# Muon Tracker vs Flashcard Blocker

The clearest difference is price: Flashcard Blocker at Free against Muon Tracker's $1.99. Flashcard Blocker also leads on ratings volume (4 vs 1). Muon Tracker's advantage is in-app purchases (none vs 3) and iOS requirement (16.6 vs 18.0). On rating, ads and device support there is nothing between them.

Flashcard Blocker is free to download; Muon Tracker costs $1.99 up front. Flashcard Blocker sells 3 in-app purchases, starting at $4.99 per month. Muon Tracker asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Muon Tracker against 5.0 for Flashcard Blocker. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

## The numbers

| Metric | Muon Tracker | Flashcard Blocker |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/muon-tracker/id6745190290/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/flashcard-blocker-learnscreen/id6759922571/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | Paid | **Freemium** |
| Size | 1 MB | 53 MB |
| Requires iOS | **16.6** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Arpacore B.V.](https://appshunter.io/developer/1441928570) | [Roman Grunin](https://appshunter.io/developer/1696627836) |

## What reviewers say

### Muon Tracker

[App page](https://appshunter.io/ios/app/muon-tracker/id6745190290)

Simulates the detection of high-energy muons from cosmic rays, visualizing their paths and energy in real-time. Explore particle physics and cosmic radiation with location-based data and exportable logs.

**Highlights:** Simulates cosmic muon detection, Visualizes muon tracks in 3D, Real-time rate and flux display, Location-based data and altitude adjustment, Exportable event logs (CSV), Offline functionality

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

**In-app purchases:** none


### Flashcard Blocker

[App page](https://appshunter.io/ios/app/flashcard-blocker-learnscreen/id6759922571)

Transform idle screen time into vocabulary learning opportunities. This app blocks distracting apps, replacing your urge to scroll with educational flashcards. Learn new words passively throughout the day without dedicated study sessions.

**Highlights:** Smart app blocker for social media and video apps, Vocabulary flashcards on every phone unlock, Spaced repetition learning algorithm, 1,080+ curated words or custom lists, Streak tracking for daily learning habits, Focus and Dumb Phone modes, 100% offline and private

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO - Monthly | $4.99 | per month |
| PRO - annual | $19.99 | per year |
| PRO - Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Muon Tracker free?

Muon Tracker costs $1.99, with no in-app purchases.

### Is Flashcard Blocker free?

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

### Which has better reviews, Muon Tracker or Flashcard Blocker?

Muon Tracker and Flashcard Blocker are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.

### Do Muon Tracker or Flashcard Blocker have ads?

Neither Muon Tracker nor Flashcard Blocker shows ads.

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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.*