Comparison

AI CAD vs 知我 AI

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

Head to head
About

AI CAD

Features
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Turn an idea into an editable CAD model using the way you naturally work: take a photo, sketch a concept, or describe what you need in plain language. AI CAD helps transform your input into practical 3D geometry that you can inspect, refine, and share. DESIGN WITH AI • Start from text, a reference photo, or a hand-drawn sketch. • Refine dimensions, features, and shapes through natural-language instructions. • Continue iterating without rebuilding the model from scratch. INSPECT YOUR MODEL • Explore your design in an interactive 3D workspace. • Switch between front, top, and side views for clearer technical inspection. • Work comfortably across both iPhone and iPad. PREPARE FOR REAL WORK • Create designs for engineering concepts, prototyping, manufacturing, and 3D printing. • Share CAD files directly with teammates or move them into your existing workflow. • Use a multilingual interface designed for global engineering teams. From the first idea to the next revision, AI CAD makes computer-aided design more direct, visual, and conversational.

About

知我 AI

Features
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知我 AI 是为个人使用设计的长期记忆系统。 由 DeepSeek V4 提供模型能力,知我负责长期记忆与连续理解:不只回答当下问题,还会把真正重要的背景带到下一次交流。 它适合想让 AI 长期理解自己的人:你的偏好、目标、项目、原则、重要关系和近期状态,会逐步沉淀成可查看、可纠错、可忘记的长期画像。下一次交流时,知我会引用相关记忆,不用每次从零解释。 主要功能: - 记忆大脑首页:打开就能看到最近新增理解、反复得到验证的记忆和正在跟进的事。 - 自动形成长期画像:从对话中提炼偏好、事实、目标、项目原则、重要事件和后续动作。 - 记忆可回看、可纠错、可忘记:每条记忆都能查看来源摘录,发现不准确时可以直接修改、停用或删除。 - 回答会解释引用:后续提问时,知我只引用少量高价值记忆,并显示参考了哪些记忆。 - URL 资料入口:粘贴网页链接后,知我会读取资料、生成摘要并标注来源。网页内容会被视为外部资料,不会默认变成你的个人事实。 - 最近理解与本地导出:在需要时生成今日理解更新,或导出 Markdown 进行备份和迁移。 知我 AI 的核心不是普通聊天、记录或复盘,而是长期记忆与连续理解。它会尽量低打扰、低成本、可恢复、可纠错地帮助 AI 越来越理解你。 注意: - 当前版本不提供账号系统或多设备同步。 - 记忆主要保存在本机,删除 App 或清除数据可能导致本地记忆丢失。 - 为生成回答、摘要和长期记忆整理,用户输入、URL 内容和相关记忆会发送到后端 AI 代理及模型服务处理。 - 当前版本不做高权限 Agent,不替你自动执行外部操作,不做录音或 ASR 套壳。 - 知我 AI 不提供医疗、法律、金融等专业建议。

Screenshots

AI CAD4 screens
知我 AI4 screens

Verdict

The call

The clearest difference is in-app purchases: 知我 AI at none against AI CAD's 4. AI CAD's advantage is update cadence (weekly vs every 2 weeks) and iOS requirement (13.0 vs 15.0). On price, ads and device support 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. AI CAD sells 4 one-off in-app purchases. 知我 AI asks for nothing beyond the download.

UpkeepUpdate frequency

AI CAD ships an update weekly, 知我 AI every 2 weeks. Both last shipped on October 8, 2026.

Scorecard3 real differences · 3 level
AI CAD versus 知我 AI: the parameters behind the verdict, then further details
ParameterAI CAD知我 AI
PriceFreeFree
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size49 MB3 MB
Age rating4+4+
DeveloperHubei Ai Qiang Artificial Intelligence Technology Co. Ltd杰栋 何

In-app purchases

4 purchases

AI CAD

One-time4
  • 100 AI CAD Credits$1.99
  • 330 AI CAD Credits$5.99
  • 600 AI CAD Credits$9.99
Show 1 more
  • 1300 AI CAD Credits$19.99
None

知我 AI

No in-app purchases

Questions

Is AI CAD free?
AI CAD is free to download, with in-app purchases available.
Is 知我 AI free?
知我 AI is free to download, with no in-app purchases.
Do AI CAD or 知我 AI have ads?
Neither AI CAD nor 知我 AI shows ads.
Which is updated more often, AI CAD or 知我 AI?
AI CAD ships an update weekly, and 知我 AI every 2 weeks. Most recently, AI CAD was updated on October 8, 2026 and 知我 AI on October 8, 2026.

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