# SKYEMS vs PTattoo

The clearest difference is iOS requirement: PTattoo at 12.0 against SKYEMS's 18.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SKYEMS ships an update every 4 months, PTattoo every 5 months. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SKYEMS | PTattoo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Size | 22 MB | 72 MB |
| Requires iOS | 18.6 | **12.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 9+ |
| Developer | [Beijing chunzuomunian Technology Co., Ltd](https://appshunter.io/developer/1509386932) | [震 张](https://appshunter.io/developer/1226840578) |

## What reviewers say

### SKYEMS

[App page](https://appshunter.io/ios/app/skyems/id1503282837)

**Features:** macOS Compatibility

**In-app purchases:** none


### PTattoo

[App page](https://appshunter.io/ios/app/ptattoo/id6648774841)

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

**In-app purchases:** none


## Frequently asked questions

### Is SKYEMS free?

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

### Is PTattoo free?

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

### Do SKYEMS or PTattoo have ads?

Neither SKYEMS nor PTattoo shows ads.

### Which is updated more often, SKYEMS or PTattoo?

SKYEMS ships an update every 4 months, and PTattoo every 5 months. Most recently, SKYEMS was updated on October 8, 2026 and PTattoo on October 10, 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.*