Comparison

NumbBrain vs SparkRing

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

Head to head
About

NumbBrain

Features
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Reduce screen time without deleting the apps you still need. NumbBrain helps you block distracting apps and app categories during work, study, reading, bedtime, or any focus routine you want to protect. Use NumbBrain to: - Block selected apps and app categories - Create automatic focus schedules - Set rules for weekdays, weekends, nights, or custom routines - Unlock only when you really need a short break - Review screen time stats and understand what pulls your attention NumbBrain is designed for people who want stronger app limits, fewer distractions, and a calmer phone. In-App Purchase: Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. You can manage and cancel subscriptions in your App Store account settings. Email jiangdi0924@gmail.com Terms: https://jdi-app.notion.site/Terms-5a99ba5bf942491b8299c07221bb5f7b Privacy: https://jdi-app.notion.site/Privacy-Policy-cdb1be6b87f64c06b7dbea6ffbbad83f

About

SparkRing

Features
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不再纠结该信哪个 AI。 SparkRing 把同一个问题同时抛给多个大模型,让它们同台竞技,你轻松择优而取。 —— 四大核心功能 —— 【多问几家】货比三家不吃亏 同一个问题并排发给多个模型,答案好坏一目了然。支持图片提问,还能让模型互评打分。不用在多个 app 之间切来切去。 【深度对质】让 AI 们吵一架 三阶段结构化对质:独立表态 → 交叉质疑 → 综合裁定。适合做决策前的压力测试,把分歧逐条拆解看清楚。 【锦囊参谋】你的私人董事会 12 位风格迥异的虚拟参谋,涵盖战略、风险、落地、商业、用户、执行六大视角。支持广播、辩论、收敛三种议事模式,一个问题看到全方位的思维碰撞。 【创意实验室】玩转 AI 的新方式 五种互动玩法,不只是聊天: · 每日论战 — 热门话题辩论,训练批判思维 · 海龟汤 — 经典推理游戏,通过提问揭开真相 · 假如模拟器 — 设定奇妙场景,看 AI 如何发挥 · 剧情共演 — 与 AI 实时互动,共同推进故事 · 多重人生 — 多视角叙事,还原事件全貌 —— 隐私与安全 —— · API Key 使用 AES-256-GCM 加密,本地存储 · 对话数据留在你的设备上,不经过第三方服务器 · 无广告、无追踪、无社交 —— 两种使用方式 —— · 先试试看:内置体验通道,无需配置,打开即用 · 连接 API:接入你自己的 API Key,解锁全部能力 支持 DeepSeek、阿里通义、Groq、OpenRouter 等主流模型通道,也可添加任意兼容接口。

Screenshots

NumbBrain4 screens
SparkRing4 screens

Verdict

The call

The clearest difference is in-app purchases: SparkRing at none against NumbBrain's 3. SparkRing also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price 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. NumbBrain sells 3 in-app purchases, starting at $0.99 per month. SparkRing asks for nothing beyond the download.

Scorecard3 real differences · 3 level
NumbBrain versus SparkRing: the parameters behind the verdict, then further details
ParameterNumbBrainSparkRing
PriceFreeFree
Update frequencyEvery 4 months—
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size14 MB6 MB
Age rating4+12+
Developer笛 姜鑫 宋

In-app purchases

3 purchases

NumbBrain

Subscriptions2
  • Monthly Premium$0.991 Month
  • Annual Premium14 Days trial$2.991 Year
One-time1
  • Lifetime Premium$5.99
None

SparkRing

No in-app purchases

Questions

Is NumbBrain free?
NumbBrain is free to download, with in-app purchases available.
Is SparkRing free?
SparkRing is free to download, with no in-app purchases.
Do NumbBrain or SparkRing have ads?
Neither NumbBrain nor SparkRing shows ads.

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