# Sleep Debt Tracker Calculator vs Aftershift

The clearest difference is update cadence: Aftershift at weekly against Sleep Debt Tracker Calculator's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sleep Debt Tracker Calculator sells 3 in-app purchases, starting at $5.99 per 7 days and Aftershift sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Sleep Debt Tracker Calculator ships an update every 3 weeks, Aftershift weekly. The most recent releases landed on November 5, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Sleep Debt Tracker Calculator | Aftershift |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 5 MB | 8 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Phuc Pham](https://appshunter.io/developer/1893081423) | [JIYULMOM](https://appshunter.io/developer/379186743) |

## What reviewers say

### Sleep Debt Tracker Calculator

[App page](https://appshunter.io/ios/app/sleep-debt-tracker-calculator/id6771320331)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $5.99 | per 7 days |
| Yearly | $29.99 | per year |
| Lifetime Pro | $59.99 | one-time |


### Aftershift

[App page](https://appshunter.io/ios/app/aftershift-recovery-routine/id6780366541)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Aftershift Pro | $2.99 | per month |
| Aftershift Pro | $19.99 | per year |


## Frequently asked questions

### Is Sleep Debt Tracker Calculator free?

Sleep Debt Tracker Calculator is free to download, with in-app purchases available.

### Is Aftershift free?

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

### Do Sleep Debt Tracker Calculator or Aftershift have ads?

Neither Sleep Debt Tracker Calculator nor Aftershift shows ads.

### Which is updated more often, Sleep Debt Tracker Calculator or Aftershift?

Sleep Debt Tracker Calculator ships an update every 3 weeks, and Aftershift weekly. Most recently, Sleep Debt Tracker Calculator was updated on November 5, 2026 and Aftershift on November 7, 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.*