# FpgaLearn vs HDLSim

The clearest difference is update cadence: HDLSim at every 4 days against FpgaLearn's every 3 weeks. HDLSim also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. FpgaLearn sells 1 one-off in-app purchase and HDLSim sells 2 in-app purchases, starting at $2.00 per month. Whichever you choose, the download price is not the number that matters.

FpgaLearn ships an update every 3 weeks, HDLSim every 4 days. Both last shipped on November 13, 2026.

## The numbers

| Metric | FpgaLearn | HDLSim |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 15 MB | 15 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [光浩 李](https://appshunter.io/developer/1576352133) | [Julio Francisco Reyes Gonzalez](https://appshunter.io/developer/6824013496) |

## What reviewers say

### FpgaLearn

[App page](https://appshunter.io/ios/app/fpgalearn/id6787985312)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Full Course | $29.99 | one-time |


### HDLSim

[App page](https://appshunter.io/ios/app/hdlsim/id6824013494)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HDLSim Pro Monthly | $2.00 | per month |
| HDLSim Pro Annual | $20.00 | per year |


## Frequently asked questions

### Is FpgaLearn free?

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

### Is HDLSim free?

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

### Do FpgaLearn or HDLSim have ads?

Neither FpgaLearn nor HDLSim shows ads.

### Which is updated more often, FpgaLearn or HDLSim?

FpgaLearn ships an update every 3 weeks, and HDLSim every 4 days. Most recently, FpgaLearn was updated on November 13, 2026 and HDLSim on November 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.*