# The Sleep Diary vs SomniRx

The clearest difference is update cadence: SomniRx at every 3 weeks against The Sleep Diary's every 8 months. The Sleep Diary's advantage is iOS requirement (12.0 vs 16.4). 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.

The Sleep Diary ships an update every 8 months, SomniRx every 3 weeks. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | The Sleep Diary | SomniRx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (7 ratings)](https://appshunter.io/ios/app/the-sleep-diary/id1477788812/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 18 MB | 44 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Anne Richards](https://appshunter.io/developer/1477788811) | [Thomas Schott](https://appshunter.io/developer/1883724066) |

## What reviewers say

### The Sleep Diary

[App page](https://appshunter.io/ios/app/the-sleep-diary/id1477788812)

This app collects sleep-related symptoms and behaviors for research participants. Access is restricted to those enrolled in studies by Dr. Anne Richards at the San Francisco VA Medical Center, requiring a unique login. It offers daily assessments, a calendar for missed entries, and data summaries.

**Highlights:** Research study enrollment required, Daily sleep symptom assessments, Calendar for missed entries, Graphical data summaries, Customizable assessment reminders, Secure login with ID and password

**Features:** macOS Compatibility

**In-app purchases:** none


### SomniRx

[App page](https://appshunter.io/ios/app/somnirx/id6761053003)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is The Sleep Diary free?

The Sleep Diary is free to download, with no in-app purchases.

### Is SomniRx free?

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

### Do The Sleep Diary or SomniRx have ads?

Neither The Sleep Diary nor SomniRx shows ads.

### Which is updated more often, The Sleep Diary or SomniRx?

The Sleep Diary ships an update every 8 months, and SomniRx every 3 weeks. Most recently, The Sleep Diary was updated on October 24, 2026 and SomniRx on October 11, 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.*