# TOPA SLI vs XD battery

The clearest difference is iOS requirement: XD battery at 12.0 against TOPA SLI's 15.0. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | TOPA SLI | XD battery |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Daily | — |
| Size | 4 MB | 35 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [XIAMEN READYGO ENERGY TECHNOLOGY CO., Ltd.](https://appshunter.io/developer/1723114970) | [金玲 徐](https://appshunter.io/developer/1751878151) |

## What reviewers say

### TOPA SLI

[App page](https://appshunter.io/ios/app/topa-sli/id6470206060)

**Features:** macOS Compatibility

**In-app purchases:** none


### XD battery

[App page](https://appshunter.io/ios/app/xd-battery/id6747100382)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TOPA SLI free?

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

### Is XD battery free?

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

### Do TOPA SLI or XD battery have ads?

Neither TOPA SLI nor XD 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.*