# Predy vs rotate by RotationOS

The clearest difference is ads: rotate by RotationOS at none against Predy's shown. Predy's advantage is update cadence (every 2 days vs every 5 days) and device support (3 vs 1). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Predy sells 3 in-app purchases, starting at $4.39 per month and rotate by RotationOS sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Predy ships an update every 2 days, rotate by RotationOS every 5 days. The most recent releases landed on October 7, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Predy | rotate by RotationOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/predy-study-trackerpomodoro/id6749900495/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 5 days |
| Monetization | Free with in-app purchases | — |
| Size | 342 MB | 47 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [GO SHIMIZU](https://appshunter.io/developer/1767583096) | [RotationOS LLC](https://appshunter.io/developer/6795548528) |

## What reviewers say

### Predy

[App page](https://appshunter.io/ios/app/predy-study-trackerpomodoro/id6749900495)

This app helps you overcome procrastination and build consistent work habits. It focuses on making starting easy, keeping motivation high, and visualizing your progress. Designed for those who struggle with task management, it turns effort into visible achievement.

**Highlights:** Project-based task management, Work tracking with timers and Pomodoro, StudyWithMe focus mode, AutoPilot for easy task initiation, Streak bonuses and productivity rankings, Progress analytics and prediction training, Goal estimation and feedback

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Predy Premium | $4.39 | per month |
| Predy Premium | $36.49 | per year |
| Predy | $53.99 | one-time |


### rotate by RotationOS

[App page](https://appshunter.io/ios/app/rotate-by-rotationos/id6795548526)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| rotate Plus | $2.99 | per month |
| rotate Pro | $5.99 | per month |


## Frequently asked questions

### Is Predy free?

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

### Is rotate by RotationOS free?

rotate by RotationOS is free to download, with in-app purchases available.

### Do Predy or rotate by RotationOS have ads?

Predy shows ads; rotate by RotationOS does not.

### Which is updated more often, Predy or rotate by RotationOS?

Predy ships an update every 2 days, and rotate by RotationOS every 5 days. Most recently, Predy was updated on October 7, 2026 and rotate by RotationOS on October 22, 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.*