# Precision Rifle Timer vs Calypso Ballistics

The clearest difference is in-app purchases: Calypso Ballistics at none against Precision Rifle Timer's 3. Calypso Ballistics also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Precision Rifle Timer sells 3 in-app purchases, starting at $4.99 per month. Calypso Ballistics asks for nothing beyond the download.

Precision Rifle Timer ships an update weekly, Calypso Ballistics every 5 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Precision Rifle Timer | Calypso Ballistics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/precision-rifle-timer/id6764681904/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Subscription | — |
| Size | 4 MB | 20 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Clay Blackketter](https://appshunter.io/developer/1741969388) | [Calypso Instruments](https://appshunter.io/developer/928168289) |

## What reviewers say

### Precision Rifle Timer

[App page](https://appshunter.io/ios/app/precision-rifle-timer/id6764681904)

This shooting timer app for Apple Watch and iPhone provides spoken interval announcements and a shake-to-start feature. It's designed for precision rifle shooters and timed drills, offering background audio and session history saved to Apple Health.

**Highlights:** Spoken interval announcements, Background audio playback, Shake-to-start functionality, Final-second countdown, Live heart-rate and calorie display, Session history saved to Apple Health, Quick-start presets

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly Subscription | $49.99 | per year |
| Lifetime Access | $149.99 | one-time |


### Calypso Ballistics

[App page](https://appshunter.io/ios/app/calypso-ballistics/id6815266601)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Precision Rifle Timer free?

Precision Rifle Timer 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 Precision Rifle Timer or Calypso Ballistics have ads?

Neither Precision Rifle Timer nor Calypso Ballistics shows ads.

### Which is updated more often, Precision Rifle Timer or Calypso Ballistics?

Precision Rifle Timer ships an update weekly, and Calypso Ballistics every 5 days. Most recently, Precision Rifle Timer was updated on October 24, 2026 and Calypso Ballistics on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*