# moment_e vs Happy Brain

The clearest difference is update cadence: Happy Brain at every 2 days against moment_e's monthly. 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.

moment_e ships an update monthly, Happy Brain every 2 days. The most recent releases landed on October 11, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | moment_e | Happy Brain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/moment-e/id1529479809/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Free | — |
| Size | 74 MB | 3 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Nader Amir](https://appshunter.io/developer/813330439) | [SHELTER TECHNOLOGY PRIVATE LIMITED](https://appshunter.io/developer/1894678724) |

## What reviewers say

### moment_e

[App page](https://appshunter.io/ios/app/moment-e/id1529479809)

This app facilitates ecological momentary assessments for research studies, collecting daily data on mood and cognition fluctuations. Users participate in questionnaires and watch videos for a set period, contributing to scientific advancement.

**Highlights:** Ecological Momentary Assessment (EMA), Daily questionnaires, Video content, Mood and cognition tracking, Research data collection, Long-term functional access

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

**In-app purchases:** none


### Happy Brain

[App page](https://appshunter.io/ios/app/happy-brain/id6762560948)

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

**In-app purchases:** none


## Frequently asked questions

### Is moment_e free?

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

### Is Happy Brain free?

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

### Do moment_e or Happy Brain have ads?

Neither moment_e nor Happy Brain shows ads.

### Which is updated more often, moment_e or Happy Brain?

moment_e ships an update monthly, and Happy Brain every 2 days. Most recently, moment_e was updated on October 11, 2026 and Happy Brain on October 6, 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.*