# Circadian Blueprint vs CogniTrack

The clearest difference is in-app purchases: Circadian Blueprint at none against CogniTrack's 2. Circadian Blueprint also leads on device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. CogniTrack sells 2 in-app purchases, starting at $0.99 per month. Circadian Blueprint asks for nothing beyond the download.

## The numbers

| Metric | Circadian Blueprint | CogniTrack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/circadian-blueprint/id6775229082/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 10 days |
| Monetization | Free | — |
| Size | 25 MB | 4 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Matthew Parman862212051](https://appshunter.io/developer/6775229084) | [Maik Friedel](https://appshunter.io/developer/1477467157) |

## What reviewers say

### Circadian Blueprint

[App page](https://appshunter.io/ios/app/circadian-blueprint/id6775229082)

Align your body's natural clock with light cues to improve sleep and energy. This app automatically adjusts to your location and the sun's cycle, helping you wake with sunrise, protect evenings from blue light, and track light exposure.

**Highlights:** Wake with sunrise alarms, Evening blue light protection reminders, Track light exposure and score brightness, Hands-free light tracking, Daily habit check-in and consistency tracking, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### CogniTrack

[App page](https://appshunter.io/ios/app/cognitrack/id6780935354)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CogniTrack Pro (Monthly) | $0.99 | per month |
| CogniTrack Pro (Lifetime) | $9.99 | one-time |


## Frequently asked questions

### Is Circadian Blueprint free?

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

### Is CogniTrack free?

CogniTrack is free to download, with in-app purchases available.

### Do Circadian Blueprint or CogniTrack have ads?

Neither Circadian Blueprint nor CogniTrack shows ads.

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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.*