# RetinTrack A — Smart Skincare Calender

> Smart Skincare Calender (iPhone/iPad app by 瞳灵 胡.)

- Source: https://appshunter.io/ios/app/retintrack-a/id6804353678 (this page in markdown: same URL + `.md`)
- Developer: [瞳灵 胡](https://appshunter.io/developer/6799178471)
- Category: Health & Fitness, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 1 MB
- Languages: American English
- Released: 2026-09-05
- Data updated: 2026-10-10
- User reviews in markdown: https://appshunter.io/ios/app/retintrack-a/id6804353678/reviews.md

## What is RetinTrack A?

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/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| A+C | $0.99 | per month |
| A+C International | $8.99 | per year |



## Version history (last 2 releases)

### 1.1 — 2026-09-18

Added multi-language localization.

### 1.0 — 2026-09-05

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-10.*