# Sensor Logger vs Mtf License

The clearest difference is in-app purchases: Mtf License at none against Sensor Logger's 6. Mtf License also leads on iOS requirement (12.0 vs 16.4). Sensor Logger's advantage is update cadence (weekly vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Sensor Logger sells 6 in-app purchases, starting at $4.99 per month. Mtf License asks for nothing beyond the download.

Sensor Logger ships an update weekly, Mtf License every 3 weeks. The most recent releases landed on October 15, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Sensor Logger | Mtf License |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (112 ratings)](https://appshunter.io/ios/app/sensor-logger/id1531582925/reviews)** | — |
| Number of ratings | **112** | — |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 81 MB | 45 MB |
| Requires iOS | 16.4 | **12.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Logger Labs LTD](https://appshunter.io/developer/1531583287) | [Okkar Thet Naing](https://appshunter.io/developer/1664317631) |

## What reviewers say

### Sensor Logger

[App page](https://appshunter.io/ios/app/sensor-logger/id1531582925)

This app collects and displays data from various device sensors, including motion, GPS, and audio. It offers background recording, interactive plots, and multiple export formats. Advanced features allow for data streaming, systematic data collection from other users, and creating shareable data-driven dashboards.

**Highlights:** One-tap logging, Background recording, Interactive plot visualization, Data streaming (HTTP/MQTT), CSV, JSON, Excel, KML exports, Create and share data dashboards, Systematic data collection studies

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $4.99 | per month |
| Pro Monthly | $9.99 | per month |
| Ultimate Monthly | $24.99 | per month |
| Plus Yearly | $49.99 | per year |
| Pro Yearly | $99.99 | per year |
| Ultimate Yearly | $249.99 | per year |


### Mtf License

[App page](https://appshunter.io/ios/app/mtf-license/id6472442875)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sensor Logger free?

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

### Is Mtf License free?

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

### Do Sensor Logger or Mtf License have ads?

Neither Sensor Logger nor Mtf License shows ads.

### Which is updated more often, Sensor Logger or Mtf License?

Sensor Logger ships an update weekly, and Mtf License every 3 weeks. Most recently, Sensor Logger was updated on October 15, 2026 and Mtf License on October 3, 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.*