Bucchan Works APP DEVELOPMENT
Android English / 日本語 Free version available

Rep Tempo Timer

Tempo trainer for strength training

Four seconds down, two seconds up. The app calls the tempo out loud so you don't have to count — you just move. Every set you finish is logged, and the numbers turn into a curve you can actually read.

Coming soon on Google Play See what it does
Running a workout

What it does

More than a metronome — everything you need to keep showing up.

⏱️

Hold the tempo

Set the seconds for the lift, the lower and any pause in between, per exercise. Reps are counted aloud and rests run themselves.

↔️

One side at a time

For curls and rows, the timer alternates right and left for you. Choose which side starts and how long you rest between them.

📋

Run a whole session

Line exercises up into a routine and the app takes you through all of them, rests included. Assign routines to days of the week.

📅

Logging that happens by itself

Finish a set and it's recorded. A calendar, a streak counter and a monthly summary show what you did and what you skipped.

📈

Watch the numbers move

Total reps, top load and volume per exercise. Weight, body fat, muscle mass and BMI too — with a goal line across the chart.

Pull in your scale's data

Through Health Connect: weight and body fat, plus steps, sleep and resting heart rate. No typing, and recovery sits next to effort.

🤖

Export for an AI to read

Workouts, body composition and daily activity as Markdown or CSV. Paste it into a chat and ask why the numbers stalled.

☁️

Same records on every device

One file on Google Drive, read on open and saved on close. Use two devices at once and the records merge instead of colliding.

🔔

Keeps running in your pocket

Switch apps or turn the screen off and the timer carries on, with the count in your notifications and the cues still audible.

Screens

All screenshots are from the English build.

Workout tab
Workout — today's session
Finished
Done — compared to last time
Records
Records — calendar & summary
Progress chart
Progress per exercise
Body composition
Body weight & composition
Body trends
Trends with a goal line
Settings
Settings — grouped by body part
Timer
Running — reps left and rests

Free and Pro

The free version does the real work. Pro removes the limits — and your data carries straight over.

FeatureFreePro
Tempo, reps and sets · one side at a time · holds and timed exercises
Exercises you can saveup to 4unlimited
Routines (several exercises in a row)1unlimited
How far back records are shownlast monthforever
Progress charts per exercise
Weight, body fat and muscle mass · change since last
Body composition trends and goals
Import from Health Connect
Weekly plan
Google Drive syncmanual onlyautomatic
Export records (Markdown / CSV)
Adswhen saving a workoutnone

Anything past the free limits is hidden, not deleted. Switch to Pro and it all comes back.