数独城 vs GrowBrain

数独城是一款面向日常练习的数独。打开就能下，从入门到高难度都能找到适合自己的一局。 四种难度：简单、普通、困难、极难。逐步解锁，按自己的节奏变强。 三种开法： · 今日一局：每天一题，连续完成可累计天数 · 3 分钟一局：碎片时间也能打完 · 限时挑战：自选难度限时完成，越快得分越高 对局中可以笔记、撤销。每天有免费提示；不够时，可用数独币兑换更多提示。 下完的每一局都会留在游戏日历里。点开某一天，能看到局数、胜负、得分和当日评价。积分排行榜和成就用来对照自己的进度。 支持游客体验，也可用邮箱登录，换设备后保留账号进度。无广告。

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/