# Neuro Web vs Equation Encyclopedia

The clearest difference is in-app purchases: Neuro Web at none against Equation Encyclopedia's 9. Neuro Web also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). Equation Encyclopedia's advantage is update cadence (every 4 days vs every 11 days). On price and device support there is nothing between them.

Both are free to download. Equation Encyclopedia sells 9 in-app purchases, starting at $6.99 per month. Neuro Web asks for nothing beyond the download.

Neuro Web ships an update every 11 days, Equation Encyclopedia every 4 days. The most recent releases landed on September 16, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Neuro Web | Equation Encyclopedia |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 days | **Every 4 days** |
| Size | 38 MB | 451 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kenta Ichikawa](https://appshunter.io/developer/1693134078) | [SAMUEL MOYOSORE O ADEYIGA](https://appshunter.io/developer/1874179107) |

## What reviewers say

### Neuro Web

[App page](https://appshunter.io/ios/app/neuro-web/id6756815940)

**Features:** macOS Compatibility

**In-app purchases:** none


### Equation Encyclopedia

[App page](https://appshunter.io/ios/app/equation-encyclopedia/id6758647681)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $6.99 | per month |
| Pro Monthly | $10.99 | per month |
| Ultra Monthly | $17.99 | per month |
| Plus Yearly | $49.99 | per year |
| Pro Yearly | $99.99 | per year |
| Ultra Yearly | $149.99 | per year |
| 10 Energy | $0.99 | one-time |
| 30 Energy | $2.99 | one-time |
| 100 Energy | $8.99 | one-time |


## Frequently asked questions

### Is Neuro Web free?

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

### Is Equation Encyclopedia free?

Equation Encyclopedia is free to download, with in-app purchases available.

### Do Neuro Web or Equation Encyclopedia have ads?

Equation Encyclopedia shows ads; Neuro Web does not.

### Which is updated more often, Neuro Web or Equation Encyclopedia?

Neuro Web ships an update every 11 days, and Equation Encyclopedia every 4 days. Most recently, Neuro Web was updated on September 16, 2026 and Equation Encyclopedia on September 8, 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.*