# Evo by Ozobot vs DERS

The clearest difference is rating: DERS at 5.0 against Evo by Ozobot's 4.6. Evo by Ozobot's advantage is ratings volume (1.1K vs 4) and update cadence (every 2 months vs every 5 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

DERS holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Evo by Ozobot has 1.1K ratings behind it against 4, so its average is the more settled of the two.

Evo by Ozobot ships an update every 2 months, DERS every 5 months. The most recent releases landed on November 2, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Evo by Ozobot | DERS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (1.1K ratings)](https://appshunter.io/ios/app/evo-by-ozobot/id1145978152/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/ders/id1197202080/reviews)** |
| Number of ratings | **1.1K** | 4 |
| Positive reviews | 66.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | Free |
| Size | 239 MB | 0 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Evollve, Inc.](https://appshunter.io/developer/910831870) | [National Centre for Montessori in the Public Sector, Inc.](https://appshunter.io/developer/1197202079) |

## What reviewers say

### Evo by Ozobot

[App page](https://appshunter.io/ios/app/evo-by-ozobot/id1145978152)

This app serves as a companion for learning and creating with a robot companion. It provides access to coding tools, classroom resources, and support to maximize the robot's capabilities for educational and home use.

**Highlights:** Learn with robot companion, Create with robot companion, Connect with robot companion, Ozobot Blockly access, Classroom resources, FAQs and support

**In-app purchases:** none

**What reviewers like**

- 🤩 Fun and engaging app
- 👍 User-friendly interface
- 💡 Innovative features like Ozoblockly programming
- 🤖 Great for learning about robotics and coding

**What reviewers complain about**

- 🐛 Frequent app crashes and bugs
- 🔧 Stripped of many features after recent update
- 🔋 Poor battery life for the Ozobot Evo
- 📱 Connectivity issues with the app and Ozobot

**Reported bugs**

- Firmware update bricking Ozobot devices
- Inability to connect and calibrate Ozobot with the app
- Saved programs not working after app updates

**Requested features**

- Bring back removed features like customization, tricks, and accounts
- Add battery percentage indicator for Ozobot Evo
- Improve app navigation and make key functions more accessible
- Expand programming and coding capabilities


### DERS

[App page](https://appshunter.io/ios/app/ders/id1197202080)

This tool assesses the quality of learning environments for children aged 2.5 to 12. It measures environmental design and implementation against desired developmental outcomes, focusing on executive functions, literacy, and social-emotional growth.

**Highlights:** Measures learning environment quality, Focuses on executive functions, Assesses literacy development, Evaluates social-emotional growth, Research-based environmental attributes, Classroom observation tool

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

**In-app purchases:** none


## Frequently asked questions

### Is Evo by Ozobot free?

Evo by Ozobot is free to download, with no in-app purchases.

### Is DERS free?

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

### Which has better reviews, Evo by Ozobot or DERS?

DERS is rated higher. Evo by Ozobot averages 4.6 out of 5 from 1.1K ratings, while DERS averages 5.0 from 4 ratings.

### Do Evo by Ozobot or DERS have ads?

Neither Evo by Ozobot nor DERS shows ads.

### Which is updated more often, Evo by Ozobot or DERS?

Evo by Ozobot ships an update every 2 months, and DERS every 5 months. Most recently, Evo by Ozobot was updated on November 2, 2026 and DERS on October 29, 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.*