# PixConvert vs WhatDiff

The clearest difference is in-app purchases: PixConvert at none against WhatDiff's 3. PixConvert also leads on update cadence (every 3 weeks vs every 5 months) and iOS requirement (13.0 vs 16.4). WhatDiff's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. WhatDiff sells 3 in-app purchases, starting at $2.99 per month. PixConvert asks for nothing beyond the download.

PixConvert ships an update every 3 weeks, WhatDiff every 5 months. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | PixConvert | WhatDiff |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Size | 38 MB | 2 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Doublew](https://appshunter.io/developer/1804300678) | [栋 陈](https://appshunter.io/developer/560090281) |

## What reviewers say

### PixConvert

[App page](https://appshunter.io/ios/app/pixconvert/id6755016578)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 PixConvert free?

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

### Is WhatDiff free?

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

### Do PixConvert or WhatDiff have ads?

PixConvert shows ads; WhatDiff does not.

### Which is updated more often, PixConvert or WhatDiff?

PixConvert ships an update every 3 weeks, and WhatDiff every 5 months. Most recently, PixConvert was updated on October 17, 2026 and WhatDiff on October 11, 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.*