# iReader Play vs IST+ for Mobile

The clearest difference is update cadence: iReader Play at every 6 weeks against IST+ for Mobile's every 8 months. On price, ads, in-app purchases and device support there is nothing between them.

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

iReader Play ships an update every 6 weeks, IST+ for Mobile every 8 months. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | iReader Play | IST+ for Mobile |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 8 months |
| Size | 27 MB | 5 MB |
| Requires iOS | 9.0 | 9.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GoTrustID Inc.](https://appshunter.io/developer/1434392538) | [Information Security Technology Corporation](https://appshunter.io/developer/1650535441) |

## What reviewers say

### iReader Play

[App page](https://appshunter.io/ios/app/ireader-play/id1106384442)

**In-app purchases:** none


### IST+ for Mobile

[App page](https://appshunter.io/ios/app/ist-plus-for-mobile/id6444602007)

**In-app purchases:** none


## Frequently asked questions

### Is iReader Play free?

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

### Is IST+ for Mobile free?

IST+ for Mobile is free to download, with no in-app purchases.

### Do iReader Play or IST+ for Mobile have ads?

Neither iReader Play nor IST+ for Mobile shows ads.

### Which is updated more often, iReader Play or IST+ for Mobile?

iReader Play ships an update every 6 weeks, and IST+ for Mobile every 8 months. Most recently, iReader Play was updated on October 26, 2026 and IST+ for Mobile on November 3, 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.*