# Battery Internal Resistance vs Just Focus Timer

The clearest difference is iOS requirement: Battery Internal Resistance at 12.0 against Just Focus Timer's 17.5. 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 | Battery Internal Resistance | Just Focus Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 4 months |
| Size | 28 MB | 24 MB |
| Requires iOS | **12.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Viet Hoang](https://appshunter.io/developer/1444382961) | [Civan Korkmaz](https://appshunter.io/developer/1725275668) |

## What reviewers say

### Battery Internal Resistance

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Just Focus Timer

[App page](https://appshunter.io/ios/app/just-focus-timer/id6478323264)

**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 Just Focus Timer free?

Just Focus Timer is free to download, with no in-app purchases.

### Do Battery Internal Resistance or Just Focus Timer have ads?

Neither Battery Internal Resistance nor Just Focus Timer 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.*