# Caffeine Flow vs cafein

The clearest difference is in-app purchases: Caffeine Flow at none against cafein's 1. cafein's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. cafein sells 1 in-app purchase, starting at $24.99 per year. Caffeine Flow asks for nothing beyond the download.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on September 25, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Caffeine Flow | cafein |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | Fortnightly |
| Size | 86 MB | 46 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chinipy](https://appshunter.io/developer/1829955713) | [Theorics Limited](https://appshunter.io/developer/1790044061) |

## What reviewers say

### Caffeine Flow

[App page](https://appshunter.io/ios/app/caffeine-flow-sleep-tracker/id6759970536)

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

**In-app purchases:** none


### cafein

[App page](https://appshunter.io/ios/app/cafein-fun-coffee-tracker/id6766194334)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cafein Pro | $24.99 | per year |


## Frequently asked questions

### Is Caffeine Flow free?

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

### Is cafein free?

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

### Do Caffeine Flow or cafein have ads?

Caffeine Flow shows ads; cafein does not.

### Which is updated more often, Caffeine Flow or cafein?

Caffeine Flow ships an update fortnightly, and cafein fortnightly. Most recently, Caffeine Flow was updated on September 25, 2026 and cafein on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*