# 3E Smartphone Substudy vs m

The clearest difference is update cadence: 3E Smartphone Substudy at every 3 weeks against m's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

3E Smartphone Substudy ships an update every 3 weeks, m every 2 months. The most recent releases landed on September 18, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | 3E Smartphone Substudy | m |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (6 ratings)](https://appshunter.io/ios/app/m-path-sense/id6520394129/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | — | Free |
| Size | 50 MB | 110 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Avicenna Research Inc.](https://appshunter.io/developer/1137173051) | [m-Path Software](https://appshunter.io/developer/1727937748) |

## What reviewers say

### 3E Smartphone Substudy

[App page](https://appshunter.io/ios/app/3e-smartphone-substudy/id6465963006)

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

**In-app purchases:** none


### m

[App page](https://appshunter.io/ios/app/m-path-sense/id6520394129)

This application collects data through questionnaires and device sensors to provide a comprehensive view of user responses and context. It allows administrators to set up data collection schedules and protocols for participants.

**Highlights:** Questionnaire-based data collection, Sensor data integration (location, movement, steps), Scheduled data collection protocols, Administrator-defined settings, Detailed user data profiling

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

**In-app purchases:** none


## Frequently asked questions

### Is 3E Smartphone Substudy free?

3E Smartphone Substudy is free to download, with no in-app purchases.

### Is m free?

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

### Do 3E Smartphone Substudy or m have ads?

Neither 3E Smartphone Substudy nor m shows ads.

### Which is updated more often, 3E Smartphone Substudy or m?

3E Smartphone Substudy ships an update every 3 weeks, and m every 2 months. Most recently, 3E Smartphone Substudy was updated on September 18, 2026 and m on September 13, 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.*