📚 Documentation
Everything you need to know about using ThatOne.App
🚀 Getting Started
ThatOne.App is designed to be intuitive - just click and use any app immediately. No accounts, no downloads, no complexity.
Core Principle: "That One Touch"
Everything is directly editable. See a number, text field, or setting? Just click it to change it. No "edit" buttons, no confirmation dialogs.
Quick Start
- Visit any app from our apps catalog
- Start using it immediately - no setup required
- Click any value to edit it directly
- Your data saves automatically in your browser
- Works offline once loaded
📱 App Categories
💰 Financial Calculators
Loan calculators, compound interest, budgeting tools, and more to help manage your finances.
📊 Productivity Trackers
Habit trackers, mood tracking, water intake, sleep patterns - build better routines.
🎨 Creative Tools
QR generators, color pickers, password generators, and design utilities.
🎲 Decision Tools
Coming soon: Coin flip, wheel spinner, pros/cons lists, and decision-making aids.
🔒 Privacy & Your Data
Free Tier (What you're using now)
- Zero server contact - Your data never leaves your device
- No tracking - We don't know what you calculate or track
- Works offline - Internet only needed for first load
- Browser storage - Data saved in your browser's localStorage
Premium Features (Coming Soon)
- Encrypted sync - Optional sync across devices with your own encryption key
- Advanced features - Enhanced tools and automation
- Still private - Even premium features don't track your behavior
Our Promise: We will never sell, share, or analyze your personal data. Your information belongs to you.
❓ Common Questions
Why don't apps require accounts?
Accounts create friction and privacy concerns. Our apps work immediately because they store everything locally in your browser. This means faster access and better privacy.
What happens if I clear my browser data?
Your app data will be lost since it's stored locally. This is the trade-off for privacy - your data stays completely on your device. Premium users will have encrypted backup options.
Do apps work offline?
Yes! Once an app loads, it works completely offline. Your calculations, tracking, and data modifications all happen locally.
How do you make money if everything is free?
We'll offer premium features (like sync and advanced tools) through one-time purchases or lifetime deals. No subscriptions, no ads, no data selling.
🆘 Need Help?
Found a bug? Have a suggestion? Want to request a new app?
Response Time: We typically respond within 24 hours and take all feedback seriously.