Comparison

SunSync 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

SunSync

Features
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Always tired, waking groggy, or struggling to fall asleep? The cause might be simpler than you think — your morning light routine. SunSync syncs your day to the sun. Track sunlight exposure, estimate your vitamin D intake, and get personalized circadian rhythm guidance — all based on your real location and habits. Your body clock controls your sleep, energy, mood, and focus. SunSync helps you work with it — not against it. With SunSync you can: - Track sunlight exposure and daily light habits — know when you've hit your target - Estimate vitamin D from sun exposure based on your skin type and location - Log supplements and monitor your total daily intake - Follow personalized circadian recommendations for your schedule - Discover your best sunlight windows — and when to avoid the UV index - Build routines to improve sleep and melatonin production naturally - Set smart reminders for sunrise, sunset, and wind-down time - Add a home screen widget — see your vitamin D window at a glance, without opening the app - View history and long-term trends to see your progress Built for the biohacking community — and anyone who just wants to feel better. Whether you're optimizing for performance or simply tired of being tired, SunSync gives you the sunlight data your wellness routine has been missing. Vitamin D tracking, body clock alignment, supplement logging, and a home screen widget showing your vitamin D window — in one app. Disclaimer: SunSync provides estimates and general wellness guidance. It is not a medical device and does not replace professional medical advice. Terms: https://martarodriguezm.github.io/SunSyncLegal/terms.html Privacy Policy: https://martarodriguezm.github.io/SunSyncLegal/privacy.html

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

SunSync4 screens
体重日记3 screens

Verdict

The call

The clearest difference is price: SunSync at Free against 体重日记's $0.99. 体重日记's advantage is in-app purchases (none vs 2). On update cadence, 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

SunSync is free to download; 体重日记 costs $0.99 up front. SunSync sells 2 in-app purchases, starting at $1.99 per year. 体重日记 asks for nothing beyond the download.

UpkeepUpdate frequency

SunSync ships an update every 3 weeks, 体重日记 fortnightly. Both last shipped on October 25, 2026.

Scorecard2 real differences · 4 level
SunSync versus 体重日记: the parameters behind the verdict, then further details
ParameterSunSync体重日记
PriceFree — better$0.99
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPad — better
Requires iOS17.617.6
Further details — not scored
Size25 MB12 MB
Age rating4+4+
DeveloperMarta Rodriguez创宏 陈

In-app purchases

2 purchases

SunSync

Subscriptions1
  • Year3 Days trial$1.991 Year
One-time1
  • Lifetime$2.99
None

体重日记

No in-app purchases

Questions

Is SunSync free?
SunSync 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 SunSync or 体重日记 have ads?
Neither SunSync nor 体重日记 shows ads.
Which is updated more often, SunSync or 体重日记?
SunSync ships an update every 3 weeks, and 体重日记 fortnightly. Most recently, SunSync was updated on October 25, 2026 and 体重日记 on October 25, 2026.

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