# Domain Inspector vs WhatDiff

The clearest difference is update cadence: Domain Inspector at every 5 weeks against WhatDiff's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Domain Inspector sells 1 one-off in-app purchase and WhatDiff sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Domain Inspector ships an update every 5 weeks, WhatDiff every 5 months. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Domain Inspector | WhatDiff |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Size | 24 MB | 2 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [akira ohmachi](https://appshunter.io/developer/1338624340) | [栋 陈](https://appshunter.io/developer/560090281) |

## What reviewers say

### Domain Inspector

[App page](https://appshunter.io/ios/app/domain-inspector/id6758211148)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### WhatDiff

[App page](https://appshunter.io/ios/app/whatdiff/id6762343310)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WhatDiff Month Subscription | $2.99 | per month |
| WhatDiff Annual Subscription | $12.99 | per year |
| WhatDiff Lifetime License | $24.99 | one-time |


## Frequently asked questions

### Is Domain Inspector free?

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

### Is WhatDiff free?

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

### Do Domain Inspector or WhatDiff have ads?

Neither Domain Inspector nor WhatDiff shows ads.

### Which is updated more often, Domain Inspector or WhatDiff?

Domain Inspector ships an update every 5 weeks, and WhatDiff every 5 months. Most recently, Domain Inspector was updated on October 25, 2026 and WhatDiff on October 26, 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.*