# Sensor Logger vs x

The clearest difference is in-app purchases: x at none against Sensor Logger's 6. x also leads on iOS requirement (12.0 vs 16.4). Sensor Logger's advantage is update cadence (weekly vs every 5 months). 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. x asks for nothing beyond the download.

Sensor Logger ships an update weekly, x every 5 months. The most recent releases landed on September 23, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Sensor Logger | x |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (111 ratings)](https://appshunter.io/ios/app/sensor-logger/id1531582925/reviews)** | — |
| Number of ratings | **111** | — |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 81 MB | 32 MB |
| Requires iOS | 16.4 | **12.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Choi Tsz Hei](https://appshunter.io/developer/1531583287) | [x-io Technologies Limited](https://appshunter.io/developer/1748110716) |

## 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 |


### x

[App page](https://appshunter.io/ios/app/x-imu3/id6503147797)

**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 x free?

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

### Do Sensor Logger or x have ads?

Neither Sensor Logger nor x shows ads.

### Which is updated more often, Sensor Logger or x?

Sensor Logger ships an update weekly, and x every 5 months. Most recently, Sensor Logger was updated on September 23, 2026 and x on September 9, 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.*