# WonderJack vs Fluency

The clearest difference is update cadence: Fluency at every 4 weeks against WonderJack's every 2 months. WonderJack's advantage is 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. Neither carries in-app purchases, so what you see is what you pay.

WonderJack ships an update every 2 months, Fluency every 4 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | WonderJack | Fluency |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Size | 403 MB | 5 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Abdur Rachman Wahed](https://appshunter.io/developer/1641207709) | [Purnima Raj](https://appshunter.io/developer/1674362859) |

## What reviewers say

### WonderJack

[App page](https://appshunter.io/ios/app/wonderjack/id6444728175)

**In-app purchases:** none


### Fluency

[App page](https://appshunter.io/ios/app/fluency-dyslexia-reading-app/id6736867163)

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

**In-app purchases:** none


## Frequently asked questions

### Is WonderJack free?

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

### Is Fluency free?

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

### Do WonderJack or Fluency have ads?

Neither WonderJack nor Fluency shows ads.

### Which is updated more often, WonderJack or Fluency?

WonderJack ships an update every 2 months, and Fluency every 4 weeks. Most recently, WonderJack was updated on November 3, 2026 and Fluency 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.*