# UNDIApp v4 vs CLAP.

The clearest difference is in-app purchases: CLAP. at none against UNDIApp v4's 3. CLAP. also leads on update cadence (weekly vs every 6 weeks). UNDIApp v4's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. UNDIApp v4 sells 3 one-off in-app purchases. CLAP. asks for nothing beyond the download.

UNDIApp v4 ships an update every 6 weeks, CLAP. weekly. The most recent releases landed on September 24, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | UNDIApp v4 | CLAP. |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 50 MB | 103 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [1•2•7•8 réalisation(s)](https://appshunter.io/developer/1780334658) | [Meraky Development s.a.r.l](https://appshunter.io/developer/1691367628) |

## What reviewers say

### UNDIApp v4

[App page](https://appshunter.io/ios/app/undiapp-v4/id1577959494)

Manage all your intermittency benefits in one app. Track compensation, deductibles, overpayments, and recalculate your earnings. Access all the latest UNDIA information.

**Highlights:** Compensation tracking, Deductible management, Overpayment handling, Recalculation tools, UNDIA information access

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Merci | $0.99 | one-time |
| Grand merci | $2.99 | one-time |
| Énorme merci ! | $8.99 | one-time |


### CLAP.

[App page](https://appshunter.io/ios/app/clap/id6480415787)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UNDIApp v4 free?

UNDIApp v4 is free to download, with in-app purchases available.

### Is CLAP. free?

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

### Do UNDIApp v4 or CLAP. have ads?

CLAP. shows ads; UNDIApp v4 does not.

### Which is updated more often, UNDIApp v4 or CLAP.?

UNDIApp v4 ships an update every 6 weeks, and CLAP. weekly. Most recently, UNDIApp v4 was updated on September 24, 2026 and CLAP. on September 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*