# SO3 On vs SensorLogger

The clearest difference is price: SO3 On at Free against SensorLogger's $0.99. SO3 On also leads on iOS requirement (10.3 vs 16.0). SensorLogger's advantage is update cadence (every 3 weeks vs every 2 months). On ads, in-app purchases and device support there is nothing between them.

SO3 On is free to download; SensorLogger costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SO3 On ships an update every 2 months, SensorLogger every 3 weeks. The most recent releases landed on September 29, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | SO3 On | SensorLogger |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[4.5 (11 ratings)](https://appshunter.io/ios/app/sensorlogger-csv-export/id1505203547/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 78.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | — | Paid |
| Size | 66 MB | 2 MB |
| Requires iOS | **10.3** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [VESCON GmbH](https://appshunter.io/developer/1395283658) | [Kazumasa Wakamori](https://appshunter.io/developer/1505203546) |

## What reviewers say

### SO3 On

[App page](https://appshunter.io/ios/app/so3-on-site/id1395283659)

**Features:** macOS Compatibility

**In-app purchases:** none


### SensorLogger

[App page](https://appshunter.io/ios/app/sensorlogger-csv-export/id1505203547)

Record acceleration, gyroscope, and magnetic field data in real-time or at higher frequencies. Export your sensor readings as a CSV file for further analysis. Optimize data collection by toggling visualization settings.

**Highlights:** Log acceleration, gyroscope, and magnetic field, Synchronous sensor measurement, Real-time data visualization, Adjustable sampling frequency, Export data as CSV file

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SO3 On free?

SO3 On is free to download, with no in-app purchases.

### Is SensorLogger free?

SensorLogger costs $0.99, with no in-app purchases.

### Do SO3 On or SensorLogger have ads?

Neither SO3 On nor SensorLogger shows ads.

### Which is updated more often, SO3 On or SensorLogger?

SO3 On ships an update every 2 months, and SensorLogger every 3 weeks. Most recently, SO3 On was updated on September 29, 2026 and SensorLogger on October 12, 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.*