# ReadSync vs Rostivio

The clearest difference is update cadence: Rostivio at every 3 days against ReadSync's every 3 weeks. Rostivio also leads on iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ReadSync sells 1 one-off in-app purchase and Rostivio sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReadSync ships an update every 3 weeks, Rostivio every 3 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ReadSync | Rostivio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 4 MB | 92 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Alper Albayrak](https://appshunter.io/developer/993200227) | [广君 丁](https://appshunter.io/developer/1506217938) |

## What reviewers say

### ReadSync

[App page](https://appshunter.io/ios/app/readsync-pdf-reader/id6761561640)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro | $7.99 | one-time |


### Rostivio

[App page](https://appshunter.io/ios/app/rostivio-shift-and-work-hours/id6810204869)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rostivio Pro Monthly | $2.99 | per month |
| Rostivio Pro Annual | $14.99 | per year |
| Rostivio Pro Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is ReadSync free?

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

### Is Rostivio free?

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

### Do ReadSync or Rostivio have ads?

Neither ReadSync nor Rostivio shows ads.

### Which is updated more often, ReadSync or Rostivio?

ReadSync ships an update every 3 weeks, and Rostivio every 3 days. Most recently, ReadSync was updated on October 25, 2026 and Rostivio on October 24, 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.*