Comparison

数独城 vs GrowBrain

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

Head to head
About

数独城

Features
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数独城是一款专为数独爱好者设计的手机应用程序,它提供了创新且丰富的游戏体验。在传统的数字模式之外,游戏还推出了独特的颜色模式和图片模式,为玩家带来了全新的解谜方式。颜色模式下,玩家不再面对冰冷的数字,而是通过匹配色彩来解决谜题;而在图片模式中,更是将视觉享受与逻辑推理完美结合,使游戏过程充满乐趣。这两种创新模式需要通过内购解锁,为寻求更多挑战的玩家提供了额外的选择。 游戏提供四种不同的难度等级——简单、普通、困难和挑战,无论你是初学者还是经验丰富的数独高手,都能找到适合自己的级别。每局游戏结束后,系统会根据玩家所选的难度、模式以及完成的时间给予评分,这不仅增加了游戏的竞争性,也激励着玩家不断提升自己的技巧。 值得一提的是,数独城没有烦人的广告打扰,确保了流畅无阻的游戏体验。此外,游戏内置的排行榜功能可以让玩家随时查看自己在全球或好友圈中的排名情况,而历史记录则方便玩家回顾自己的进步轨迹。未来,开发团队还将引入更多样化的奖杯系统,进一步增强游戏的可玩性和收藏价值。对于喜爱数独的玩家来说,数独城无疑是一款值得下载并投入时间的应用程序。

About

GrowBrain

Features
Read full description

Sounds familiar? “Mom, wait… I’m almost done!” And just like that, 40 minutes of TikTok, YouTube, and games go by. Homework? Once again — postponed. You’re frustrated. Your child is upset. Another conflict... GrowBrain offers a peaceful solution: development first — then entertainment. The app blocks YouTube, TikTok, games, and other apps until your child completes a short brain-training task. Clear rules. No yelling. No constant reminders. Science-based games train: - Attention and focus - Memory and reasoning - Cognitive flexibility and self-control GrowBrain adjusts difficulty levels to keep your child engaged and help form healthy digital habits. Safety first: - No ads - No external links - No in-app purchases - No data collection - Works offline Also great for adults — train your brain together with your child. Feel calmer. Think sharper. Grow stronger. GrowBrain — we don’t promise magic. But we believe in the power of habits that can change lives. Please note: GrowBrain is a subscription-based app. A subscription is required to access features and content. Try GrowBrain today — and see the first changes in just one month. (Subscription required for access) This app uses Apple’s standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

数独城4 screens
GrowBrain4 screens

Verdict

The call

数独城 and GrowBrain are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. 数独城 sells 5 one-off in-app purchases and GrowBrain sells 6 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

数独城 ships an update every 9 days, GrowBrain fortnightly. The most recent releases landed on August 25, 2026 and August 18, 2026 respectively.

ScorecardNo meaningful differences
数独城 versus GrowBrain: the parameters behind the verdict, then further details
Parameter数独城GrowBrain
PriceFreeFree
Update frequencyEvery 9 days — betterFortnightly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size28 MB78 MB
Age rating4+4+
Developer正旋 金Roman Shulha

In-app purchases

5 purchases

数独城

One-time5
  • 数独币100枚$0.99
  • Unlock all levels$0.99
  • 解锁模式avatar$0.99
Show 2 more
  • 解锁模式color$0.99
  • 100 correction opportunities$1.99
6 purchases

GrowBrain

Subscriptions6
  • 1-month subscription3 Days trial$5.991 Month
  • 1-month subscription$5.991 Month
  • 6-months subscription$29.996 Months
Show 3 more
  • 6-months subscription6 Months trial$29.996 Months
  • 1-year subscription$47.991 Year
  • 1-year subscription1 Year trial$49.991 Year

Questions

Is 数独城 free?
数独城 is free to download, with in-app purchases available.
Is GrowBrain free?
GrowBrain is free to download, with in-app purchases available.
Do 数独城 or GrowBrain have ads?
Neither 数独城 nor GrowBrain shows ads.
Which is updated more often, 数独城 or GrowBrain?
数独城 ships an update every 9 days, and GrowBrain fortnightly. Most recently, 数独城 was updated on August 25, 2026 and GrowBrain on August 18, 2026.

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