Comparison

NumbBrain vs 彼岩

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

彼岩

Features
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彼岩是一款面向工作和学习场景的智能助手客户端。你可以在一个简洁的聊天界面中进行文本问答、写作润色、资料整理、代码辅助、图片理解、文档阅读和语音输入。应用通过你配置的服务接口处理请求,本身不训练、不部署 AI 模型,适合希望更高效使用多模型能力的用户。 主要功能: - 4 位 PIN 码 / Face ID / Touch ID 解锁 - 多窗口,可设置最多 5 个额外窗口,保护不同场景下的隐私 - 流式聊天、智能上下文管理 - 支持图片、PDF、CSV、HTML 等附件 - 优雅的模型切换、服务商配置导入 - 会话历史、置顶对话、深色模式和中英文界面 - 自动联网搜索 - 语音输入(在当前服务商支持时可用) - 服务商余额显示(在当前服务商支持时可用) 适用场景: - 整理资料、提炼要点 - 起草、改写和翻译文本 - 阅读文档并生成摘要 - 分析图片内容 - 辅助代码理解和问题排查 隐私与数据:你主动输入或上传的内容会发送至你配置的服务接口用于生成结果。请不要上传你无权处理的敏感资料。 欢迎加入彼岩官方用户群:1016708251

Screenshots

NumbBrain4 screens
彼岩4 screens

Verdict

The call

The clearest difference is price: NumbBrain at Free against 彼岩's $1.99. 彼岩's advantage is in-app purchases (none vs 3) and update cadence (weekly vs fortnightly). On ads, device support and iOS requirement 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

NumbBrain is free to download; 彼岩 costs $1.99 up front. NumbBrain sells 3 in-app purchases, starting at $1.99 per month. 彼岩 asks for nothing beyond the download.

UpkeepUpdate frequency

NumbBrain ships an update fortnightly, 彼岩 weekly. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 3 level
NumbBrain versus 彼岩: the parameters behind the verdict, then further details
ParameterNumbBrain彼岩
PriceFree — better$1.99
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPad — better
Requires iOS17.0 — better18.0
Further details — not scored
Size14 MB51 MB
Age rating4+12+
Developer笛 姜Lilyn Dynamics

In-app purchases

3 purchases

NumbBrain

Subscriptions2
  • Monthly Premium$1.991 Month
  • Annual Premium3 Days trial$2.991 Year
One-time1
  • Lifetime Premium$5.99
None

彼岩

No in-app purchases

Questions

Is NumbBrain free?
NumbBrain is free to download, with in-app purchases available.
Is 彼岩 free?
彼岩 costs $1.99, with no in-app purchases.
Do NumbBrain or 彼岩 have ads?
Neither NumbBrain nor 彼岩 shows ads.
Which is updated more often, NumbBrain or 彼岩?
NumbBrain ships an update fortnightly, and 彼岩 weekly. Most recently, NumbBrain was updated on November 12, 2026 and 彼岩 on October 31, 2026.

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