ItalianoEnglish
A metronome is judged on one thing: whether the beats are really evenly spaced. Everything else is decoration around that question.
30 to 300: slider, single steps, or tap the tempo. 
The first beat is accented: a bar sounds like a bar. 
The pendulum reads the same number the sound came from.
Why the tempo does not drift
This metronome schedules no beats. It renders one whole bar into a buffer, with the clicks exactly where they belong, and hands it to the audio engine to loop: from then on the spacing is accurate to the sample, and no timer can be late because the phone is busy doing something else. It is also why there is no audio file in the package — a recorded click would have to be scheduled, and scheduling is what drifts.
What is in it
- 30 to 300 BPM, with a slider and two buttons for single steps.
- Bars of 1 to 8 beats, the first accented: it clicks higher, so a bar can be heard as a bar without counting.
- Tap the tempo. Four taps and it goes at that speed — the average of the taps, not the last one, so one clumsy tap does not throw it away.
- A pendulum that swings from the same number the sound was rendered from: what you see and what you hear are the same arithmetic.
- Haptics on the beat, if you want them, with the accent felt harder.
- The screen stays on while it is going.
- In English and Italian, following the phone's language.
Your data stays yours
Metronome asks for no permissions at all: no account, no sign-up, no servers, and the network is needed only for the ads.
How it is paid for
One banner anchored at the bottom, and that is all: no ads while you play, no subscription, no subdivision held hostage.