# ASO Keyword Optimizer PutKey vs Zero

ASO Keyword Optimizer PutKey and Zero are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. ASO Keyword Optimizer PutKey sells 2 in-app purchases, starting at $2.99 per month and Zero sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | ASO Keyword Optimizer PutKey | Zero |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 days | — |
| Size | 20 MB | 12 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Asim Can Yagiz](https://appshunter.io/developer/1654138936) | [Thuong Nguyen](https://appshunter.io/developer/948221852) |

## What reviewers say

### 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 |


### Zero

[App page](https://appshunter.io/ios/app/zero-check-website-status/id6478543338)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Unlimited Websites | $1.99 | one-time |
| Professional | $2.99 | one-time |


## Frequently asked questions

### Is ASO Keyword Optimizer PutKey free?

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

### Is Zero free?

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

### Do ASO Keyword Optimizer PutKey or Zero have ads?

Both ASO Keyword Optimizer PutKey and Zero show ads.

---

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