Norethia
Check your routine for clashes
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Check product compatibility, understand ingredient clashes, and build a calmer AM/PM skincare routine without the guesswork.
Check if your skincare products are working together, or doing too much.
Skincare, without excess.
Norethia helps you check product compatibility in seconds and build a routine that makes sense, without turning skincare into a research project.
See where ingredient combinations may clash, get clear explanations, and organise your products into a simple AM/PM plan.
What it does:
* Check products for compatibility
* Understand why some combinations may need care
* Build routines for morning and night
* Save your products
* Track changes as your routine evolves
Premium includes:
* Larger compatibility checks
* More detailed results
* Unlimited saved products and routines
* Full check history
* Calendar planning
For people who want their skincare routine to feel clearer, calmer, and easier to manage.
Educational guidance only. Not medical advice.
Terms of Use: https://norethia.com/terms
Privacy Policy: https://norethia.com/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
This update improves the Norethia checker, search, and saved check experience.
What’s new:
* Improved product search, including better matching for brands, ingredients, product types, and common misspellings
* Clearer compatibility guidance for retinoids, exfoliating products, rinse-off products, and benzoyl peroxide
* New saved check versioning, so older results can be marked and refreshed with the latest guidance
* Softer, clearer result wording throughout the checker
* Updated Recent Checks design and navigation
* Cleaner menu layout with quicker access to key tools
* General polish, bug fixes, and performance improvements
Educational guidance only. Not medical advice.
The developer, Polly Walters, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- Search History
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Polly Walters
- Size
- 39 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Norethia Premium Monthly $3.99
- Norethia Premium Annual $34.99
- Copyright
- © 2026 Polly Walters
