# Propaganda Detector vs LogicBrain

The clearest difference is in-app purchases: Propaganda Detector at none against LogicBrain's 3. Propaganda Detector also leads on update cadence (every 2 weeks vs every 5 weeks). LogicBrain's advantage is iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. LogicBrain sells 3 in-app purchases, starting at $12.99 per month. Propaganda Detector asks for nothing beyond the download.

Propaganda Detector ships an update every 2 weeks, LogicBrain every 5 weeks. The most recent releases landed on September 23, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Propaganda Detector | LogicBrain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Size | 3 MB | 9 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Anatolii Ostapenko](https://appshunter.io/developer/1752115602) | [Phu Ho](https://appshunter.io/developer/380467843) |

## What reviewers say

### Propaganda Detector

[App page](https://appshunter.io/ios/app/propaganda-detector/id6759523181)

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

**In-app purchases:** none


### LogicBrain

[App page](https://appshunter.io/ios/app/logicbrain-logic-training/id6789635234)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LogicBrain Pro Monthly | $12.99 | per month |
| LogicBrain Pro Annual | $59.99 | per year |
| LogicBrain Pro Lifetime | $149.99 | one-time |


## Frequently asked questions

### Is Propaganda Detector free?

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

### Is LogicBrain free?

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

### Do Propaganda Detector or LogicBrain have ads?

Neither Propaganda Detector nor LogicBrain shows ads.

### Which is updated more often, Propaganda Detector or LogicBrain?

Propaganda Detector ships an update every 2 weeks, and LogicBrain every 5 weeks. Most recently, Propaganda Detector was updated on September 23, 2026 and LogicBrain on September 12, 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.*