# SchemaHD vs WaveCrux

The clearest difference is in-app purchases: WaveCrux at none against SchemaHD's 7. SchemaHD's advantage is iOS requirement (14.0 vs 16.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SchemaHD sells 7 one-off in-app purchases. WaveCrux asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 10 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | SchemaHD | WaveCrux |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/schemahd/id1578851758/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | Every 10 days |
| Monetization | Free | — |
| Size | 2 MB | 38 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Yasuaki Iwasaki](https://appshunter.io/developer/560857505) | [Ferrite Engineering LLC](https://appshunter.io/developer/6787506009) |

## What reviewers say

### SchemaHD

[App page](https://appshunter.io/ios/app/schemahd/id1578851758)

This app allows users to draw circuit diagrams for logic circuits, generating Verilog HDL and performing simulations. It simplifies FPGA development by using schematics instead of complex programming languages, offering advanced security and high-performance parallel processing.

**Highlights:** Draw logic circuit diagrams, Generate Verilog HDL, Perform circuit simulations, Touch-based wiring, AXI bus interface support, JSON import/export, Offline network operation

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Give a tip #1 | $1.99 | one-time |
| Give a tip #2 | $3.99 | one-time |
| Give a tip #3 | $7.99 | one-time |
| Give a tip #4 | $15.99 | one-time |
| Give a tip #5 | $23.99 | one-time |
| Give a tip #6 | $39.99 | one-time |
| Give a tip #7 | $79.99 | one-time |


### WaveCrux

[App page](https://appshunter.io/ios/app/wavecrux/id6787506007)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SchemaHD free?

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

### Is WaveCrux free?

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

### Do SchemaHD or WaveCrux have ads?

Neither SchemaHD nor WaveCrux shows ads.

### Which is updated more often, SchemaHD or WaveCrux?

SchemaHD ships an update every 10 days, and WaveCrux every 10 days. Most recently, SchemaHD was updated on October 24, 2026 and WaveCrux on October 28, 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.*