# Neural Net for Handwriting vs Collatz Explorer

The clearest difference is review sentiment: Collatz Explorer at 100% against Neural Net for Handwriting's 50%. Collatz Explorer also leads on rating (4.6 vs 2.0). Neural Net for Handwriting's advantage is update cadence (every 5 days vs monthly) and device support (3 vs 1). On price, ratings volume, 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.

Collatz Explorer holds the better App Store score, 4.6 against 2.0. Both are backed by a comparable volume of ratings — 3 and 7 respectively. Written reviews point the same way: 50% of Neural Net for Handwriting's written reviews are positive against 100% of Collatz Explorer's.

Neural Net for Handwriting ships an update every 5 days, Collatz Explorer monthly. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Neural Net for Handwriting | Collatz Explorer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (3 ratings)](https://appshunter.io/ios/app/neural-net-for-handwriting/id1317853171/reviews) | **[4.6 (7 ratings)](https://appshunter.io/ios/app/collatz-explorer/id6755121221/reviews)** |
| Number of ratings | 3 | **7** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Monthly |
| Monetization | Free | Free |
| Size | 159 MB | 1 MB |
| Requires iOS | **8.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Frank Zielen](https://appshunter.io/developer/1173914621) | [Berk Sucu](https://appshunter.io/developer/1852063488) |

## What reviewers say

### Neural Net for Handwriting

[App page](https://appshunter.io/ios/app/neural-net-for-handwriting/id1317853171)

Train and test a neural network for recognizing handwritten digits. Utilize an embedded database or teach it with your own handwriting via camera or touch input.

**Highlights:** Train 3-layer neural nets, Recognize handwritten digits 0-9, Use embedded MNIST database, Teach with smartphone camera, Teach by writing on screen, Based on 'Make Your Own Neural Network' book

**Features:** macOS Compatibility

**In-app purchases:** none


### Collatz Explorer

[App page](https://appshunter.io/ios/app/collatz-explorer/id6755121221)

Explore mathematical sequences with this app. It calculates the standard Collatz sequence for any number you enter and can also display sequences from an alternative 3x-1 function.

**Highlights:** Calculate Collatz sequences, Calculate 3x-1 function sequences, Input any number, Visualize sequences

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

**In-app purchases:** none


## Frequently asked questions

### Is Neural Net for Handwriting free?

Neural Net for Handwriting is free to download, with no in-app purchases.

### Is Collatz Explorer free?

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

### Which has better reviews, Neural Net for Handwriting or Collatz Explorer?

Collatz Explorer is rated higher. Neural Net for Handwriting averages 2.0 out of 5 from 3 ratings, while Collatz Explorer averages 4.6 from 7 ratings.

### Do Neural Net for Handwriting or Collatz Explorer have ads?

Neither Neural Net for Handwriting nor Collatz Explorer shows ads.

### Which is updated more often, Neural Net for Handwriting or Collatz Explorer?

Neural Net for Handwriting ships an update every 5 days, and Collatz Explorer monthly. Most recently, Neural Net for Handwriting was updated on October 7, 2026 and Collatz Explorer on October 13, 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.*