I built Numblr because I kept running into the same problem learning English, I could hold conversations just fine, but the moment someone rattled off a phone number or appointment date, I'd freeze. Turns out this is incredibly common among English learners, but no app specifically practices it. Numblr gives you focused listening exercises in real-world contexts: hearing a date for an appointment, catching a price, writing down a phone number. It tracks your mistakes so you can see exactly which number patterns trip you up. The free tier covers basic number tests. Numblr Pro adds advanced exercises (dates, times, mobile numbers, money), exam mode for IELTS/TOEFL prep, and conversation-based practice where numbers appear in natural English dialogue. I'd love your feedback — especially on what exercise types you'd find most useful!

Numblr

Master listening to English numbers

Master listening to English numbers