# Whenr Whenr vs ChronoSum

The clearest difference is ads: Whenr Whenr at none against ChronoSum's shown. ChronoSum's advantage is update cadence (every 3 days vs every 11 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Whenr Whenr ships an update every 11 months, ChronoSum every 3 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Whenr Whenr | ChronoSum |
| --- | --- | --- |
| 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** | Yes |
| Update frequency | Every 11 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 4 MB | 5 MB |
| Requires iOS | **16.1** | 17.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Darin Kelkhoff](https://appshunter.io/developer/1659482001) | [Tiago Melo](https://appshunter.io/developer/1886966352) |

## What reviewers say

### Whenr Whenr

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

This app simplifies date and time calculations with a calculator-style interface. Easily add or subtract durations, find the difference between dates, and convert units of time without complex forms or modes.

**Highlights:** Date and time calculations, Duration addition and subtraction, Days between dates, Unit time conversions, Calculator-style interface, No mode switching

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none


### ChronoSum

[App page](https://appshunter.io/ios/app/chronosum-time-calculator/id6772844618)

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

**In-app purchases:** none


## Frequently asked questions

### Is Whenr Whenr free?

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

### Is ChronoSum free?

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

### Do Whenr Whenr or ChronoSum have ads?

ChronoSum shows ads; Whenr Whenr does not.

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

Whenr Whenr ships an update every 11 months, and ChronoSum every 3 days. Most recently, Whenr Whenr was updated on October 30, 2026 and ChronoSum on October 28, 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.*