# SOLID ENGLISH vs CORO Edu

The clearest difference is update cadence: CORO Edu at every 8 days against SOLID ENGLISH's every 3 weeks. CORO Edu also leads on iOS requirement (12.0 vs 14.0). 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.

SOLID ENGLISH ships an update every 3 weeks, CORO Edu every 8 days. The most recent releases landed on September 12, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | SOLID ENGLISH | CORO Edu |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Size | 109 MB | 119 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DOTB SOFTWARE COMPANY LIMITED](https://appshunter.io/developer/1475488444) | [CORO VIETNAM COMPANY LIMITED](https://appshunter.io/developer/1866826489) |

## What reviewers say

### SOLID ENGLISH

[App page](https://appshunter.io/ios/app/solid-english/id6740768578)

**Features:** macOS Compatibility

**In-app purchases:** none


### CORO Edu

[App page](https://appshunter.io/ios/app/coro-edu/id6752333947)

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

**In-app purchases:** none


## Frequently asked questions

### Is SOLID ENGLISH free?

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

### Is CORO Edu free?

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

### Do SOLID ENGLISH or CORO Edu have ads?

Neither SOLID ENGLISH nor CORO Edu shows ads.

### Which is updated more often, SOLID ENGLISH or CORO Edu?

SOLID ENGLISH ships an update every 3 weeks, and CORO Edu every 8 days. Most recently, SOLID ENGLISH was updated on September 12, 2026 and CORO Edu on September 15, 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.*