# WebviewTester vs Twinin

The clearest difference is in-app purchases: WebviewTester at none against Twinin's 1. WebviewTester also leads on ads (none vs shown) and update cadence (daily vs fortnightly). On price, device support and iOS requirement there is nothing between them.

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

WebviewTester ships an update daily, Twinin fortnightly. The most recent releases landed on October 8, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | WebviewTester | Twinin |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Fortnightly |
| Size | 1 MB | 9 MB |
| Requires iOS | 18.2 | **17** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [Seiji Fujiyama](https://appshunter.io/developer/1807481814) | [YUUSUKE HARASAWA](https://appshunter.io/developer/664328221) |

## What reviewers say

### WebviewTester

[App page](https://appshunter.io/ios/app/webviewtester/id6744392801)

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

**In-app purchases:** none


### Twinin

[App page](https://appshunter.io/ios/app/twinin/id6746599165)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Twinin pro | $1.99 | one-time |


## Frequently asked questions

### Is WebviewTester free?

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

### Is Twinin free?

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

### Do WebviewTester or Twinin have ads?

Twinin shows ads; WebviewTester does not.

### Which is updated more often, WebviewTester or Twinin?

WebviewTester ships an update daily, and Twinin fortnightly. Most recently, WebviewTester was updated on October 8, 2026 and Twinin on October 19, 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.*