# Clampmitter vs Whenr Whenr

The clearest difference is update cadence: Whenr Whenr at every 22 months against Clampmitter's every 69 months. Clampmitter's advantage is iOS requirement (12.0 vs 16.1). 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.

Clampmitter ships an update every 69 months, Whenr Whenr every 22 months. The most recent releases landed on September 29, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Clampmitter | Whenr Whenr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/whenr-whenr/id1659481999/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 69 months | **Every 22 months** |
| Monetization | — | Free |
| Size | 8 MB | 4 MB |
| Requires iOS | **12.0** | 16.1 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Rycom](https://appshunter.io/developer/1249915439) | [Darin Kelkhoff](https://appshunter.io/developer/1659482001) |

## What reviewers say

### Clampmitter

[App page](https://appshunter.io/ios/app/clampmitter/id1493227952)

**Features:** macOS Compatibility

**In-app purchases:** none


### Whenr Whenr

[App page](https://appshunter.io/ios/app/whenr-whenr/id1659481999)

This app simplifies complex time calculations, helping you easily determine time differences, future times, and duration sums. It offers an intuitive interface and convenient options to copy, set reminders, or share results.

**Highlights:** Calculate time differences, Determine future times, Sum time durations, Copy results to clipboard, Create reminders from results, Share time calculations

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Clampmitter free?

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

### Is Whenr Whenr free?

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

### Do Clampmitter or Whenr Whenr have ads?

Neither Clampmitter nor Whenr Whenr shows ads.

### Which is updated more often, Clampmitter or Whenr Whenr?

Clampmitter ships an update every 69 months, and Whenr Whenr every 22 months. Most recently, Clampmitter was updated on September 29, 2026 and Whenr Whenr on October 2, 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.*