Indoor cycling training Coming soon to iPhone

Get faster every time you clip in

Structured indoor workouts for your smart trainer. Simple to plan, fun to ride.

By joining, you agree to get an email to confirm your address and one when Hammy launches. Privacy Policy

Raise your FTPWorkouts at the right intensity.

Keep showing upA week plan you can stick to.

Two riders, one HammyEach gets their own rides, workouts and FTP.

How it works

Pick it, check it, ride it

From the sofa to your first interval in a few taps.

Choose a workout

Curated sessions, or your own.

Check your setup

Trainer, FTP and sensors at a glance.

Ready to ride?

6×30 s Sprints45:00

Ready, with 2 notesNothing is blocking. You can start.

Trainer controlD100 connected · ERG verifiedReady

FTP 262 WSet 14 Sep · targets scale from thisReady

Heart ratePolar H10 · 72 bpmReady

6 targets above 600 WSprints will be held at the D100’s maximum.Note

No cadence sourceBail-out will use power thresholds instead.

The ride screen stays awake and keeps recording if the app goes to the background.

Ride it

Big numbers, clear targets, and ERG holding every interval.

See how it went

Every ride, charted.

Features

Everything you need to get faster

Watch your FTP climb

Every target scales with it, so workouts grow with you.

A week you’ll finish

Plan your rides according to your schedule.

Watch yourself get faster

Your training load and FTP, week by week.

History

Weekly TSSPlanned vs actual · 8 weeks344 of 410This week

This week

Sat262×20 Threshold1:10:00 · NP 226 · IF 0.8687TSS

Thu243×12 Sweet Spot1:04:00 · NP 221 · IF 0.8476TSS

Tue22Endurance 751:15:00 · NP 178 · IF 0.6858TSS

Mon21Endurance 601:00:00 · NP 176 · IF 0.6745TSS

Last week

Sat195×4 VO₂ Max48:12 · NP 232 · IF 0.89 · ended early63TSS

Thu17Tempo 3×151:05:00 · NP 214 · IF 0.8273TSS

Build your own sessions

Tap a block, drag it, done.

New Workout

Name

FTP 262 W

015′30′45′1:04

1:04:00IF 0.84TSS 76Peak 236 W

Steps · drag to reorder

Warm-up rampZ1 → Z2 · 50 → 70% · 131 → 183 W10:00

Repeat ×3

Sweet SpotZ4 · 90% · 236 W12:00

RecoveryZ1 · 55% · 144 W4:00

Cool-downZ1 · 50% · 131 W6:00

All targets fit your D100 (0–600 W).

Sweet SpotStep 2 of 6 · in Repeat ×3

Duration12:00

Target90%

Z4 Threshold · 236 W at FTP 262 · or drag the handles on the chart

About

Hi, I’m Fabian

I built Hammy to get more out of my indoor training and to make every hour on the trainer more fun.

I wanted an indoor cycling app that’s easy to use and free of distractions, so a focused ride screen and a workout editor that feels great were where I put most of my time. One subscription covers two riders, so you can share it with whoever you train with.

Hopefully you feel that on your next ride, and Hammy helps you as much as it’s helped me.

Questions

Frequently asked

Which trainers work with Hammy?

Any Bluetooth smart trainer that supports FTMS and ERG mode. Hammy verifies ERG control and your trainer’s power range when you pair it.

Do I need an internet connection or an account?

You need an account to use Hammy: sign in with Apple, or with your email address and a password. Your workouts, rides and charts are currently stored on your device.

What is FTP, and do I need to know mine?

FTP is the power you can hold for about an hour. Every target in Hammy is a percentage of it. If you are not sure, start with an estimate during setup and update it any time from Profile.

What happens if I stop pedalling during an interval?

ERG holds off so the trainer does not fight you. Pedal steadily for 10 seconds and the target comes back by itself.

When can I get Hammy?

Hammy is in the final stretch before launch. Join the waitlist at the top of the page and you will hear the day it lands in the App Store.

How much does it cost?

Pricing will be announced before launch.