# Whenlyy vs ChronoNano

The clearest difference is in-app purchases: ChronoNano at none against Whenlyy's 1. ChronoNano also leads on update cadence (every 5 days vs every 4 months). Whenlyy's advantage is iOS requirement (16.6 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. Whenlyy sells 1 one-off in-app purchase. ChronoNano asks for nothing beyond the download.

Whenlyy ships an update every 4 months, ChronoNano every 5 days. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Whenlyy | ChronoNano |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Size | 5 MB | 6 MB |
| Requires iOS | **16.6** | 18.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Erkmen Ergul](https://appshunter.io/developer/1798402976) | [Saeed Alshamsi](https://appshunter.io/developer/1843100835) |

## What reviewers say

### Whenlyy

[App page](https://appshunter.io/ios/app/whenlyy/id6749324955)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Whenly Premium | $1.79 | one-time |


### ChronoNano

[App page](https://appshunter.io/ios/app/chrononano/id6753213952)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Whenlyy free?

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

### Is ChronoNano free?

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

### Do Whenlyy or ChronoNano have ads?

Neither Whenlyy nor ChronoNano shows ads.

### Which is updated more often, Whenlyy or ChronoNano?

Whenlyy ships an update every 4 months, and ChronoNano every 5 days. Most recently, Whenlyy was updated on October 7, 2026 and ChronoNano on October 8, 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.*