# DLR COMETS vs Teia

The clearest difference is in-app purchases: DLR COMETS at none against Teia's 1. DLR COMETS also leads on update cadence (every 3 weeks vs every 10 months) and iOS requirement (8.1 vs 13.0). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Teia sells 1 one-off in-app purchase. DLR COMETS asks for nothing beyond the download.

DLR COMETS ships an update every 3 weeks, Teia every 10 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | DLR COMETS | Teia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (7 ratings)](https://appshunter.io/ios/app/teia-3d-solar-system/id1672118518/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 10 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 416 MB | 615 MB |
| Requires iOS | **8.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DLR German Aerospace Center e.V.](https://appshunter.io/developer/418202933) | [Himalaya Computing](https://appshunter.io/developer/1205321932) |

## What reviewers say

### DLR COMETS

[App page](https://appshunter.io/ios/app/dlr-comets/id1363156480)

Explore the Rosetta mission to Comet 67P/Churyumov-Gerasimenko through an interactive exhibition. Discover the science behind comets and the historic Philae lander touchdown. Relive this exceptional spaceflight adventure with multimedia content.

**Highlights:** Interactive comet model, Mission highlights and photographs, Historical background on comets, Rosetta mission science, Philae lander touchdown details, Personal stories from the mission

**Features:** macOS Compatibility

**In-app purchases:** none


### Teia

[App page](https://appshunter.io/ios/app/teia-3d-solar-system/id1672118518)

Explore the solar system with realistic 3D models of planets and their moons. Discover fascinating facts and localized curiosities on planetary surfaces, presented by astronomy experts. Immerse yourself in detailed visuals that make you feel like you're visiting each celestial body.

**Highlights:** Realistic 3D solar system models, Localized surface curiosities, Expert-developed astronomical content, Detailed planetary visuals, Information on Mercury, Venus, Earth, Moon, Mars, Jupiter, Saturn, Uranus, Neptune, Over 40 pages of structured content

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Package | $5.99 | one-time |


## Frequently asked questions

### Is DLR COMETS free?

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

### Is Teia free?

Teia is free to download, with in-app purchases available.

### Do DLR COMETS or Teia have ads?

Neither DLR COMETS nor Teia shows ads.

### Which is updated more often, DLR COMETS or Teia?

DLR COMETS ships an update every 3 weeks, and Teia every 10 months. Most recently, DLR COMETS was updated on November 2, 2026 and Teia on November 3, 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.*