# fourf vs rtn

The clearest difference is update cadence: fourf at every 5 days against rtn's every 5 months. fourf also leads on iOS requirement (17.4 vs 27.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

fourf ships an update every 5 days, rtn every 5 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | fourf | rtn |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 5 months |
| Monetization | Free | Free |
| Size | 5 MB | 3 MB |
| Requires iOS | **17.4** | 27.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | +4 |
| Developer | [Salih Bora Ozturk](https://appshunter.io/developer/1729658833) | [Caio Agra Lemos](https://appshunter.io/developer/1749628522) |

## What reviewers say

### fourf

[App page](https://appshunter.io/ios/app/fourf/id6503328526)

Capture thoughts, memories, and routines effortlessly with this journaling app. Its chat-like interface and social features allow for shared memories and easy organization across devices. Build a consistent habit with reminders and customizable appearance.

**Highlights:** Chat-like journaling interface, Mention friends for shared memories, Single-tap routine tracking, Effortless organization and search, Multi-device compatibility, Customizable appearance, Journaling habit reminders

**Features:** macOS Compatibility

**In-app purchases:** none


### rtn

[App page](https://appshunter.io/ios/app/rtn-habit-tracker-and-routines/id6604054997)

This app helps you achieve your goals by creating personalized daily and weekly routines. It suggests habits, tracks your progress with streaks, and syncs across your Apple devices, including your Apple Watch. The AI runs privately on Apple's cloud, respecting your data privacy.

**Highlights:** AI-generated daily and weekly routines, Customizable habit scheduling, Streak tracking for habits and routines, Home screen widget for streaks, iCloud sync across iPhone, iPad, and Apple Watch, Privacy-focused AI processing

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is fourf free?

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

### Is rtn free?

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

### Do fourf or rtn have ads?

Neither fourf nor rtn shows ads.

### Which is updated more often, fourf or rtn?

fourf ships an update every 5 days, and rtn every 5 months. Most recently, fourf was updated on October 30, 2026 and rtn on October 30, 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.*