# Sudoku Calculator vs 小决策 · Decision Maker

The clearest difference is in-app purchases: 小决策 · Decision Maker at none against Sudoku Calculator's 1. 小决策 · Decision Maker also leads on iOS requirement (11.0 vs 13.0). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Sudoku Calculator sells 1 one-off in-app purchase. 小决策 · Decision Maker asks for nothing beyond the download.

Sudoku Calculator ships an update every 4 months, 小决策 · Decision Maker every 5 months. The most recent releases landed on October 28, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Sudoku Calculator | 小决策 · Decision Maker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sudoku-calculator-ms-speed/id965517565/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 18 MB | 26 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [杨军 朱](https://appshunter.io/developer/564474259) | [何均 邓](https://appshunter.io/developer/1621073530) |

## What reviewers say

### Sudoku Calculator

[App page](https://appshunter.io/ios/app/sudoku-calculator-ms-speed/id965517565)

This utility app solves Sudoku puzzles instantly using advanced algorithms. It offers high-performance, accurate solutions and saves your progress. Future updates will include image recognition for easier puzzle input.

**Highlights:** Instant Sudoku solving, Millisecond solving speed, Accurate and stable performance, Smart input exclusion, Save solved puzzles, AI-powered algorithms

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Pro Version | $0.99 | one-time |


### 小决策 · Decision Maker

[App page](https://appshunter.io/ios/app/decision-maker/id1635939007)

This app helps you make quick decisions by inputting your dilemma and options. It uses a random decision-making engine with a unique design to help you choose between options for everyday situations or even work-related tasks.

**Highlights:** Random decision engine, Add custom decisions, Multiple options per decision, Set number of random results, Unique design style, Suitable for various scenarios

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

**In-app purchases:** none


## Frequently asked questions

### Is Sudoku Calculator free?

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

### Is 小决策 · Decision Maker free?

小决策 · Decision Maker is free to download, with no in-app purchases.

### Do Sudoku Calculator or 小决策 · Decision Maker have ads?

Neither Sudoku Calculator nor 小决策 · Decision Maker shows ads.

### Which is updated more often, Sudoku Calculator or 小决策 · Decision Maker?

Sudoku Calculator ships an update every 4 months, and 小决策 · Decision Maker every 5 months. Most recently, Sudoku Calculator was updated on October 28, 2026 and 小决策 · Decision Maker on October 20, 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.*