# Physics Answers vs Sudoku Master Lt

The clearest difference is in-app purchases: Sudoku Master Lt at none against Physics Answers's 2. Physics Answers's advantage is ads (none vs shown) and update cadence (every 3 months vs every 10 months). On price and device support there is nothing between them.

Both are free to download. Physics Answers sells 2 in-app purchases, starting at $9.99 per month. Sudoku Master Lt asks for nothing beyond the download.

Physics Answers ships an update every 3 months, Sudoku Master Lt every 10 months. The most recent releases landed on September 9, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Physics Answers | Sudoku Master Lt |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/sudoku-master-lt/id1629920362/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 10 months |
| Monetization | — | Ad-supported |
| Size | 111 MB | 8 MB |
| Requires iOS | **11.4** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Biobrain Learning Pty Ltd](https://appshunter.io/developer/1371680532) | [Optimization Lab LLC](https://appshunter.io/developer/1082932084) |

## What reviewers say

### Physics Answers

[App page](https://appshunter.io/ios/app/physics-answers-ap-physics/id1510694550)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Content | $9.99 | per month |
| All Content | $49.99 | per year |


### Sudoku Master Lt

[App page](https://appshunter.io/ios/app/sudoku-master-lt/id1629920362)

Enjoy an endless supply of Sudoku puzzles with 9 difficulty levels. Save your progress, track your stats, and challenge friends in battle mode. Perfect for travel or passing time.

**Highlights:** Unlimited Sudoku puzzles, 9 difficulty levels, Save and resume games, Track playtime and mistakes, Battle mode for multiplayer, Offline play

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Physics Answers free?

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

### Is Sudoku Master Lt free?

Sudoku Master Lt is free to download, with no in-app purchases.

### Do Physics Answers or Sudoku Master Lt have ads?

Sudoku Master Lt shows ads; Physics Answers does not.

### Which is updated more often, Physics Answers or Sudoku Master Lt?

Physics Answers ships an update every 3 months, and Sudoku Master Lt every 10 months. Most recently, Physics Answers was updated on September 9, 2026 and Sudoku Master Lt on September 13, 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.*