# SensorLog vs Mentra

The clearest difference is price: Mentra at Free against SensorLog's $2.99. Mentra also leads on in-app purchases (none vs 4) and update cadence (every 2 weeks vs every 2 months). SensorLog's advantage is rating (4.4 vs 3.7) and review sentiment (69% vs 53%). On ratings volume, ads and device support there is nothing between them.

Mentra is free to download; SensorLog costs $2.99 up front. SensorLog sells 4 one-off in-app purchases. Mentra asks for nothing beyond the download.

SensorLog holds the better App Store score, 4.4 against 3.7. Both are backed by a comparable volume of ratings — 41 and 35 respectively. Written reviews point the same way: 69% of SensorLog's written reviews are positive against 53% of Mentra's.

SensorLog ships an update every 2 months, Mentra every 2 weeks. The most recent releases landed on October 22, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | SensorLog | Mentra |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.4 (41 ratings)](https://appshunter.io/ios/app/sensorlog/id388014573/reviews)** | [3.7 (35 ratings)](https://appshunter.io/ios/app/mentra-the-smart-glasses-app/id6747363193/reviews) |
| Number of ratings | **41** | 35 |
| Positive reviews | **69.0% of reviews** | 52.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 4 MB | 267 MB |
| Requires iOS | 18.0 | **15.5** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Bernd Thomas](https://appshunter.io/developer/385441510) | [Mentra](https://appshunter.io/developer/1813813646) |

## What reviewers say

### SensorLog

[App page](https://appshunter.io/ios/app/sensorlog/id388014573)

Record and stream sensor data from your iPhone, iPad, and Apple Watch. Export data in CSV or JSON format, or send it via TCP, UDP, or HTTP requests. Integrates with Core ML models for advanced analysis.

**Highlights:** Log sensor data up to 100Hz, Stream data via TCP/UDP or HTTP, Export data as CSV or JSON, Remote client/server functionality, Siri and Shortcuts integration, Core ML model support, HealthKit data export from Apple Watch

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a Coffee ... | $0.99 | one-time |
| Spend me an Ice Cream ... | $1.99 | one-time |
| Offer me a glas of Wine ... | $5.99 | one-time |
| Invite me for a Cocktail ... | $9.99 | one-time |


### Mentra

[App page](https://appshunter.io/ios/app/mentra-the-smart-glasses-app/id6747363193)

Discover and run a variety of applications designed for smart glasses. This platform provides access to mini apps for AI assistance, live captions, streaming, language learning, and more, enhancing your smart glasses experience.

**Highlights:** Access to global developer apps, Live captions for accessibility, Hands-free photo capture, AI-powered assistance, Livestream your point-of-view, Language learning tools, On-demand teleprompter

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SensorLog free?

SensorLog costs $2.99, and also offers in-app purchases.

### Is Mentra free?

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

### Which has better reviews, SensorLog or Mentra?

SensorLog is rated higher. SensorLog averages 4.4 out of 5 from 41 ratings, while Mentra averages 3.7 from 35 ratings.

### Do SensorLog or Mentra have ads?

Neither SensorLog nor Mentra shows ads.

### Which is updated more often, SensorLog or Mentra?

SensorLog ships an update every 2 months, and Mentra every 2 weeks. Most recently, SensorLog was updated on October 22, 2026 and Mentra on October 14, 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.*