Comparison

Prism vs 体重日记

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

Head to head
About

Prism

Features
Read full description

Prism is an elegant utility that transforms your daily sunlight exposure into a journey of discovery. By syncing seamlessly with your Apple Watch, Prism helps you balance your light intake and well-being effortlessly. Key Features 1 Seamless Apple Watch Integration. Automatically syncs Time in Daylight using Apple Watch ambient light sensors for a hands-free tracking experience. 2 Dynamic iPhone Widgets. Stay connected with beautiful Home Screen and Lock Screen widgets that show your progress at a glance. 3 Spirit Evolution. Your sunlight data nourishes unique Spirits. Unlock various visual forms as they evolve based on your daily activity. 4 Environmental Insights. View real-time local UV Index and sunset data to plan your outdoor day safely. 5 Secure HealthKit Sync. Prism integrates deeply with the Apple Health app to store and visualize your light exposure data securely. Disclaimer. All data is for informational purposes only. Please consult a professional before making health decisions. information about the auto-renewable nature of the Premium Subscription: Subscription period: 1 month. Price: $1.99 per month (or local equivalent). Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. Terms of Use (EULA): [https://superficial-restaurant-956.notion.site/Privacy-Policy-2f3f52245d5580b1ae9ac299a0408cff?source=copy_link]. Privacy Policy: [https://superficial-restaurant-956.notion.site/Terms-of-Use-EULA-2f3f52245d558073aa26f42eb6149f80?source=copy_link].

About

体重日记

Features
Read full description

体重日记:称重记录助手,适合想减肥、减脂、瘦身的人,用最轻量的方式把“每天称重”变成可视化的进度。 你可以用它完成: 称重/晨重记录:快速记录每次数据与时间 曲线与折线图:查看波动与变化趋势,支持不同时间范围 目标与进度:设置目标,持续追踪进度与阶段变化 周报/月报复盘:用汇总数据帮助你复盘与坚持 单位切换:支持斤、公斤、磅等单位显示 数据导出与备份:需要时可导出数据,便于留存 健康管理:以数据为依据进行自我管理(仅为记录与分析工具)

Screenshots

Prism4 screens
体重日记3 screens

Verdict

The call

The clearest difference is price: Prism at Free against 体重日记's $0.99. 体重日记's advantage is in-app purchases (none vs 1) and iOS requirement (17.6 vs 26.0). On 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

Prism is free to download; 体重日记 costs $0.99 up front. Prism sells 1 in-app purchase, starting at $1.99 per month. 体重日记 asks for nothing beyond the download.

UpkeepUpdate frequency

Prism ships an update every 11 days, 体重日记 fortnightly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 3 level
Prism versus 体重日记: the parameters behind the verdict, then further details
ParameterPrism体重日记
PriceFree — better$0.99
Update frequencyEvery 11 days — betterFortnightly
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS26.017.6 — better
Further details — not scored
Size3 MB12 MB
Age rating4+4+
Developer剑炜 陈创宏 陈

In-app purchases

1 purchases

Prism

Subscriptions1
  • Prism Premium (Monthly)1 Month trial$1.991 Month
None

体重日记

No in-app purchases

Questions

Is Prism free?
Prism is free to download, with in-app purchases available.
Is 体重日记 free?
体重日记 costs $0.99, with no in-app purchases.
Do Prism or 体重日记 have ads?
Neither Prism nor 体重日记 shows ads.
Which is updated more often, Prism or 体重日记?
Prism ships an update every 11 days, and 体重日记 fortnightly. Most recently, Prism was updated on October 28, 2026 and 体重日记 on October 25, 2026.

Other comparisons