# Hubble vs Didactic climate models

The clearest difference is price: Didactic climate models at Free against Hubble's $0.99. Didactic climate models also leads on update cadence (every 6 weeks vs every 9 months) and iOS requirement (12.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

Didactic climate models is free to download; Hubble costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Hubble ships an update every 9 months, Didactic climate models every 6 weeks. Both last shipped on October 1, 2026.

## The numbers

| Metric | Hubble | Didactic climate models |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 6 weeks** |
| Size | 1.7 GB | 9 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 9+ | 4+ |
| Developer | [Alparslan Topbas](https://appshunter.io/developer/1130875171) | [Université de Genève](https://appshunter.io/developer/532494133) |

## What reviewers say

### Hubble

[App page](https://appshunter.io/ios/app/hubble-deep-space-pro/id1579382668)

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

**In-app purchases:** none


### Didactic climate models

[App page](https://appshunter.io/ios/app/didactic-climate-models/id6469305388)

**In-app purchases:** none


## Frequently asked questions

### Is Hubble free?

Hubble costs $0.99, with no in-app purchases.

### Is Didactic climate models free?

Didactic climate models is free to download, with no in-app purchases.

### Do Hubble or Didactic climate models have ads?

Neither Hubble nor Didactic climate models shows ads.

### Which is updated more often, Hubble or Didactic climate models?

Hubble ships an update every 9 months, and Didactic climate models every 6 weeks. Most recently, Hubble was updated on October 1, 2026 and Didactic climate models on October 1, 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.*