ConvertNumber
Learn numbers by language.
ConvertNumber turns everyday calculation into language practice. Enter numbers and arithmetic normally, then see the result written out in the selected language and hear it spoken aloud through system speech.
Calculate normally, then see the result written out in the language you are practicing.
Tap the written number or press equals to hear the current result spoken aloud.
Recent calculations and preferences stay in local app storage on your device.
A compact number-practice flow
Choose a language
Switch between supported languages so the same number can become focused counting practice.
Calculate as usual
Use a familiar keypad for arithmetic, then review the number result without leaving the calculator.
Read and listen
Study the written number and play system speech pronunciation for the current language.
Reuse history
Return to previous expressions and results from local calculation history when you want to practice again.
Core features
Enter calculations with a familiar calculator-style keypad
See number and result spell-outs in the selected language
Hear the current result spoken through system speech
Practice English, Chinese, Japanese, French, and Korean number forms
Reuse recent calculations from local on-device history
Change app language and number-learning settings
Use the app without creating an account or sharing contacts, photos, camera, microphone, or precise location
Support the app through optional StoreKit purchases or donations
Privacy posture
No account required
ConvertNumber does not ask you to create an account or enter your name, email, phone number, contacts, photos, camera, microphone, or precise location.
Local calculator history
Calculation expressions, results, app settings, and local state are stored on your device and are not uploaded to NEURAL CRAFT LIMITED servers by ConvertNumber.
Ads, analytics, and StoreKit
The app may use Google AdMob, Google User Messaging Platform, Firebase Analytics, and Apple StoreKit for ads, consent, analytics, and optional purchases.
Legal documents
Privacy Policy
Read how ConvertNumber handles local calculator history, settings, ads, consent, Firebase Analytics, StoreKit purchases, and speech playback.
Read documentTerms of Use
Review the educational-use limits, App Store license, local-history responsibility, ads, optional donations, and third-party service terms.
Read documentBuilt for language practice
ConvertNumber is for general education and convenience. It helps you explore number spell-outs and pronunciation, but important financial, accounting, tax, engineering, or translation work should be independently checked.
Terms of UseLocal records by default
Calculation history and preferences are stored locally. Advertising, consent, analytics, and App Store purchase processing are handled through Google, Firebase, and Apple services as described in the privacy policy.
Privacy Policy