# NeuroVis — See how a CNN thinks

> See how a CNN thinks (iPhone/iPad app by 兴 吴.)

- Source: https://appshunter.io/ios/app/neurovis/id6806290487 (this page in markdown: same URL + `.md`)
- Developer: [兴 吴](https://appshunter.io/developer/6806118661)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 17.6 · 4 MB
- Languages: American English
- Released: 2026-09-14
- Data updated: 2026-10-11

## What is NeuroVis?

The hardest part of learning CNNs isn't the math — it's not being able to picture what's actually happening.

What exactly happens when the kernel slides across? Why does the feature map look like that? Why does adding one more layer help? Textbooks answer with symbols. NeuroVis shows you.

Draw a digit with your finger, and a real CNN classifies it layer by layer in front of you — input tensor, convolution feature maps, activation, max pooling, and the softmax probability for each of the ten digits. Every stroke recomputes the entire chain instantly.

Tap any feature map and the kernel sweeps across the input cell by cell, so you can see exactly where each output number comes from. Step through it, pause it, or just read the values off the grid.

Wondering what those numbers inside the kernel actually do? Change one and watch the feature map follow. Wondering whether another layer matters? Add it and find out on the spot.

And at the end, it tells you why it picked that digit and not another one — which strokes count as evidence, and which argue against it.

This isn't a canned animation. It's a real model running on your phone. Fully offline, no data collected.

For: students learning deep learning, engineers building intuition, and anyone who has read the formulas but still has no mental picture.

## Is NeuroVis safe?

Not enough ratings yet to assess NeuroVis.

## Is NeuroVis legit?

NeuroVis has limited verification signals. The AppsHunter Legitimacy Score for NeuroVis is 50 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.1 — 2026-09-25

Updated the App Store page to better explain what NeuroVis does.

### 1.0 — 2026-09-15

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-11.*