# Sign Learn vs C4official

The clearest difference is in-app purchases: Sign Learn at none against C4official's 2. Sign Learn also leads on update cadence (every 2 weeks vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. C4official sells 2 one-off in-app purchases. Sign Learn asks for nothing beyond the download.

Sign Learn ships an update every 2 weeks, C4official every 6 months. The most recent releases landed on October 13, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Sign Learn | C4official |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 months |
| Size | 19 MB | 52 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Islrtc NewDelhi](https://appshunter.io/developer/1644466410) | [TagMango Inc](https://appshunter.io/developer/1611765353) |

## What reviewers say

### Sign Learn

[App page](https://appshunter.io/ios/app/sign-learn/id1644466408)

**In-app purchases:** none


### C4official

[App page](https://appshunter.io/ios/app/c4official/id6737413255)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| C4 L2: Expansion Membership | $29.99 | one-time |
| C4L1: DIY Meta Ads | $49.99 | one-time |


## Frequently asked questions

### Is Sign Learn free?

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

### Is C4official free?

C4official is free to download, with in-app purchases available.

### Do Sign Learn or C4official have ads?

Neither Sign Learn nor C4official shows ads.

### Which is updated more often, Sign Learn or C4official?

Sign Learn ships an update every 2 weeks, and C4official every 6 months. Most recently, Sign Learn was updated on October 13, 2026 and C4official 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.*