# Problem solver vs WhyNot Online Learning

The clearest difference is ads: WhyNot Online Learning at none against Problem solver's shown. WhyNot Online Learning also leads on update cadence (every 3 days vs every 6 months). Problem solver's advantage is iOS requirement (8.0 vs 11.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Problem solver ships an update every 6 months, WhyNot Online Learning every 3 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Problem solver | WhyNot Online Learning |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 3 days** |
| Size | 10 MB | 95 MB |
| Requires iOS | **8.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Fabio Giuliani](https://appshunter.io/developer/1333671865) | [AMIR ELJURDI](https://appshunter.io/developer/1680419165) |

## What reviewers say

### Problem solver

[App page](https://appshunter.io/ios/app/problem-solver-mechanics/id1435700320)

**Features:** macOS Compatibility

**In-app purchases:** none


### WhyNot Online Learning

[App page](https://appshunter.io/ios/app/whynot-online-learning/id6447142579)

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

**In-app purchases:** none


## Frequently asked questions

### Is Problem solver free?

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

### Is WhyNot Online Learning free?

WhyNot Online Learning is free to download, with no in-app purchases.

### Do Problem solver or WhyNot Online Learning have ads?

Problem solver shows ads; WhyNot Online Learning does not.

### Which is updated more often, Problem solver or WhyNot Online Learning?

Problem solver ships an update every 6 months, and WhyNot Online Learning every 3 days. Most recently, Problem solver was updated on November 2, 2026 and WhyNot Online Learning on November 3, 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.*