NATURFACTOR vs Aligner Diary
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
NATURFACTOR
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Your skin age β made across your day. You measure your sleep. Your recovery. Your steps. What reaches your skin, you don't know. NATURFACTOR connects the two. SKIN AGE A number in years, against your actual age. Built from what shapes your skin across the day: sleep duration and stages, heart rate variability, resting heart rate, UV exposure, humidity, your routine. PACE OF AGING The direction beside the number. Rising, steady or falling β with the change against last week in years. WEEKLY, NOT DAILY Recalculated once a week from a rolling 30-day window. That is deliberate. Skin does not change overnight, and a number that jumps every morning tells you nothing. For the first few days your value stays provisional until enough data has arrived. SKIN CHECK A structured assessment of where your skin currently stands. As a starting point and as a recurring reference. FOUR FACTORS Behind it sits your skin quality score, built from four weighted areas. Care β day and night routine, journal, mood, hydration, streak. Rhythm β sleep timing, habits, consistency. Recovery β from Apple Health: sleep stages, heart rate variability, resting heart rate. Environment β UV index and humidity at your location, automatically. A roughly rounded position is enough, to about a kilometre. MEDITATION Guided sessions to bring you down. Stress feeds into your rhythm β here you act on it directly instead of only logging it. SKIN REPORTING Your progress as a coherent report. How your skin age, your score and each factor have moved across the weeks. INSIGHTS Which factor is holding you back, which one is carrying you. Trends and connections across the weeks. LIBRARY Field Notes and Skin Atlas. Background on skin, editorial rather than promotional. WHAT THIS IS BUILT ON Chrono-Barrier Skin Scienceβ’ combines skin barrier research with the skin's circadian rhythm. NATURFACTOR products are made in Germany under GMP and ISO 22716, independently tested for stability and safety. MEMBERSHIP Rhythm and Care unlock extended analytics, content and your Member Card. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ App Terms of Use: https://naturfactorcosmetics.com/pages/nutzungsbedingungen-app Privacy Policy: https://naturfactorcosmetics.com/policies/privacy-policy
Aligner Diary
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Aligner Diary is a private personal tracker designed to make clear-aligner routines easier to follow and treatment progress easier to review. WEAR TIME AT A GLANCE Record when your aligners go in or come out. The app totals todayβs wear and time-out periods and shows how much time remains within your daily goal. CLEAR TRAY-CYCLE PLANNING Set your current tray, total number of trays and change interval. See your current stage, goal streak and next planned tray change from the Today and Progress screens. PHOTO PROGRESS JOURNAL Add teeth photos from the camera or photo library and revisit them by date, so small changes are easier to notice over time. CHECK-INS AND TRENDS Log soreness, fit, attachment concerns, aligner damage, sharp edges and gum bleeding. Trend views help you organize recent observations and decide what to discuss with your dentist or orthodontist. CALENDAR AND EDITABLE HISTORY Use the calendar to review daily wear, photos and check-ins. Edit or delete entries whenever something was recorded incorrectly. REMINDERS, THEMES AND TWO LANGUAGES Use optional wear and tray-change reminders, choose from multiple interface themes, and switch between Simplified Chinese and English. ALIGNER DIARY PRO Optional Pro access adds dentist-ready PDFs, shareable photo comparison cards, advanced reminders and a device privacy lock. Choose monthly, annual or lifetime access and restore eligible Apple purchases. ACCOUNT, PRIVACY AND LOCAL DATA Core aligner records and teeth photos stay on your device. No registration is required to buy or restore Pro through Apple. An optional account can sync membership entitlement; any account can be permanently deleted in the app. Export, preview and restore local backups at any time. Aligner Diary is for personal tracking only. It does not provide medical diagnosis, treatment advice or emergency services. Contact a dentist or orthodontist about persistent pain, damaged aligners, poor fit or other health concerns. Terms of Use: https://alignerdiary.com/terms Privacy Policy: https://alignerdiary.com/privacy Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is device support: Aligner Diary at 3 against NATURFACTOR's 1. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. NATURFACTOR sells 4 in-app purchases, starting at $9.00 per month and Aligner Diary sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
NATURFACTOR ships an update every 9 days, Aligner Diary weekly. The most recent releases landed on October 11, 2026 and October 5, 2026 respectively.
| Parameter | NATURFACTOR | Aligner Diary |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 days | Weekly β better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPad, iPod β better |
| Requires iOS | 16.4 | 15.0 β better |
| Further details β not scored | ||
| Size | 105 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | NF Cosmetics GmbH | ζδ½³ ζ |
In-app purchases
NATURFACTOR
- Rhythm7 Days trial$9.001 Month
- Care7 Days trial$18.001 Month
- Rhythm7 Days trial$89.001 Year
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- Care7 Days trial$179.001 Year
Aligner Diary
- Pro Monthly$0.991 Month
- Pro Annual$3.991 Year
- Pro Lifetime$7.99









