# PROODOS vs Physics Zen

The clearest difference is in-app purchases: PROODOS at none against Physics Zen's 6. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Physics Zen sells 6 in-app purchases, starting at $3.99 per 7 days. PROODOS asks for nothing beyond the download.

PROODOS ships an update every 2 days, Physics Zen every 3 days. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | PROODOS | Physics Zen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/physics-zen-learn-and-practice/id6808595963/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 days |
| Monetization | — | Free with in-app purchases |
| Size | 28 MB | 86 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [S COURS ACADEMY](https://appshunter.io/developer/1842307065) | [Ivan Terekhin](https://appshunter.io/developer/888645337) |

## What reviewers say

### PROODOS

[App page](https://appshunter.io/ios/app/proodos-elite-and-concours/id6800853229)

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

**In-app purchases:** none


### Physics Zen

[App page](https://appshunter.io/ios/app/physics-zen-learn-and-practice/id6808595963)

This app provides focused, repeatable physics practice with generated problems and instant feedback. It covers 66 skills across 21 topics and offers exam preparation for various international curricula. Access theory and worked solutions directly within practice sessions.

**Highlights:** Generated physics problems, Instant answer checking, On-demand theory and solutions, Mastery progression system, Mistake journal for review, Visual aids for concepts, Offline functionality

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Physics Zen Weekly | $3.99 | per 7 days |
| Physics Zen Monthly | $6.99 | per month |
| Physics Zen Annual | $29.99 | per year |
| Physics Zen Lifetime | $24.99 | one-time |
| Physics Zen Lifetime | $29.99 | one-time |
| Physics Zen Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is PROODOS free?

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

### Is Physics Zen free?

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

### Do PROODOS or Physics Zen have ads?

Neither PROODOS nor Physics Zen shows ads.

### Which is updated more often, PROODOS or Physics Zen?

PROODOS ships an update every 2 days, and Physics Zen every 3 days. Most recently, PROODOS was updated on November 6, 2026 and Physics Zen on November 8, 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.*