# ReadSync vs Cork

The clearest difference is iOS requirement: Cork at 16.0 against ReadSync's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. ReadSync sells 1 one-off in-app purchase and Cork sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReadSync ships an update every 3 weeks, Cork monthly. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | ReadSync | Cork |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 4 MB | 28 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, Apple Watch |
| Age rating | +4 | 4+ |
| Developer | [Alper Albayrak](https://appshunter.io/developer/993200227) | [Alexander Nikonov22270669431](https://appshunter.io/developer/1807233440) |

## 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 |


### Cork

[App page](https://appshunter.io/ios/app/cork-family-pinboard/id6762112477)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $0.99 | per 7 days |
| Monthly | $3.99 | per month |
| Annual | $24.99 | per year |


## Frequently asked questions

### Is ReadSync free?

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

### Is Cork free?

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

### Do ReadSync or Cork have ads?

Neither ReadSync nor Cork shows ads.

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

ReadSync ships an update every 3 weeks, and Cork monthly. Most recently, ReadSync was updated on November 8, 2026 and Cork on November 5, 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.*