- [Calypso Upgrader](https://appshunter.io/ios/app/calypso-upgrader/id1611011749)
- [Anemotracker Configurator](https://appshunter.io/ios/app/anemotracker-configurator/id6477843327)
- [CalypsoSpray](https://appshunter.io/ios/app/calypsospray/id6769805534)
- [CalypsoSailing](https://appshunter.io/ios/app/calypsosailing/id6801571633)

All apps by Calypso Instruments: https://appshunter.io/developer/928168289

## Related topics

[calypso instruments](https://appshunter.io/ios/topics/calypso-instruments)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-25.*