# SleepViz vs Squirrel

The clearest difference is rating: Squirrel at 5.0 against SleepViz's 1.0. Squirrel also leads on ratings volume (4 vs 1). SleepViz's advantage is update cadence (every 9 days vs monthly). 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.

Squirrel holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

SleepViz ships an update every 9 days, Squirrel monthly. Both last shipped on October 31, 2026.

## The numbers

| Metric | SleepViz | Squirrel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/sleepviz-sleep-recorder/id6761079940/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/squirrel-adhd-second-brain/id6770824956/reviews)** |
| Number of ratings | 1 | **4** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Monthly |
| Monetization | Free | Free |
| Size | 54 MB | 12 MB |
| Requires iOS | **16.1** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [younesse el kars](https://appshunter.io/developer/1881175320) | [Jaganathan Konar](https://appshunter.io/developer/1896388373) |

## What reviewers say

### SleepViz

[App page](https://appshunter.io/ios/app/sleepviz-sleep-recorder/id6761079940)

Transform your iPhone into a personal sleep lab. Record your sleep, detect snoring with audio clips, and view detailed sleep stages and vital signs. All your data stays private on your device, completely free.

**Highlights:** Sleep Score (0-100), Snore detection with audio clips, Sleep stages from Apple Health, Heart rate and SpO2 tracking, Sleep trends and insights, Offline functionality, Private data storage

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

**In-app purchases:** none


### Squirrel

[App page](https://appshunter.io/ios/app/squirrel-adhd-second-brain/id6770824956)

This app helps individuals with ADHD capture thoughts, manage tasks, and track time effectively. It offers voice notes with transcription, automatic to-do creation from ideas, and visual time management tools. Designed to work with ADHD brains, it aims to reduce overwhelm and improve daily organization.

**Highlights:** Voice notes with instant transcription, Automatic to-do creation from thoughts, Visual time management with countdowns, Body-doubling focus mode, Habit tracking with streaks, Calendar sync for reminders

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SleepViz free?

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

### Is Squirrel free?

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

### Which has better reviews, SleepViz or Squirrel?

Squirrel is rated higher. SleepViz averages 1.0 out of 5 from 1 ratings, while Squirrel averages 5.0 from 4 ratings.

### Do SleepViz or Squirrel have ads?

Neither SleepViz nor Squirrel shows ads.

### Which is updated more often, SleepViz or Squirrel?

SleepViz ships an update every 9 days, and Squirrel monthly. Most recently, SleepViz was updated on October 31, 2026 and Squirrel on October 31, 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.*