# ExpiWell vs Beiwe2

The clearest difference is update cadence: ExpiWell at every 4 days against Beiwe2's every 5 weeks. ExpiWell also leads on review sentiment (41% vs 17%). 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 ships an update every 4 days, Beiwe2 every 5 weeks. The most recent releases landed on September 25, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | ExpiWell | Beiwe2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (1.4K ratings)](https://appshunter.io/ios/app/expiwell/id1070733440/reviews)** | — |
| Number of ratings | **1.4K** | — |
| Positive reviews | **40.7% of reviews** | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 72 MB | 43 MB |
| Requires iOS | **12.4** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Expiwell, Inc.](https://appshunter.io/developer/1070733439) | [Onnela Lab LLC](https://appshunter.io/developer/1120224929) |

## 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, Apple Wallet, 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


### 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


## Frequently asked questions

### Is ExpiWell free?

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

### Is Beiwe2 free?

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

### Do ExpiWell or Beiwe2 have ads?

Neither ExpiWell nor Beiwe2 shows ads.

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

ExpiWell ships an update every 4 days, and Beiwe2 every 5 weeks. Most recently, ExpiWell was updated on September 25, 2026 and Beiwe2 on September 15, 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.*