# My Circadian vs AISCA

The clearest difference is in-app purchases: My Circadian at none against AISCA's 3. AISCA's advantage is update cadence (every 5 days vs every 3 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. AISCA sells 3 in-app purchases, starting at $5.99 per 3 months. My Circadian asks for nothing beyond the download.

My Circadian ships an update every 3 months, AISCA every 5 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | My Circadian | AISCA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/my-circadian/id6450283379/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 1 MB | 51 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [Jake Adams](https://appshunter.io/developer/1692659630) | [Trecent Systems](https://appshunter.io/developer/1765100723) |

## What reviewers say

### My Circadian

[App page](https://appshunter.io/ios/app/my-circadian/id6450283379)

Optimize your light exposure and sleep schedule for better circadian health. This tool provides personalized intervals to help you maintain a regular sleep-wake cycle and manage light exposure, crucial for overall well-being.

**Highlights:** Personalized light exposure intervals, Optimized sleep schedule guidance, Circadian rhythm tracking, Actionable health insights, Regular sleep-wake cycle management

**Features:** macOS Compatibility

**In-app purchases:** none


### AISCA

[App page](https://appshunter.io/ios/app/aisca/id6762643334)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Months | $5.99 | per 3 months |
| 6 Months | $7.99 | per 6 months |
| 1 Year | $12.99 | per year |


## Frequently asked questions

### Is My Circadian free?

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

### Is AISCA free?

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

### Do My Circadian or AISCA have ads?

Neither My Circadian nor AISCA shows ads.

### Which is updated more often, My Circadian or AISCA?

My Circadian ships an update every 3 months, and AISCA every 5 days. Most recently, My Circadian was updated on October 24, 2026 and AISCA on October 25, 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.*