# Caldwell Precision Chronograph

> Connects Caldwell Ballistic Chronographs to iOS devices for shot data recording. (iPhone/iPad app by Battenfeld Technologies Inc.)

- Source: https://appshunter.io/ios/app/caldwell-precision-chronograph/id659981375 (this page in markdown: same URL + `.md`)
- Developer: [Battenfeld Technologies Inc](https://appshunter.io/developer/669043365)
- Category: Sports, Utilities
- Price: Free
- Rating: 2.30/5 from 191 App Store ratings · 118 written reviews indexed
- Age rating: 17+
- Requires: iOS 11.0 · 7 MB
- Languages: American English
- Released: 2013-06-17
- Data updated: 2026-08-24
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/caldwell-precision-chronograph/id659981375/reviews.md

## What is Caldwell Precision Chronograph?

The Ballistic Chronograph app is for use with the Caldwell line of Ballistic Chronographs supporting a 3.5mm line-out serial port.

Users running iOS 7 or greater

• When prompted “Caldwell Ballistic Precision Chronograph” Would Like to Access the Microphone - select OK.
• Please ensure that Settings -> Privacy -> Microphone -> Caldwell Ballistic Precision Chronometer is enabled (Access Granted). 

Running the app with the setting disabled will result in no shots being seen even though the app is showing it as connected.

Users running version 1.14 or greater

• When prompted “Caldwell Ballistic Precision Chronograph” Would Like to Access the Camera - select OK.
• When prompted “Caldwell Ballistic Precision Chronograph” Would Like to Access Photos - select OK.
• Please ensure that Settings -> Caldwell Ballistic Precision Chronometer -> Camera is enabled (Access Granted).

Chrono G2 users running 1.17 or greater

To enable Bluetooth in the app. In the Chrono Settings - set Bluetooth enabled. If prompted - Turn on Bluetooth to Allow "Caldwell Ballistic Precision Chronograph" to Connect to Accessories. Select Settings. Turn on Bluetooth.

If prompted - Bluetooth is not enabled. Enable Bluetooth to continue. In Settings - Turn on Bluetooth.

## Key features

- Connects via serial port
- Connects via Bluetooth (Chrono G2)
- Records shot data
- Displays shot data
- Requires microphone access
- Requires camera access

## What do users think of Caldwell Precision Chronograph?

Overall sentiment: negative

**Pros**

- ⭐ Works great
- ⭐ Chronograph functions well
- ⭐ Useful features

**Cons**

- 🐛 Compatibility issues with newer iOS versions
- 🐛 App crashes or doesn't open
- 🐛 Connectivity problems with Bluetooth and wired connections
- 🐛 Data loss after app updates
- 🐛 Buggy and unreliable performance

**Commonly reported bugs**

- Doesn't work on iPhone 7 and newer
- Crashes on iOS 16 update
- Bluetooth and wired connections not reliable
- Weather data not working
- App freezes or closes unexpectedly

**Most requested features**

- Export data to CSV
- Sync data across devices
- Improve bullet/load data management
- Add more weather/environmental data tracking

## Recent user reviews (10 of 118)

All indexed reviews: https://appshunter.io/ios/app/caldwell-precision-chronograph/id659981375/reviews.md

### 1/5 — App Doesn’t Connect iOS

*2026-07-03, version 1.21*

I don’t often use my Caldwell chronograph while shooting. However, I have never once yet successfully connected the App with the chronograph for the many years I have owned it now. Despite having all settings “enabled” along with Bluetooth enabled. 
Caldwell clearly doesn’t care or support their product either by the lack of effort and numerous negative feedback.

### 1/5 — Does not connect to IOS 16.

*2026-03-31, version 1.21*

I am unable to connect my chronograph to my phone through the app. Even with all of the correct settings.

### 2/5 — Doesn’t work on iPad

*2025-09-07, version 1.21*

App works okay on my iPhone. A little clunky but works well enough. Installed on my iPad and it does not connect to Bluetooth. App settings does not show Bluetooth permissions, only microphone. Needs update for it to work properly with iPads.

### 1/5 — Could’ve been great

*2025-06-19, version 1.21*

No way to stop and then restart a string. You have to waste time waiting for your firearm to cool off before you can continue. As opposed to being able to shoot strings from several firearms during a session. No way to load your firearm/string information before hand.

### 1/5 — Not for. iOS

*2025-04-28, version 1.21*

Simply does not work with newer version of ios.

### 1/5 — Huge disappointment

*2025-03-23, version 1.21*

The app doesn’t connect via Bluetooth, nor does it work plugged into the chronograph, no point in downloading.

### 1/5 — Doesn’t work

*2025-02-25, version 1.21*

App won’t read any data from my chronograph at all, shows connection as green but doesn’t display the speed

### 1/5 — Needs updating

*2025-01-11, version 1.21*

Works with iPhone X, but not with the newer iPhones! I give the chronograph four star, works 90% of the time!

### 1/5 — Does not work with newer iPhone

*2024-06-05, version 1.21*

Worked with iPhone 7 after I bought lightning connector.  Finally got a chance to use it again and showed connected but occasionally said it was not connected to iPhone 13.  Seeing other reviews this has been an issue that devs refuse to fix. Had to use one shot at a time and record results.  Basically a chunk of plastic without all the data perks now.

### 1/5 — Does not work!!!!

*2024-04-13, version 1.21*

The physical chronograph itself works well, but the app doesn’t work at all even with the appropriate permissions allowed.  I can open the app and it acknowledges that a chronograph is connected, but the app won’t recognize or register a single shot despite the chronograph showing a speed reading.  Don’t waste your time!

## Frequently asked questions about Caldwell Precision Chronograph

### What does the Caldwell Ballistic Precision Chronograph app do?

The app connects to Caldwell Ballistic Chronographs, allowing users to record and display shot data. It facilitates the transfer of ballistic information from the chronograph to an iOS device.

### How does the app connect to the chronograph?

The app supports connections via a 3.5mm line-out serial port for older models. For Chrono G2 users, it also enables Bluetooth connectivity, which needs to be enabled within the app's settings.

### What permissions does the app require?

The app requires microphone access to function correctly. For version 1.14 and greater, it also needs camera and photo access. Bluetooth must be enabled for Chrono G2 models.

### Is this app compatible with all iOS versions?

Users need to be running iOS 7 or greater for basic functionality. Specific features, like Bluetooth, may require newer versions of the app (e.g., 1.17 or greater for Chrono G2 Bluetooth).

### What is the cost of this app?

This application is available for free. There are no in-app purchases or advertisements mentioned, indicating it is a complimentary tool for users of Caldwell chronographs.

## Version history (last 5 releases)

### 1.21 — 2022-11-01

Version 1.21 contains the following changes/updates:
• Dark mode fix.

### 1.20 — 2022-10-18

Version 1.20 contains the following changes/updates:
• General updates for iOS 16 compatibility.

### 1.18 — 2016-04-29

This app has been updated by Apple to display the Apple Watch app icon.

Version 1.18 contains the following changes/updates:
• Weather API updated. Weather conditions now provided by Weather Underground.
• Altitude (FT) text field added. Barometric pressure ASL returned if altitude is not 0.
• Grain to gram conversion applied to weight for muzzle energy in joules.
• Strike a Line now reads Strike a Line. (Line = 1IN).
• On Start - Stop button only becomes active after get conditions have completed.

### 1.17 — 2016-02-04

Version 1.17 contains the following changes/updates:
• Weather support updated for deprecated web service.

### 1.16 — 2016-01-15

Version 1.16 contains the following changes/updates:
    •    New Group Show more/less now persists between views.
    •    BLE behavior updated for Bluetooth Power On/Off.
    •    BLE behavior updated for iOS 8+.
    •    BLE support for Caldwell Chrono device name.
    •    MV ranges updated for G2.

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## More apps by Battenfeld Technologies Inc

- [Caldwell Target Camera](https://appshunter.io/ios/app/caldwell-target-camera/id1080846758)
- [Frankford Intellidropper](https://appshunter.io/ios/app/frankford-intellidropper/id1436712045)

All apps by Battenfeld Technologies Inc: https://appshunter.io/developer/669043365

## Related topics

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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 2026-08-24.*