# WHO SSA vs Zero Carbon Navi

The clearest difference is iOS requirement: WHO SSA at 11.0 against Zero Carbon Navi's 13.0. 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 | WHO SSA | Zero Carbon Navi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Size | 66 MB | 90 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [World Health Organization](https://appshunter.io/developer/1462736279) | [NextDrive Co.](https://appshunter.io/developer/1005329987) |

## What reviewers say

### WHO SSA

[App page](https://appshunter.io/ios/app/who-ssa/id1551338016)

**Features:** macOS Compatibility

**In-app purchases:** none


### Zero Carbon Navi

[App page](https://appshunter.io/ios/app/zero-carbon-navi/id6475660584)

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

**In-app purchases:** none


## Frequently asked questions

### Is WHO SSA free?

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

### Is Zero Carbon Navi free?

Zero Carbon Navi is free to download, with no in-app purchases.

### Do WHO SSA or Zero Carbon Navi have ads?

Neither WHO SSA nor Zero Carbon Navi 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.*