# via vs Battery Duo

The clearest difference is in-app purchases: via at none against Battery Duo's 2. Battery Duo's advantage is update cadence (daily vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Battery Duo sells 2 in-app purchases, starting at $8.99 per year. via asks for nothing beyond the download.

via ships an update weekly, Battery Duo daily. The most recent releases landed on November 4, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | via | Battery Duo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Daily** |
| Size | 85 MB | 3 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [via traffic controlling gmbh](https://appshunter.io/developer/1722448595) | [Bertram Gotz Plischke](https://appshunter.io/developer/6823230601) |

## What reviewers say

### via

[App page](https://appshunter.io/ios/app/via-app/id6474740093)

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

**In-app purchases:** none


### Battery Duo

[App page](https://appshunter.io/ios/app/battery-duo/id6823230599)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Jahresabo | $8.99 | per year |
| Einmal kaufen | $24.99 | one-time |


## Frequently asked questions

### Is via free?

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

### Is Battery Duo free?

Battery Duo is free to download, with in-app purchases available.

### Do via or Battery Duo have ads?

Neither via nor Battery Duo shows ads.

### Which is updated more often, via or Battery Duo?

via ships an update weekly, and Battery Duo daily. Most recently, via was updated on November 4, 2026 and Battery Duo on November 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.*