# Scale Sync Maps vs YX battery

The clearest difference is in-app purchases: YX battery at none against Scale Sync Maps's 1. YX battery also leads on iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Scale Sync Maps sells 1 one-off in-app purchase. YX battery asks for nothing beyond the download.

## The numbers

| Metric | Scale Sync Maps | YX battery |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Size | 1 MB | 44 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Tatsuya Yamaguchi](https://appshunter.io/developer/447542345) | [远飞 周](https://appshunter.io/developer/1618577296) |

## What reviewers say

### Scale Sync Maps

[App page](https://appshunter.io/ios/app/scale-sync-maps/id6473813026)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Access Unlock | $1.99 | one-time |


### YX battery

[App page](https://appshunter.io/ios/app/yx-battery/id6761040548)

**In-app purchases:** none


## Frequently asked questions

### Is Scale Sync Maps free?

Scale Sync Maps is free to download, with in-app purchases available.

### Is YX battery free?

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

### Do Scale Sync Maps or YX battery have ads?

Neither Scale Sync Maps nor YX battery shows ads.

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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.*