# Eterna vs Planetary Hours

The clearest difference is update cadence: Planetary Hours at every 6 weeks against Eterna's every 3 months. Eterna's advantage is iOS requirement (12.0 vs 14.0). 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.

Eterna ships an update every 3 months, Planetary Hours every 6 weeks. The most recent releases landed on November 8, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Eterna | Planetary Hours |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Size | 42 MB | 31 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eterna Inc.](https://appshunter.io/developer/1500225556) | [MUHARREM CETINKAYA](https://appshunter.io/developer/1772448046) |

## What reviewers say

### Eterna

[App page](https://appshunter.io/ios/app/eterna/id6477453458)

**Features:** macOS Compatibility

**In-app purchases:** none


### Planetary Hours

[App page](https://appshunter.io/ios/app/planetary-hours-ibn-al-arabi/id6736566086)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Eterna free?

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

### Is Planetary Hours free?

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

### Do Eterna or Planetary Hours have ads?

Neither Eterna nor Planetary Hours shows ads.

### Which is updated more often, Eterna or Planetary Hours?

Eterna ships an update every 3 months, and Planetary Hours every 6 weeks. Most recently, Eterna was updated on November 8, 2026 and Planetary Hours on November 4, 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.*