Welcome to DIY Formula Handbook ("the App"). Please read these Terms before use. By using the App, you agree to these Terms.
1. Service
The App provides recipe browsing, search, favorites, custom recipes, export, and print features.
2. Account & ID
- No registration required; a local User ID is generated on first launch
- The User ID identifies this device only and can be viewed or copied in Settings
- Provide your User ID when contacting support
3. Coins
- The first recipe in each category is free
- Other built-in recipes cost 20–200 coins based on difficulty and risk
- Custom recipes are always free
- Daily check-in grants 5 coins once per day
- Coins are virtual currency for in-app use only; not redeemable for cash
4. Purchases
- Coin packs are sold via Apple In-App Purchase
- Coins are credited to the current device after purchase
- Use "Restore Purchases" in Settings if coins are missing after payment
- Refunds follow Apple's policies at reportaproblem.apple.com
5. User Content
- Custom recipes and favorites are stored locally
- You are responsible for the legality and accuracy of custom recipe content
- Uninstalling removes local data; back up important recipes first
6. Safety & Disclaimer
- Recipes are for reference only, not professional advice
- Verify ingredient safety and use proper protection and ventilation
- You bear all risks from experimenting with or using any recipe
7. Intellectual Property
App UI, code, and built-in recipe content belong to the developer. Unauthorized copying or commercial use is prohibited.
8. Changes
We may adjust features, recipes, coin rules, or IAP offerings. Continued use after changes constitutes acceptance.
9. Contact
Questions about these Terms: contact the developer via the App Store listing with your User ID.