# G vs Ka

The clearest difference is in-app purchases: Ka at none against G's 2. G's advantage is update cadence (every 4 days vs every 2 months) and device support (4 vs 2). On price and ads there is nothing between them.

Both are free to download. G sells 2 one-off in-app purchases. Ka asks for nothing beyond the download.

G ships an update every 4 days, Ka every 2 months. The most recent releases landed on July 4, 2026 and May 18, 2026 respectively.

## The numbers

| Metric | G | Ka |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (7 ratings)](https://appshunter.io/ios/app/g-field-recorder/id1154585693/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 30 MB |
| Requires iOS | **14.7** | 16.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Stratos Perception, LLC](https://appshunter.io/developer/721934057) | [Ka-ching ApS](https://appshunter.io/developer/1474762453) |

## What reviewers say

### G

[App page](https://appshunter.io/ios/app/g-field-recorder/id1154585693)

This app records and analyzes motion data from your device's sensors, including acceleration, rotation, and GPS information. It's designed for experiments, performance analysis, and tracking various movements. Data can be exported in CSV format and is resistant to loss.

**Highlights:** Logs and plots motion data (acceleration, rotation), Records ground speed, altitude, distance, and displacement, Virtually unlimited recording time, Programmable data acquisition control, Remote control via Apple Watch, Configurable acceleration reference frame, Export data in CSV format

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Multi-Plot | $0.99 | one-time |
| Professional | $3.99 | one-time |


### Ka

[App page](https://appshunter.io/ios/app/ka-ching-secondscreen/id1474762949)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is G free?

G is free to download, with in-app purchases available.

### Is Ka free?

Ka is free to download, with no in-app purchases.

### Do G or Ka have ads?

Neither G nor Ka shows ads.

### Which is updated more often, G or Ka?

G ships an update every 4 days, and Ka every 2 months. Most recently, G was updated on July 4, 2026 and Ka on May 18, 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.*