Number Flash is a free web application designed to help language learners improve both accuracy and recall time of numbers in their target language. It uses a flashcard-style interface with smart difficulty analytics incorporating both speed and accuracy in recalling numbers, helping you optimize your practice sessions. I built this tool specifically to help me master recalling numbers in French and Italian, a task I have found surprisingly difficult to do quickly and accurately. I hope it can help you too!
Warning
Aside from initial setup and occasional updates, Number Flash is 100% offline, so you're history is never backed up to the cloud. Therefore, if you clear your browser data or switch browsers, your progress will not follow you.
- Open Safari and open https://dbraccia.com/number-flash
- Tap the three-dot menu button and then tap Share (looks like a square with an upward arrow).
- Scroll down and tap "Add to Home Screen".
- Tap Add in the top-right corner.
NOTE: I have not tested it on Android, but should work as a standard PWA
- Open Chrome and navigate to https://dbraccia.com/number-flash
- Tap the three-dot menu button.
- Tap "Install App" (or "Add to Home screen").
- Follow the prompt to complete the installation.
- Current Languages: French (🇫🇷), Italian (🇮🇹), Spanish (🇪🇸), Kannada (🇮🇳), and Mandarin (🇨🇳).
- Number Range: Custom bounds supported up to
10,000(varies by language, e.g.,100for Kannada,1000for Mandarin,10,000for Italian). - Flow & Customization:
- Card Order: Toggle between Random and Sequential order.
- Auto Read Aloud: Toggled automatic pronunciation on card flip.
- Custom Reviews: Select review lengths up to language limit.
- Dark Mode: High contrast night mode styling toggle.
- Smart Difficulty Analytics:
- Tracks response times (rolling average of the last 10 flips) and accuracy percentages.
- Automatically classifies cards into 4 levels: Difficult, Needs Work, Getting There, and Learned.
- Built-in targeting filter for quick reviews of weak categories.