Year
©2026
Role
Product designiOS appWearablesWebsite

StemNotes

A cycling fuel app that plans carbohydrate for every session.

StemNotes app showing a Zone 2 ride with planned and should-have carbs and a planned versus actual toggle
StemNotes share card for a ride reading 185 grams eaten of a 195 gram plan

01/04The fuel plan and the share card

Karoo bike computer showing the StemNotes next feed field with 40 grams to eat
Garmin bike computer showing the StemNotes next feed field, 30 grams of bar

02/04Next feed on Karoo and Garmin

Three Apple Watch screens showing the week's rides, a long ride plan and the live next-feed screen

03/04On Apple Watch

App Store screen reading planned versus what you ate, over the StemNotes fuel plan for a Zone 2 ride

04/04Planned against what you ate

Body and UI typefaceStemNotes

Poppins

ABCDEFGHIJKLMNOPQRSTUVWXYZ

abcdefghijklmnopqrstuvwxyz

0123456789

  • Medium 500
  • Bold 700

Regular and Medium, 18 to 10, 140% line height

Headings
AfacadBold, 72 to 18, 95% line height
Colour in use5 colours

Colour in use

  • Purple#8B1FEAPrimary
  • Black#1C1C1CGround
  • White#FAFAFAText on dark
  • Grey#E1E1E1Neutral
  • Blue#1F4EEASecondary
Logo and toolsStemNotes

Logo and tools

StemNotes logo
About the productStemNotes

About StemNotes

The problem

Most riders fuel by feel. Long rides go wrong when the plan is a guess, and hard days need more than easy ones.

Why I built it

I wanted a fuel plan that follows the training calendar. So I built one.

What it does

StemNotes plans carbohydrate for each session in your calendar and lays it out in a fuel calendar. The plan reaches your phone, your watch and your bike computer.

Platforms

iOS, watchOS, Karoo and Garmin.

Proof

It launches on the App Store in November 2026. Until then, you can request beta access on the site.

Year
Released 2026
Role
Product design · iOS app · Wearables · Website
Platforms
iOS · watchOS · Karoo · Garmin
Sector
Sport

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