# Teach on Mars vs ELC TR U 2.0

The clearest difference is iOS requirement: Teach on Mars at 13.0 against ELC TR U 2.0's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Teach on Mars ships an update every 6 weeks, ELC TR U 2.0 every 3 weeks. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Teach on Mars | ELC TR U 2.0 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/teach-on-mars/id1580854583/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 120 MB | 33 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Teach on Mars](https://appshunter.io/developer/674099907) | [The Estee Lauder Companies Inc.](https://appshunter.io/developer/1343238385) |

## What reviewers say

### Teach on Mars

[App page](https://appshunter.io/ios/app/teach-on-mars/id1580854583)

Expand your daily knowledge with diverse content and personalized learning. Compete with friends, earn badges, and achieve expert status through certifications. Stay updated on digital learning trends via the news feed.

**Highlights:** Hundreds of content on various themes, Personalized profile and preferences, Challenge friends and colleagues, Collect badges and accumulate points, Reach top of leaderboards, Obtain certifications, Digital learning trends news feed

**Features:** macOS Compatibility

**In-app purchases:** none


### ELC TR U 2.0

[App page](https://appshunter.io/ios/app/elc-tr-u-20/id6737224193)

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

**In-app purchases:** none


## Frequently asked questions

### Is Teach on Mars free?

Teach on Mars is free to download, with no in-app purchases.

### Is ELC TR U 2.0 free?

ELC TR U 2.0 is free to download, with no in-app purchases.

### Do Teach on Mars or ELC TR U 2.0 have ads?

Neither Teach on Mars nor ELC TR U 2.0 shows ads.

### Which is updated more often, Teach on Mars or ELC TR U 2.0?

Teach on Mars ships an update every 6 weeks, and ELC TR U 2.0 every 3 weeks. Most recently, Teach on Mars was updated on November 3, 2026 and ELC TR U 2.0 on October 25, 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.*