underrated app, it's like Duolingo for drilling binary, very nice for extra practice when still learning! I'm just starting out so haven't tried everything yet but so far I thought it'd be nice to have a calculator instead of just input for answers. I'll play around a bit more, might recommend to classmates - thank you for this app!
★★★★★LY Leev1.1.04 Oct 2026
★★★★★Francis O'Loghlinv1.0.020 Aug 2026
Pretty good, but there is no option to drill binary numbers of a specific length.
Developer reply
Thanks — this one was a fair hit, and it's now live. "Practice any length" lets you pick a skill, a width (1-16 bits for binary) and how many questions, then drill exactly that. It records your stats but won't touch your level progress, so you can jump straight to 8-bit whenever you want. Hope it lands right!