# OffDays Alarm vs Caffeine Level Tracker & Calc

The clearest difference is update cadence: OffDays Alarm at every 10 days against Caffeine Level Tracker & Calc's every 2 months. Caffeine Level Tracker & Calc's advantage is iOS requirement (15.0 vs 26.0). 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.

OffDays Alarm ships an update every 10 days, Caffeine Level Tracker & Calc every 2 months. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | OffDays Alarm | Caffeine Level Tracker & Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 10 days** | Every 2 months |
| Size | 15 MB | 45 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sung Ahn Kim](https://appshunter.io/developer/1452083763) | [Seulki Eom](https://appshunter.io/developer/1718927408) |

## What reviewers say

### OffDays Alarm

[App page](https://appshunter.io/ios/app/offdays-alarm/id6762003987)

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

**In-app purchases:** none


### Caffeine Level Tracker & Calc

[App page](https://appshunter.io/ios/app/caffeine-level-tracker-and-calc/id6778823481)

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

**In-app purchases:** none


## Frequently asked questions

### Is OffDays Alarm free?

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

### Is Caffeine Level Tracker & Calc free?

Caffeine Level Tracker & Calc is free to download, with no in-app purchases.

### Do OffDays Alarm or Caffeine Level Tracker & Calc have ads?

Both OffDays Alarm and Caffeine Level Tracker & Calc show ads.

### Which is updated more often, OffDays Alarm or Caffeine Level Tracker & Calc?

OffDays Alarm ships an update every 10 days, and Caffeine Level Tracker & Calc every 2 months. Most recently, OffDays Alarm was updated on October 24, 2026 and Caffeine Level Tracker & Calc on October 13, 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.*