Comparison

RetinTrack A vs 肠道森林

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

Head to head
About

RetinTrack A

This app helps you manage your retinol skincare routine with a smart 90-day calendar. It provides personalized recommendations based on your skin type and experience, with automated reminders and Apple Calendar sync. Track your progress and adjust your schedule as your skin adapts.

Highlights
  • Personalized 90-day skincare calendar
  • Smart automated reminders
  • Customizable concentration and frequency
  • Apple Calendar sync
  • Progress tracking
  • Skin type and experience algorithm
Features
Read full description

Should You Apply Retinol Tonight? Forget when you last used retinol? Worried about overusing it or losing progress by taking too long of a break? RetinolOS takes the guesswork out of your routine. Turn "going by feel" into a clear 90-day skincare calendar with smart, automated reminders. 3 Questions to Set Your Safe Baseline Skin Type × Retinol Experience × Core Goal. Our algorithm builds your personalized plan with recommended concentrations and weekly frequencies—staying safely within your skin’s tolerance level. Customizable Schedule "Use once, rest twice" is just the starting point. Adjust concentration and weekly frequency anytime as your skin adapts, and the system instantly recalculates your 90-day plan. Seamless Apple Calendar Sync Automatically sync retinol nights to your Apple Calendar and Reminders. Set your preferred alert time and let your native calendar act as your skincare alarm. Track Your Progress Check off your routine in one tap. Easily view your monthly completions and upcoming retinol nights to build a clear, trackable routine. Subscription Details 7 to 14-day free trial with full feature access Cancel anytime One-tap purchase restoration Stop guessing your skincare routine—start tonight. Privacy Policy: https://molly-hu-dev.github.io/A-C/privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

肠道森林

Features
Read full description

肠道森林是一款用于个人记录与长期观察的健康记录工具,帮助你整理排便情况、饮食、饮水与日常活动,并以图表和森林地图呈现记录。 记录与观察 • 记录排便时间、形状、颜色、用时、难易程度、排便量与感受。 • 记录饮食标签、饮食量、饮水、活动、久坐与站立;体重为可选项目。 • 按时间范围查看排便记录及生活因素记录。 • 手动选择多个指标,观察同一时间范围内的变化。 • 森林地图按日期展示已有的排便记录。 隐私与数据 记录默认保存在设备本地。当前版本不提供账号或 iCloud 云端同步。经你授权后,应用可从 Apple 健康读取部分数据以预填相关字段;应用不会向 Apple 健康写入数据,也不会把个人记录上传到开发者服务器。详情请阅读在线隐私政策。 重要提示 本应用仅用于个人记录和信息观察,不提供医疗建议、诊断或治疗,也不判断记录之间存在因果关系。若出现持续或严重不适,请咨询医疗专业人士。

Screenshots

RetinTrack A4 screens
肠道森林4 screens

Verdict

The call

The clearest difference is in-app purchases: 肠道森林 at none against RetinTrack A'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. RetinTrack A sells 2 in-app purchases, starting at $0.99 per month. 肠道森林 asks for nothing beyond the download.

UpkeepUpdate frequency

RetinTrack A ships an update fortnightly, 肠道森林 every 10 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 8 level
RetinTrack A versus 肠道森林: the parameters behind the verdict, then further details
ParameterRetinTrack A肠道森林
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyFortnightlyEvery 10 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad — betteriPhone
Requires iOS18.017.0 — better
Further details — not scored
Size1 MB22 MB
Age rating4+4+
Developer瞳灵 胡苍昊 姚

In-app purchases

2 purchases

RetinTrack A

Subscriptions2
  • A+C7 Days trial$0.991 Month
  • A+C International14 Days trial$8.991 Year
None

肠道森林

No in-app purchases

Questions

Is RetinTrack A free?
RetinTrack A is free to download, with in-app purchases available.
Is 肠道森林 free?
肠道森林 is free to download, with no in-app purchases.
Do RetinTrack A or 肠道森林 have ads?
Neither RetinTrack A nor 肠道森林 shows ads.
Which is updated more often, RetinTrack A or 肠道森林?
RetinTrack A ships an update fortnightly, and 肠道森林 every 10 days. Most recently, RetinTrack A was updated on November 6, 2026 and 肠道森林 on October 31, 2026.

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