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Comparison

KnowKnow AI vs 智慧護膝3+3

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

Head to head
KnowKnow AI
KnowKnow AI

Your AI Nutrition Buddy

Free
💪 Health & Fitness
★ 3.02 ratingsView app →
智慧護膝3+3
智慧護膝3+3
Free
💪 Health & Fitness
No ratingsView app →
About

KnowKnow AI

Effortlessly track your nutrition by simply snapping a photo of your food. This AI-powered tool provides instant analysis of calorie and macronutrient content, helping you understand your dietary intake.

Highlights
  • AI-powered food analysis
  • Instant calorie and macro breakdown
  • Photo-based tracking
  • Nutrition insights
Features
Read full description

AI-powered nutrition tracker — snap a photo, get instant calorie & macro analysis. Terms of Use: https://knowknow.app/terms Privacy Policy: https://knowknow.app/privacy

About

智慧護膝3+3

Features
Read full description

「智慧護膝3+3」應用程式結合生活3原則與護膝3運動概念，透過個人化數據紀錄與即時回饋機制，提供膝部使用相關的資訊與互動體驗。使用者可依循系統提示，逐步熟悉不同動作情境下的膝部使用方式，並在持續操作與回饋中調整自身動作表現與使用習慣。 本應用程式著重於日常使用情境的觀察與回饋，透過長期紀錄與數據呈現，協助使用者理解自身動作模式，並培養更一致與穩定的使用方式，作為日常活動中的輔助工具。

Screenshots

KnowKnow AI4 screens
智慧護膝3+34 screens

Verdict

The call

The clearest difference is in-app purchases: 智慧護膝3+3 at none against KnowKnow AI's 4. 智慧護膝3+3 also leads on iOS requirement (13.0 vs 16.4). On price, update cadence, 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. KnowKnow AI sells 4 in-app purchases, starting at $9.99 per month. 智慧護膝3+3 asks for nothing beyond the download.

UpkeepUpdate frequency

KnowKnow AI ships an update every 3 weeks, 智慧護膝3+3 every 2 weeks. The most recent releases landed on September 16, 2026 and September 28, 2026 respectively.

Scorecard2 real differences · 8 level
KnowKnow AI versus 智慧護膝3+3: the parameters behind the verdict, then further details
ParameterKnowKnow AI智慧護膝3+3
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhoneiPhone, iPod — better
Requires iOS16.413.0 — better
Further details — not scored
Size104 MB191 MB
Age rating4+4+
DeveloperRETOWER TECH PTE. LTD.智遊科技服務股份有限公司

In-app purchases

4 purchases

KnowKnow AI

Subscriptions4
  • KnowKnow Plus$9.991 Month
  • KnowKnow Pro$14.991 Month
  • KnowKnow Plus Yearly$113.991 Year
Show 1 more
  • KnowKnow Pro Yearly$178.991 Year
None

智慧護膝3+3

No in-app purchases

Questions

Is KnowKnow AI free?
KnowKnow AI is free to download, with in-app purchases available.
Is 智慧護膝3+3 free?
智慧護膝3+3 is free to download, with no in-app purchases.
Do KnowKnow AI or 智慧護膝3+3 have ads?
Neither KnowKnow AI nor 智慧護膝3+3 shows ads.
Which is updated more often, KnowKnow AI or 智慧護膝3+3?
KnowKnow AI ships an update every 3 weeks, and 智慧護膝3+3 every 2 weeks. Most recently, KnowKnow AI was updated on September 16, 2026 and 智慧護膝3+3 on September 28, 2026.

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