Comparison

Sudoku Calculator vs 小决策 · Decision Maker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sudoku Calculator

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
Read full description

Stuck on Sudoku? Input the puzzle, click "Calculator" for fast answers. ● Millisecond solving speed ● Stable, accurate, high-performance ● Smart input exclusion, save solved results ● Coming soon: Image auto-recognition for Sudoku input Test data source: Our 'Sudoku All in One' app, 6 major levels, 10,000+ Sudokus. 4 upgraded master-level algorithms, millions of operations. Extreme difficulty solved in single-digit milliseconds. Notably, the previous version using international algorithms took 168,075 ms; 4 upgraded top algorithms to take 4,668 ms—speed increased by at least 36x. Feedback: 283784210@qq.com

About

小决策 · Decision Maker

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
Read full description

独特的设计风格使人耳目一新,在决策引擎里你可以随意的添加新的决策,每个决策可以添加多个选项,还可以设置引擎随机结果数量。功能十分强大,适用于多种场景,总之,发挥你的想象吧!难以做决定,就用决策引擎! 小决策是一个用来帮助你快速做决定的应用。输入你纠结的问题,添加或者导入所有的选项,用转盘来快速决定! 天秤座的你纠结得不要不要的? 「每个选项都有利弊,道理我都懂!」 「没有最好的选择,也没有最坏的选择,我都明白!」 「但就是不知道怎么选!」 既然选哪个都差不多,就让小决定来帮你吧! 这个周末去哪玩?今天晚上吃什么?明天穿什么衣服呢? 朋友聚会玩真心话大冒险?今天晚饭谁来请? 用小决定都可以搞定! A random decision-making engine based on a real physics engine helps you solve the small troubles that are difficult to make decisions. Like who's going to get the takeaway? truth or Dare? Who washes the dishes today and so on. At the same time, you can also use it in work, such as random grouping of personnel and random roll call on the spot. In short, when you are struggling with how to make a choice, how to decide, you might as well try the decision engine gadget, it will help you make a decision. The unique design style is refreshing. In the decision engine, you can add new decisions at will, each decision can add multiple options, and you can also set the number of random results of the engine. The function is very powerful, suitable for a variety of scenarios, in short, use your imagination! If it's hard to make a decision, use the decision engine!

Screenshots

Sudoku Calculator2 screens
小决策 · Decision Maker3 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Sudoku Calculator versus 小决策 · Decision Maker: the parameters behind the verdict, then further details
ParameterSudoku Calculator小决策 · Decision Maker
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 4 months — betterEvery 5 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.011.0 — better
Further details — not scored
Size18 MB26 MB
Age rating4+4+
Developer杨军 朱何均 邓

Customer experience

Sudoku Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

小决策 · Decision Maker

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Sudoku Calculator

One-time1
  • Buy Pro Version$0.99
None

小决策 · Decision Maker

No in-app purchases

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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