# [EN] AI Voice vs WhatDiff

The clearest difference is in-app purchases: [EN] AI Voice at none against WhatDiff's 3. [EN] AI Voice also leads on update cadence (daily vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

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

[EN] AI Voice ships an update daily, WhatDiff every 5 months. The most recent releases landed on September 11, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | [EN] AI Voice | WhatDiff |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 5 months |
| Size | 518 MB | 2 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Khang Le](https://appshunter.io/developer/1078541780) | [栋 陈](https://appshunter.io/developer/560090281) |

## What reviewers say

### [EN] AI Voice

[App page](https://appshunter.io/ios/app/en-ai-voice/id6478458612)

**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 [EN] AI Voice free?

[EN] AI Voice is free to download, with no in-app purchases.

### Is WhatDiff free?

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

### Do [EN] AI Voice or WhatDiff have ads?

Neither [EN] AI Voice nor WhatDiff shows ads.

### Which is updated more often, [EN] AI Voice or WhatDiff?

[EN] AI Voice ships an update daily, and WhatDiff every 5 months. Most recently, [EN] AI Voice was updated on September 11, 2026 and WhatDiff on September 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*