# ExpiWell vs mEMA10

The clearest difference is rating: ExpiWell at 4.6 against mEMA10's 3.0. ExpiWell also leads on review sentiment (39% vs 0%) and ratings volume (1.5K vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

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

ExpiWell holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: ExpiWell has 1.5K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 39% of ExpiWell's written reviews are positive against 0% of mEMA10's.

ExpiWell ships an update every 5 days, mEMA10 every 3 weeks. The most recent releases landed on October 18, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | ExpiWell | mEMA10 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (1.5K ratings)](https://appshunter.io/ios/app/expiwell/id1070733440/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/mema10/id6445919648/reviews) |
| Number of ratings | **1.5K** | 2 |
| Positive reviews | **39.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 36 MB | 95 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Expiwell, Inc.](https://appshunter.io/developer/1070733439) | [Tefsoft, Inc](https://appshunter.io/developer/593566669) |

## What reviewers say

### ExpiWell

[App page](https://appshunter.io/ios/app/expiwell/id1070733440)

This app facilitates experience sampling and ecological momentary assessment for research. It allows users to share opinions and experiences through surveys and daily diaries, ensuring data privacy. Researchers can collect valuable insights through this platform.

**Highlights:** Experience sampling method (ESM), Ecological momentary assessment (EMA), Surveys and mood tracking, Daily diary entries, Just-in-time adaptive interventions (JITAI), Digital ethnography

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

**In-app purchases:** none

**What reviewers like**

- 👍 Straightforward experience
- 🚀 Clean and easy to use
- 💡 Fascinating app

**What reviewers complain about**

- 🐛 Keeps signing users out
- 🐛 App shuts down
- 🐛 Slow performance
- 🐛 Frequent updates

**Reported bugs**

- Login issues
- Incompatibility with certain devices
- Crashing during surveys

**Requested features**

- Better notification system
- More seamless interface


### mEMA10

[App page](https://appshunter.io/ios/app/mema10/id6445919648)

This application serves as a platform for organizations to deploy ecological momentary assessments (EMAs). It delivers pop-up questionnaires and guides, often integrated with wearable device data, for research purposes. User participation requires study credentials and informed consent.

**Highlights:** Ecological Momentary Assessment (EMA) deployment, Pop-up questionnaires and guides, Integration with web-based services, Data streaming from Garmin watches, Configurable study packages, Informed consent management

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

**In-app purchases:** none


## Frequently asked questions

### Is ExpiWell free?

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

### Is mEMA10 free?

mEMA10 is free to download, with no in-app purchases.

### Which has better reviews, ExpiWell or mEMA10?

ExpiWell is rated higher. ExpiWell averages 4.6 out of 5 from 1.5K ratings, while mEMA10 averages 3.0 from 2 ratings.

### Do ExpiWell or mEMA10 have ads?

Neither ExpiWell nor mEMA10 shows ads.

### Which is updated more often, ExpiWell or mEMA10?

ExpiWell ships an update every 5 days, and mEMA10 every 3 weeks. Most recently, ExpiWell was updated on October 18, 2026 and mEMA10 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.*