# Battery Internal Resistance vs FlowTimer

The clearest difference is device support: Battery Internal Resistance at 3 against FlowTimer's 1. Battery Internal Resistance also leads on iOS requirement (12.0 vs 17.0). On price, 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.

## The numbers

| Metric | Battery Internal Resistance | FlowTimer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 7 months |
| Size | 28 MB | 1 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Viet Hoang](https://appshunter.io/developer/1444382961) | [OUTZERA LLC](https://appshunter.io/developer/1748586839) |

## What reviewers say

### Battery Internal Resistance

[App page](https://appshunter.io/ios/app/battery-internal-resistance/id6478009129)

**Features:** macOS Compatibility

**In-app purchases:** none


### FlowTimer

[App page](https://appshunter.io/ios/app/flowtimer-productivity-waves/id6503253633)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Battery Internal Resistance free?

Battery Internal Resistance is free to download, with no in-app purchases.

### Is FlowTimer free?

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

### Do Battery Internal Resistance or FlowTimer have ads?

Neither Battery Internal Resistance nor FlowTimer 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.*