# Sub Zero vs Sudoku Scan & Solver

The clearest difference is review sentiment: Sudoku Scan & Solver at 100% against Sub Zero's 0%. Sudoku Scan & Solver also leads on rating (5.0 vs 1.0). Sub Zero's advantage is ads (none vs shown) and update cadence (daily vs weekly). On price, ratings volume, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sudoku Scan & Solver holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 0% of Sub Zero's written reviews are positive against 100% of Sudoku Scan & Solver's.

Sub Zero ships an update daily, Sudoku Scan & Solver weekly. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Sub Zero | Sudoku Scan & Solver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/sub-zero-the-game/id6736951257/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sudoku-scan-and-solver/id6749896084/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Weekly |
| Monetization | **Free** | Ad-supported |
| Size | 360 MB | 247 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peter Sandkvist](https://appshunter.io/developer/1754924140) | [Tomoaki Okubo](https://appshunter.io/developer/1830995076) |

## What reviewers say

### Sub Zero

[App page](https://appshunter.io/ios/app/sub-zero-the-game/id6736951257)

Explore a collapsing deep-sea base as a lone survivor. Solve intricate puzzles and uncover secrets to save humanity from extinction. Your choices will determine the fate of everyone.

**Highlights:** Retro-futuristic puzzle adventure, Deep-sea base exploration, Intricate puzzle solving, Uncover secrets of Project Abyssus 2, Story-driven choices, AI companion guidance

**Features:** macOS Compatibility

**In-app purchases:** none


### Sudoku Scan & Solver

[App page](https://appshunter.io/ios/app/sudoku-scan-and-solver/id6749896084)

Effortlessly solve any Sudoku puzzle by scanning or uploading an image. Get instant solutions, check for mistakes, and edit the board with an intuitive interface suitable for all skill levels.

**Highlights:** Scan Sudoku puzzles from photos, Instant puzzle solving, Mistake highlighting, Board editing, Intuitive interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sub Zero free?

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

### Is Sudoku Scan & Solver free?

Sudoku Scan & Solver is free to download, with no in-app purchases.

### Which has better reviews, Sub Zero or Sudoku Scan & Solver?

Sudoku Scan & Solver is rated higher. Sub Zero averages 1.0 out of 5 from 1 ratings, while Sudoku Scan & Solver averages 5.0 from 1 ratings.

### Do Sub Zero or Sudoku Scan & Solver have ads?

Sudoku Scan & Solver shows ads; Sub Zero does not.

### Which is updated more often, Sub Zero or Sudoku Scan & Solver?

Sub Zero ships an update daily, and Sudoku Scan & Solver weekly. Most recently, Sub Zero was updated on November 4, 2026 and Sudoku Scan & Solver on November 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*