# Reading Challenge vs SoLangu

Reading Challenge and SoLangu are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Reading Challenge sells 3 in-app purchases, starting at $1.49 per month and SoLangu sells 4 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Reading Challenge ships an update every 3 weeks, SoLangu monthly. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Reading Challenge | SoLangu |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 27 MB | 102 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Shohruxbek Atavullayev](https://appshunter.io/developer/1859528937) | [Softaar App Studio](https://appshunter.io/developer/1895033955) |

## What reviewers say

### Reading Challenge

[App page](https://appshunter.io/ios/app/reading-challenge/id6756414640)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $1.49 | per month |
| Yearly Premium | $7.99 | per year |
| Lifetime Premium | $14.99 | one-time |


### SoLangu

[App page](https://appshunter.io/ios/app/solangu-ai-speaking-practice/id6762832986)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $6.99 | per 7 days |
| Monthly | $24.99 | per month |
| 3 Months | $59.99 | per 3 months |
| Yearly | $179.99 | per year |


## Frequently asked questions

### Is Reading Challenge free?

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

### Is SoLangu free?

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

### Do Reading Challenge or SoLangu have ads?

Neither Reading Challenge nor SoLangu shows ads.

### Which is updated more often, Reading Challenge or SoLangu?

Reading Challenge ships an update every 3 weeks, and SoLangu monthly. Most recently, Reading Challenge was updated on September 9, 2026 and SoLangu on September 10, 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.*