# Math Expert Lite vs DLR COMETS

The clearest difference is update cadence: DLR COMETS at every 3 weeks against Math Expert Lite's every 5 months. DLR COMETS also leads on iOS requirement (8.1 vs 12.0). 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.

Math Expert Lite ships an update every 5 months, DLR COMETS every 3 weeks. Both last shipped on October 10, 2026.

## The numbers

| Metric | Math Expert Lite | DLR COMETS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 11 MB | 416 MB |
| Requires iOS | 12.0 | **8.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Markus Ide](https://appshunter.io/developer/625191124) | [DLR German Aerospace Center e.V.](https://appshunter.io/developer/418202933) |

## What reviewers say

### Math Expert Lite

[App page](https://appshunter.io/ios/app/math-expert-lite/id981276547)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Math Expert Lite free?

Math Expert Lite is free to download, with no in-app purchases.

### Is DLR COMETS free?

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

### Do Math Expert Lite or DLR COMETS have ads?

Neither Math Expert Lite nor DLR COMETS shows ads.

### Which is updated more often, Math Expert Lite or DLR COMETS?

Math Expert Lite ships an update every 5 months, and DLR COMETS every 3 weeks. Most recently, Math Expert Lite was updated on October 10, 2026 and DLR COMETS on October 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*