Comparison

4+2R健康日記 vs KnowKnow AI

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

Head to head

Your AI Nutrition Buddy

Free

💪 Health & Fitness

★ 3.02 ratingsView app →

About

4+2R健康日記

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1. 專業健康管理 - 專為現代人設計的完整健康記錄系統 2. 多維度記錄 - 體重、體脂、飲水等全方位追蹤 3. 智慧數據分析 - 自動圖表分析，趨勢追蹤與目標管理 4. 圖文筆記 - 支援多媒體健康日記記錄，可以寫日記也能拍照 5. 關鍵字搜尋 - 收錄王姿允醫師的衛教專文，讓你徹底解惑 6. 會員獎勵 - 代幣系統解鎖動畫，激勵用戶持續記錄 7. 安全隱私 - 生物辨識登入，資料加密保護 8. 多元登入 - 支援Apple、Google、LINE社群帳號

About

KnowKnow AI

This AI-powered app analyzes your food by photo, providing instant calorie and macronutrient breakdowns. It helps you track your nutrition effortlessly, making healthy eating more accessible.

Highlights

AI-powered photo food analysis
Instant calorie breakdown
Macronutrient analysis
Nutrition tracking
Health & Fitness companion

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

Screenshots

4+2R健康日記4 screens

KnowKnow AI4 screens

Verdict

The call

The clearest difference is in-app purchases: 4+2R健康日記 at none against KnowKnow AI's 2. 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 2 in-app purchases, starting at $14.99 per month. 4+2R健康日記 asks for nothing beyond the download.

UpkeepUpdate frequency

4+2R健康日記 ships an update fortnightly, KnowKnow AI every 3 weeks. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

Scorecard1 real difference · 9 level

4+2R健康日記 versus KnowKnow AI: the parameters behind the verdict, then further details
Parameter	4+2R健康日記	KnowKnow AI
Price	Free	Free
Rating	—	3.0 (2 ratings) — better
Positive reviews	—	100.0% of reviews
Number of ratings	—	2 — better
Update frequency	Fortnightly — better	Every 3 weeks
Ads	No	No
In-app purchases	No — better	Yes
Monetization	—	Freemium
Devices	iPhone, iPod — better	iPhone
Requires iOS	15.0 — better	16.4
Further details — not scored
Size	82 MB	131 MB
Age rating	4+	4+
Developer	Amortality Inc.	RETOWER TECH PTE. LTD.

In-app purchases

None

4+2R健康日記

No in-app purchases

2 purchases

KnowKnow AI

Subscriptions2

KnowKnow Pro$14.991 Month
KnowKnow Pro Yearly$152.991 Year

Questions

Is 4+2R健康日記 free?

4+2R健康日記 is free to download, with no in-app purchases.

Is KnowKnow AI free?

KnowKnow AI is free to download, with in-app purchases available.

Do 4+2R健康日記 or KnowKnow AI have ads?

Neither 4+2R健康日記 nor KnowKnow AI shows ads.

Which is updated more often, 4+2R健康日記 or KnowKnow AI?

4+2R健康日記 ships an update fortnightly, and KnowKnow AI every 3 weeks. Most recently, 4+2R健康日記 was updated on November 8, 2026 and KnowKnow AI on November 5, 2026.