# One vs Whystl

The clearest difference is in-app purchases: One at none against Whystl's 1. One also leads on iOS requirement (17.0 vs 26.0). Whystl's advantage is update cadence (every 5 days vs every 18 months). On price, ads and device support there is nothing between them.

Both are free to download. Whystl sells 1 in-app purchase, starting at $5.49 per month. One asks for nothing beyond the download.

One ships an update every 18 months, Whystl every 5 days. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | One | Whystl |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 5 days** |
| Size | 2 MB | 7 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [2nd Labs Limited](https://appshunter.io/developer/285875210) | [Iain Downer](https://appshunter.io/developer/1896243614) |

## What reviewers say

### One

[App page](https://appshunter.io/ios/app/one-nil/id6466343122)

**Features:** iMessage stickers

**In-app purchases:** none


### Whystl

[App page](https://appshunter.io/ios/app/whystl/id6806612806)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Whystl Premium Monthly | $5.49 | per month |


## Frequently asked questions

### Is One free?

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

### Is Whystl free?

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

### Do One or Whystl have ads?

Neither One nor Whystl shows ads.

### Which is updated more often, One or Whystl?

One ships an update every 18 months, and Whystl every 5 days. Most recently, One was updated on October 16, 2026 and Whystl 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.*