# Beiwe2 vs mEMA

The clearest difference is review sentiment: Beiwe2 at 17% against mEMA's 0%. mEMA's advantage is iOS requirement (13.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Beiwe2 ships an update every 5 weeks, mEMA monthly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Beiwe2 | mEMA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.3 (6 ratings)](https://appshunter.io/ios/app/mema-sense/id1457623580/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | **16.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free | Free |
| Size | 39 MB | 72 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Onnela Lab LLC](https://appshunter.io/developer/1120224929) | [Tefsoft, Inc](https://appshunter.io/developer/593566669) |

## What reviewers say

### Beiwe2

[App page](https://appshunter.io/ios/app/beiwe2/id1312962738)

This app is part of a research platform for participants in clinical and non-clinical studies. It collects sensor, usage, and survey data for research purposes. Access requires an invitation and credentials from a Beiwe server.

**Highlights:** Research-quality sensor data collection, Participant usage tracking, Survey data collection, Encrypted data storage, Reproducible studies, Participant management

**In-app purchases:** none


### mEMA

[App page](https://appshunter.io/ios/app/mema-sense/id1457623580)

This application enables clinicians and researchers to conduct mobile Ecological Momentary Assessments for studies and interventions. It captures self-report data and offers timely feedback to participants, all while ensuring participant anonymity through randomly generated codes.

**Highlights:** Mobile Ecological Momentary Assessments, Self-report data capture, Timely feedback to participants, Anonymous data collection, Random code generation for participant identification, Secure clinician/researcher access

**In-app purchases:** none


## Frequently asked questions

### Is Beiwe2 free?

Beiwe2 is free to download, with no in-app purchases.

### Is mEMA free?

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

### Do Beiwe2 or mEMA have ads?

Neither Beiwe2 nor mEMA shows ads.

### Which is updated more often, Beiwe2 or mEMA?

Beiwe2 ships an update every 5 weeks, and mEMA monthly. Most recently, Beiwe2 was updated on October 29, 2026 and mEMA on October 24, 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.*