# OBS De Wilgenstam vs MathWise

The clearest difference is in-app purchases: OBS De Wilgenstam at none against MathWise's 3. MathWise's advantage is update cadence (every 2 months vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. MathWise sells 3 in-app purchases, starting at $1.99 per month. OBS De Wilgenstam asks for nothing beyond the download.

OBS De Wilgenstam ships an update every 3 months, MathWise every 2 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | OBS De Wilgenstam | MathWise |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 115 MB | 8 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vereniging Ouderraad O.B.S. de Wilgenstam](https://appshunter.io/developer/1449963215) | [Ziya Bal](https://appshunter.io/developer/1045203316) |

## What reviewers say

### OBS De Wilgenstam

[App page](https://appshunter.io/ios/app/obs-de-wilgenstam/id1091522773)

**Features:** macOS Compatibility

**In-app purchases:** none


### MathWise

[App page](https://appshunter.io/ios/app/mathwise-learn-math/id1500016018)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium access | $1.99 | per month |
| Premium access | $7.99 | per 6 months |
| Premium access | $10.99 | per year |


## Frequently asked questions

### Is OBS De Wilgenstam free?

OBS De Wilgenstam is free to download, with no in-app purchases.

### Is MathWise free?

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

### Do OBS De Wilgenstam or MathWise have ads?

Neither OBS De Wilgenstam nor MathWise shows ads.

### Which is updated more often, OBS De Wilgenstam or MathWise?

OBS De Wilgenstam ships an update every 3 months, and MathWise every 2 months. Most recently, OBS De Wilgenstam was updated on October 26, 2026 and MathWise on October 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*