# PessTech vs WhyBrain

PessTech and WhyBrain 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. Neither carries in-app purchases, so what you see is what you pay.

PessTech ships an update every 2 weeks, WhyBrain every 3 weeks. The most recent releases landed on October 9, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | PessTech | WhyBrain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 107 MB | 22 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PessTechnologies](https://appshunter.io/developer/945694270) | [1Control](https://appshunter.io/developer/1044212789) |

## What reviewers say

### PessTech

[App page](https://appshunter.io/ios/app/pesstech/id6498715323)

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

**In-app purchases:** none


### WhyBrain

[App page](https://appshunter.io/ios/app/whybrain/id6747509303)

**In-app purchases:** none


## Frequently asked questions

### Is PessTech free?

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

### Is WhyBrain free?

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

### Do PessTech or WhyBrain have ads?

Neither PessTech nor WhyBrain shows ads.

### Which is updated more often, PessTech or WhyBrain?

PessTech ships an update every 2 weeks, and WhyBrain every 3 weeks. Most recently, PessTech was updated on October 9, 2026 and WhyBrain on October 4, 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.*