Fuelstate

The plan-to-execution method

How Fuelstate turns a planned run into a fueling strategy you can follow.

Fuelstate is a running nutrition planner and live fueling companion for iPhone and Apple Watch. It combines your profile, planned run, conditions, supported course context, gut tolerance, and the products already in your kit into carbohydrate, fluid, and sodium targets; caffeine guidance where relevant; and a practical plan for what to pack and when to fuel.

  1. 01Inputs

    The runner, the run, conditions, context, and selected products.

  2. 02Plan

    Targets become quantities, preparation, packing, and timing.

  3. 03Carry it

    The prepared plan continues into supported live run surfaces.

One connected workflow

The calculation is only the beginning.

Fuelstate is designed around the full job a runner has to do: decide what the run requires, match that need to real products, prepare the kit, then keep the next fuel action accessible when attention is limited.

01

Start with the runner and the run

Context comes before products.

Fuelstate starts with the details that shape the planned effort, rather than applying one fixed interval to every run.

Runner
Profile details, experience, preferences, gut tolerance, and prior feedback that you provide.
Run
Planned distance, duration or pace, run type, and the date and time of the effort.
Conditions
Weather, terrain, fatigue, and other run context where available or entered.
Course
Source-backed elevation and aid-station context for supported race presets. A course preset is not required to build a plan.
Fuelstate product-specific fuel, hydration, salt, and cadence packing guidance.
Example product assignments and what-to-bring guidance from an approved Fuelstate capture.
02

Build around the kit

Numbers become products you already know.

A target is not yet a packing list. Fuelstate matches the plan to products from its catalog and custom products you add, so the strategy can reflect what you own, prefer, and tolerate.

  • Product quantities connect the nutrition targets to the kit.
  • Per-product carbohydrate, sodium, fluid, and caffeine details are included where relevant.
  • Product availability and runner preferences can change what the final plan assigns.
03

Turn targets into a practical plan

Prepare before attention gets scarce.

Fuelstate turns carbohydrate, fluid, and sodium targets—and caffeine guidance where relevant—into a sequence a runner can prepare and carry.

  1. Before
    Preparation

    See pre-run guidance and, where relevant, race-morning or carb-loading steps before the start.

  2. Pack
    What to bring

    Connect quantities to products, hydration, salt, carrying needs, and the kit that leaves with you.

  3. During
    Fuel timing

    Translate assigned fuel products into a cadence for the run. Production live timing currently applies to assigned fuel products.

04

Four delivery paths

The plan doesn’t stay on the planning screen.

Fuelstate can bring the prepared cue to the surface that fits the run—glanceable, actionable, hands-free, or carried into a compatible route file. These paths complement one another; runners do not have to choose only one.

Fuelstate Lock Screen Live Activity showing a fuel countdown with Done and Skip controls.

Live Activity

See the next supported fuel cue and countdown, then use Done or Skip from the Lock Screen without reopening the plan. Availability depends on iPhone settings, permissions, and system state.

Approved Fuelstate Apple Watch screens showing run readiness and a live fuel prompt with Done and Skip controls.

Apple Watch

Supported countdown and fuel-now states can appear on Apple Watch with Done and Skip actions. Apple Watch remains part of a connected iPhone and Apple Watch experience.

Fuelstate audio cue example with a runner and a live fuel prompt.

Audio cues

Opt-in spoken fuel reminders can keep the phone in a pocket while connected headphones carry the cue. Delivery depends on audio settings, permissions, and the active connection.

Fuelstate route map showing product-specific fuel cue waypoints distributed along a course.

Route fuel waypoints

Fuelstate creates a Garmin Connect FIT or COROS GPX route file with fuel waypoints. You share or import it; display depends on the compatible device.

05

Record what happened

The run becomes useful context for next time.

After the run, Fuelstate can show the completed activity, nutrition totals, and whether fuel events were completed or skipped. Runners can add GI and gut feedback and review product patterns over time.

When supported workout data is available, completed distance, duration, pace, heart rate, cadence, and elevation can be reconciled with the recorded run. This review is a record of execution and runner feedback—not a medical assessment or a promise that future performance will improve.

Product transparency

What Fuelstate does — and does not do.

Fuelstate does

Turn the information you provide into educational sports-nutrition guidance for preparation, products, packing, and fuel timing. It keeps that prepared plan accessible across supported run surfaces.

Fuelstate does not

Replace a clinician, coach, or sports dietitian; diagnose a condition; guarantee cue delivery or performance outcomes; or make every feature available on every device, course, or permission state.

Fuelstate provides educational sports-nutrition guidance, not medical advice. Consult a qualified professional before making changes that may affect your health.

From plan to follow-through

Build the strategy before the run asks you to remember it.

Prepare the kit. Carry the plan. Keep the next fuel action close.

Download on the App Store