# Linear Equations Calculator vs Sudoku Solver Realtime Camera

The clearest difference is review sentiment: Linear Equations Calculator at 75% against Sudoku Solver Realtime Camera's 19%. Linear Equations Calculator also leads on rating (4.1 vs 3.4) and ads (none vs shown). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. Linear Equations Calculator sells 8 one-off in-app purchases and Sudoku Solver Realtime Camera sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Linear Equations Calculator holds the better App Store score, 4.1 against 3.4. Both are backed by a comparable volume of ratings — 28 and 43 respectively. Written reviews point the same way: 75% of Linear Equations Calculator's written reviews are positive against 19% of Sudoku Solver Realtime Camera's.

Linear Equations Calculator ships an update every 3 weeks, Sudoku Solver Realtime Camera every 2 months. The most recent releases landed on September 14, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Linear Equations Calculator | Sudoku Solver Realtime Camera |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (28 ratings)](https://appshunter.io/ios/app/linear-equations-calculator/id1246761828/reviews)** | [3.4 (43 ratings)](https://appshunter.io/ios/app/sudoku-solver-realtime-camera/id1608023307/reviews) |
| Number of ratings | 28 | **43** |
| Positive reviews | **75.0% of reviews** | 19.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 179 MB | 33 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) | [小健 赵](https://appshunter.io/developer/1521832312) |

## What reviewers say

### Linear Equations Calculator

[App page](https://appshunter.io/ios/app/linear-equations-calculator/id1246761828)

This educational app solves linear equations with detailed step-by-step solutions and visual plots. It supports various input methods, including points and slopes, and saves all calculations in a history log for easy access and sharing.

**Highlights:** Step-by-step linear equation solving, Graphical plotting of results, Calculation history log, Supports various input methods (points, slope), Decimal and fraction input support, Solution sharing functionality

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| +30 User Tokens | $0.29 | one-time |
| +1 Convenience Token / 6h, max. +2 | $0.59 | one-time |
| +2 Convenience Tokens / 6h, max. +4 | $0.99 | one-time |
| +150 User Tokens | $0.99 | one-time |
| +300 User Tokens | $1.49 | one-time |
| +4 Convenience Tokens / 6h, max. +8 | $1.59 | one-time |
| Remove Ads | $1.99 | one-time |
| Lifetime Access | $1.99 | one-time |


### Sudoku Solver Realtime Camera

[App page](https://appshunter.io/ios/app/sudoku-solver-realtime-camera/id1608023307)

Instantly solve Sudoku puzzles using your device's camera or by selecting a photo. It identifies invalid boards, provides hints, and checks your final solution. Supports various Sudoku sizes and offers different solving modes.

**Highlights:** Real-time camera solving, Photo import solving, Error checking for invalid boards, Hinting for next move, Supports 9x9 and 4x4 boards, Handwritten number recognition

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Subscription | $1.99 | per 7 days |
| Monthly Premium Subscription | $3.99 | per month |
| Annual Premium Subscription | $17.99 | per year |
| Remove ads. | $39.99 | one-time |


## Frequently asked questions

### Is Linear Equations Calculator free?

Linear Equations Calculator is free to download, with in-app purchases available.

### Is Sudoku Solver Realtime Camera free?

Sudoku Solver Realtime Camera is free to download, with in-app purchases available.

### Which has better reviews, Linear Equations Calculator or Sudoku Solver Realtime Camera?

Linear Equations Calculator is rated higher. Linear Equations Calculator averages 4.1 out of 5 from 28 ratings, while Sudoku Solver Realtime Camera averages 3.4 from 43 ratings.

### Do Linear Equations Calculator or Sudoku Solver Realtime Camera have ads?

Sudoku Solver Realtime Camera shows ads; Linear Equations Calculator does not.

### Which is updated more often, Linear Equations Calculator or Sudoku Solver Realtime Camera?

Linear Equations Calculator ships an update every 3 weeks, and Sudoku Solver Realtime Camera every 2 months. Most recently, Linear Equations Calculator was updated on September 14, 2026 and Sudoku Solver Realtime Camera on September 24, 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.*