01
Before.
Today's session is already waiting, scaled to the bells you own. Swap any move in a tap.
Tonzo is a kettlebell coach 
for the bells you own. It picks today's session, calls the rounds while you swing, and counts every rep as weight moved 
, all the way to your first Tonne.
Before. During. After.One session, start to finish.
02
During.
Phone on the floor. A big clock, read from the mat. Tonzo calls the rounds, you swing.
03
After.
206 reps with a 16 kg bell: 3,296 kg. About 3 great white sharks.
Kettlebells are simple.Programming them isn't.
0kg
400 kg
1.2 t
1.5 t
5 tEvery 1,000 kg is a Tonne
Your weight moved, in things you can pick up. Start with a piano. Work up to the elephant.
How hard today?
Your Bell Score reads sleep, HRV and training load, then sets today: recover, steady or push.
A plan that adapts Pro
Rate each session. Tonzo tunes next week to fit.
Your coach, your tone Pro
A voice coach that's soft, pushy or extreme.
Four programs,scaled to your bells.
First Bell
4 wk · 3 days · 20 min
Strong and Steady
6 wk · 3 days · 20 min
Iron Engine Pro
8 wk · 4 days · 30 min
Little and Often
4 wk · 5 days · 10 min
Build your own.
Make your own sessions, test what changed, and train the hardest program.
- Workouts by muscle
- Multi-week plans
- One-move timer
- Iron Engine
- Tests and benchmarks
EMOM
Questions,answered.
What do I need?
An iPhone and a kettlebell. Tonzo scales every session to the bells you own, so one is enough to start.
What's a Tonne?
1,000 kg of weight moved. 206 reps with a 16 kg bell is 3,296 kg: about 3 great white sharks.
Which programs are there?
First Bell (4 weeks), Strong and Steady (6 weeks), Iron Engine (8 weeks) and Little and Often (4 weeks, 10 minutes a day).
What does Pro add?
Build your own workouts, timers and plans, a plan that adapts every week, every program, benchmark and Snack, your coach in the tone you pick, and your full history with weekly statements.
Will you email me?
Only about testing.
Is there an Android app?
No. Tonzo is iPhone only.
So, have you liftedyour first Tonne?
Start with a piano. Join the testing list and we'll email your invite.
