# eCollection vs Synthesis Math Tutor for Kids

The clearest difference is review sentiment: Synthesis Math Tutor for Kids at 77% against eCollection's 18%. Synthesis Math Tutor for Kids also leads on rating (4.6 vs 4.0) and update cadence (monthly vs every 6 months). eCollection's advantage is in-app purchases (none vs 5) and iOS requirement (12.2 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Synthesis Math Tutor for Kids sells 5 in-app purchases, starting at $29.00 per month. eCollection asks for nothing beyond the download.

Synthesis Math Tutor for Kids holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: Synthesis Math Tutor for Kids has 10K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 18% of eCollection's written reviews are positive against 77% of Synthesis Math Tutor for Kids's.

eCollection ships an update every 6 months, Synthesis Math Tutor for Kids monthly. The most recent releases landed on October 22, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | eCollection | Synthesis Math Tutor for Kids |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (3 ratings)](https://appshunter.io/ios/app/ecollection/id675521971/reviews) | **[4.6 (10K ratings)](https://appshunter.io/ios/app/synthesis-math-tutor-for-kids/id6448335635/reviews)** |
| Number of ratings | 3 | **10K** |
| Positive reviews | 18.2% of reviews | **76.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | **Free** | Freemium |
| Size | 99 MB | 3 MB |
| Requires iOS | **12.2** | 16.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cengage Learning Australia](https://appshunter.io/developer/454848144) | [Synthesis](https://appshunter.io/developer/1684445188) |

## What reviewers say

### eCollection

[App page](https://appshunter.io/ios/app/ecollection/id675521971)

This app provides a digital platform for guided reading, offering a library of leveled eBooks and interactive features for teachers and students. It supports various reading profiles, word interaction, recording, drawing, and text editing to enhance comprehension and engagement.

**Highlights:** Guided Reading Profile, Custom Reading Profile, Independent Reading Profile, Tap to Hear Words, Tap to Save Words, Record Mode, Draw Mode

**In-app purchases:** none

**What reviewers like**

- 📚 Great book collection
- 📈 Good for learning progress
- 💡 Well-conceived concept
- 👍 Easy for children to use (in theory)
- 😊 Kids enjoy the books

**What reviewers complain about**

- 🐛 Frequent crashes and freezes
- ❌ Unusable interface
- 😩 Frustrating user experience
- ⏳ Slow connection and login
- 🚫 Cannot exit books or modes

**Reported bugs**

- App not working
- Crash delete download repeat
- Can’t quit from drawing mode
- Stuck, hard to return to main page
- No home page, cannot back to home page

**Requested features**

- Save login details
- Clear navigation to return to main page/shelf
- Option to buy individual subscriptions
- Add bigger books (e.g., comics)
- Clarify privacy for voice recording


### Synthesis Math Tutor for Kids

[App page](https://appshunter.io/ios/app/synthesis-math-tutor-for-kids/id6448335635)

An AI-powered math tutor offers personalized, adaptive lessons for children aged 5-11. It covers a range of topics with interactive guidance and engaging gameplay, helping to build confidence and critical thinking skills.

**Highlights:** AI-powered adaptive lessons, Interactive digital tutor, Multi-sensory learning with digital manipulatives, Progress tracking for accuracy and speed, Engaging gameplay for math practice, Adaptive flashcards

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Synthesis Tutor Family Monthly | $29.00 | per month |
| Synthesis Tutor Family Monthly | $29.00 | per month |
| Synthesis Tutor Annual Family | $119.00 | per year |
| Synthesis Tutor Annual Family | $119.00 | per year |
| Synthesis Tutor Annual Monthly | $294.99 | per year |


## Frequently asked questions

### Is eCollection free?

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

### Is Synthesis Math Tutor for Kids free?

Synthesis Math Tutor for Kids is free to download, with in-app purchases available.

### Which has better reviews, eCollection or Synthesis Math Tutor for Kids?

Synthesis Math Tutor for Kids is rated higher. eCollection averages 4.0 out of 5 from 3 ratings, while Synthesis Math Tutor for Kids averages 4.6 from 10K ratings.

### Do eCollection or Synthesis Math Tutor for Kids have ads?

Neither eCollection nor Synthesis Math Tutor for Kids shows ads.

### Which is updated more often, eCollection or Synthesis Math Tutor for Kids?

eCollection ships an update every 6 months, and Synthesis Math Tutor for Kids monthly. Most recently, eCollection was updated on October 22, 2026 and Synthesis Math Tutor for Kids on October 27, 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.*