# Whatfix Preview vs ASO Keyword Optimizer PutKey

The clearest difference is in-app purchases: Whatfix Preview at none against ASO Keyword Optimizer PutKey's 2. Whatfix Preview also leads on ads (none vs shown) and iOS requirement (12.1 vs 15.0). ASO Keyword Optimizer PutKey's advantage is update cadence (every 6 days vs every 5 weeks). On price and device support there is nothing between them.

Both are free to download. ASO Keyword Optimizer PutKey sells 2 in-app purchases, starting at $2.99 per month. Whatfix Preview asks for nothing beyond the download.

Whatfix Preview ships an update every 5 weeks, ASO Keyword Optimizer PutKey every 6 days. The most recent releases landed on July 6, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Whatfix Preview | ASO Keyword Optimizer PutKey |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 6 days** |
| Size | 17 MB | 20 MB |
| Requires iOS | **12.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Whatfix Private Limited](https://appshunter.io/developer/1391079889) | [Asim Can Yagiz](https://appshunter.io/developer/1654138936) |

## What reviewers say

### Whatfix Preview

[App page](https://appshunter.io/ios/app/whatfix-preview/id1564052832)

**Features:** macOS Compatibility

**In-app purchases:** none


### ASO Keyword Optimizer PutKey

[App page](https://appshunter.io/ios/app/aso-keyword-optimizer-putkey/id6478461133)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access (Monthly) | $2.99 | per month |
| Unlimited Access (Yearly) | $24.99 | per year |


## Frequently asked questions

### Is Whatfix Preview free?

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

### Is ASO Keyword Optimizer PutKey free?

ASO Keyword Optimizer PutKey is free to download, with in-app purchases available.

### Do Whatfix Preview or ASO Keyword Optimizer PutKey have ads?

ASO Keyword Optimizer PutKey shows ads; Whatfix Preview does not.

### Which is updated more often, Whatfix Preview or ASO Keyword Optimizer PutKey?

Whatfix Preview ships an update every 5 weeks, and ASO Keyword Optimizer PutKey every 6 days. Most recently, Whatfix Preview was updated on July 6, 2026 and ASO Keyword Optimizer PutKey on September 23, 2026.

---

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