# Zwanayo vs Astronomy

The clearest difference is ads: Astronomy at none against Zwanayo's shown. Astronomy also leads on update cadence (every 3 days vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Zwanayo ships an update fortnightly, Astronomy every 3 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Zwanayo | Astronomy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 3 days** |
| Size | 63 MB | 141 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Zwanayo SARL](https://appshunter.io/developer/1638101226) | [Pleiades Solutions](https://appshunter.io/developer/667994407) |

## What reviewers say

### Zwanayo

[App page](https://appshunter.io/ios/app/zwanayo/id1638101224)

**Features:** macOS Compatibility

**In-app purchases:** none


### Astronomy

[App page](https://appshunter.io/ios/app/astronomy-sky-map/id6768699204)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Zwanayo free?

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

### Is Astronomy free?

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

### Do Zwanayo or Astronomy have ads?

Zwanayo shows ads; Astronomy does not.

### Which is updated more often, Zwanayo or Astronomy?

Zwanayo ships an update fortnightly, and Astronomy every 3 days. Most recently, Zwanayo was updated on October 25, 2026 and Astronomy on October 28, 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.*