# HDLSim vs MathBench

HDLSim and MathBench are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

HDLSim ships an update every 4 days, MathBench weekly. Both last shipped on November 13, 2026.

## The numbers

| Metric | HDLSim | MathBench |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Weekly |
| Size | 15 MB | 7 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Julio Francisco Reyes Gonzalez](https://appshunter.io/developer/6824013496) | [献慧 陈](https://appshunter.io/developer/1896370005) |

## What reviewers say

### 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 |


### MathBench

[App page](https://appshunter.io/ios/app/mathbench-equation-solver/id6824338641)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is HDLSim free?

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

### Is MathBench free?

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

### Do HDLSim or MathBench have ads?

Neither HDLSim nor MathBench shows ads.

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

HDLSim ships an update every 4 days, and MathBench weekly. Most recently, HDLSim was updated on November 13, 2026 and MathBench 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.*