Garmin Edge
Put StemNotes Fuel on an Edge ride screen and it counts down to each feed, offline.
StemNotes Fuel is a Connect IQ data field. It shows your next feed from the plan you made in the StemNotes app: the countdown, the grams of carbohydrate and what to eat. Once the plan is on your Edge it runs offline, so a dead phone halfway round doesn't matter.
Linking a Garmin needs StemNotes Pro. The 14-day trial covers it.
Set it up
Install StemNotes Fuel from the Connect IQ store.
Add it to any ride screen.
Open that screen. The field shows a 6-character code.
In the app, go to Settings › Connected accounts › Garmin Edge and enter the code.
The field fetches today's plan straight away. Plan tomorrow's ride the night before and it shows that too.
What you see
In a small field you get a countdown to your next feed with the grams beside it. When a feed comes due it reads, say, EAT 40g and flashes for a few seconds. The colour shows the feed's size against your per-feed limit, so a big one stands out before you read it.
Give the field a full screen, or half of one, and you get the full page: the next feed, what you've eaten so far and the rest of the plan.
Alerts
The field flashes when a feed is due. For a beep as well, turn on Sound alerts under Settings › Connected accounts › Garmin Edge. The Edge's own Tones setting must be on too.