# Plan 9 vs Metrik Unit Converter

The clearest difference is ads: Plan 9 at none against Metrik Unit Converter's shown. Plan 9 also leads on iOS requirement (14.0 vs 17.0). Metrik Unit Converter's advantage is update cadence (every 3 days vs every 24 months). On price, 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.

Plan 9 ships an update every 24 months, Metrik Unit Converter every 3 days. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Plan 9 | Metrik Unit Converter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 24 months | **Every 3 days** |
| Size | 1 MB | 16 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Paul Evenblij](https://appshunter.io/developer/286569767) | [Yigit Tamer](https://appshunter.io/developer/6807441309) |

## What reviewers say

### Plan 9

[App page](https://appshunter.io/ios/app/plan-9/id1510227252)

**In-app purchases:** none


### Metrik Unit Converter

[App page](https://appshunter.io/ios/app/metrik-unit-converter/id6807441307)

**In-app purchases:** none


## Frequently asked questions

### Is Plan 9 free?

Plan 9 is free to download, with no in-app purchases.

### Is Metrik Unit Converter free?

Metrik Unit Converter is free to download, with no in-app purchases.

### Do Plan 9 or Metrik Unit Converter have ads?

Metrik Unit Converter shows ads; Plan 9 does not.

### Which is updated more often, Plan 9 or Metrik Unit Converter?

Plan 9 ships an update every 24 months, and Metrik Unit Converter every 3 days. Most recently, Plan 9 was updated on October 27, 2026 and Metrik Unit Converter on October 24, 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.*