NATURFACTOR vs Itchi
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
Itchi
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Psoriasis has patterns. Itchi helps you study yours. If you live with psoriasis, you already know flares can feel random. But they rarely are. Food, stress, sleep, movement: something sets them off. Itchi is a simple, private self-tracking tool that helps you notice your own patterns over time, so you can learn how your skin responds and make small changes that add up. WHAT ITCHI HELPS YOU STUDY Psoriasis is more than skin. Itchi helps you look at three connected areas: 1. Diet. Track how food and drink relate to your flares, and run focused experiments like temporarily setting aside a suspected trigger. 2. Mind. Use built-in breathing exercises to help you calm down, and see how calmer days line up with your skin over time. 3. Movement. Connect daily steps and activity, so you can notice how movement relates to how your skin feels. HOW IT WORKS 1. Run structured experiments. Instead of guessing, Itchi guides you through focused self-experiments, one change at a time, so you can see how your skin responds. 2. Check in daily. A quick daily check-in across diet, mind, and body takes seconds. Over time, these small logs surface connections you would never spot day to day. 3. Build momentum with streaks. Consistency is where the insight comes from. Itchi's streaks and badges keep you going gently. No pressure, just progress. 4. Track your skin over time. Add private progress photos and notes to see how your skin changes across weeks and experiments. 5. Connect with Apple Health. Optionally sync steps and mindful minutes to bring movement and calm into the picture. Always your choice, always private. BUILT FOR PRIVACY Your health data is yours. Itchi keeps your logs, photos, and check-ins private and secure. You can delete your account at any time. A TOOL, NOT A DOCTOR Itchi is a self-tracking and educational tool to help you understand your own patterns. It does not diagnose, treat, or provide medical advice, and it is not a medical device. Always consult a qualified healthcare professional for medical decisions. Start noticing what your skin is telling you. Download Itchi and begin studying your own patterns, at your own pace.
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Verdict
The clearest difference is in-app purchases: Itchi at none against NATURFACTOR's 4. On price, update cadence, ads and device support 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. Itchi asks for nothing beyond the download.
NATURFACTOR ships an update every 9 days, Itchi every 11 days. The most recent releases landed on October 11, 2026 and October 17, 2026 respectively.
| Parameter | NATURFACTOR | Itchi |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 days β better | Every 11 days |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone | iPhone, iPod β better |
| Requires iOS | 16.4 | 15.1 β better |
| Further details β not scored | ||
| Size | 105 MB | 48 MB |
| Age rating | 4+ | 17+ |
| Developer | NF Cosmetics GmbH | Nuemad OΓ |
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
Itchi
No in-app purchases






