# PLAN4 vs c

PLAN4 and c 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. Neither carries in-app purchases, so what you see is what you pay.

PLAN4 ships an update every 3 months, c every 6 weeks. Both last shipped on October 3, 2026.

## The numbers

| Metric | PLAN4 | c |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Size | 20 MB | 38 MB |
| Requires iOS | 15.5 | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PLAN4 Software GmbH](https://appshunter.io/developer/1548262679) | [MAPAL Dr. Kress SE & Co. KG](https://appshunter.io/developer/1226373999) |

## What reviewers say

### PLAN4

[App page](https://appshunter.io/ios/app/plan4-gebaudecheck/id1485242041)

**Features:** Vision Pro support

**In-app purchases:** none


### c

[App page](https://appshunter.io/ios/app/c-com-assistant/id1524029515)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PLAN4 free?

PLAN4 is free to download, with no in-app purchases.

### Is c free?

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

### Do PLAN4 or c have ads?

Neither PLAN4 nor c shows ads.

### Which is updated more often, PLAN4 or c?

PLAN4 ships an update every 3 months, and c every 6 weeks. Most recently, PLAN4 was updated on October 3, 2026 and c on October 3, 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.*