Workouts
sets / load / intensity
PUBLIC BETA — iOS
Your day has
a system now.
Training, meals, hydration, sleep, recovery, tasks, and a coach that understands all of it. Grindline keeps your whole day moving in one direction.
Public beta for iPhone. Available now.
APPLE HEALTHAPPLE INTELLIGENCEON-DEVICE AILOCAL-FIRST
RECOVERY87
MORNING BRIEFINGYour day, explained in context
SCROLL TO FOLLOW THE LINE
01 / THE SYSTEM
Most apps record a moment.
Grindline reads the whole day.
Sleep changes training. Training changes recovery. Food, water, stress, and schedule change both. Grindline keeps those signals together, then turns them into the next useful decision.
WHAT GRINDLINE TRACKS11 connected areas. One signal map.
Recovery
estimate / HRV / activity
Sleep
duration / stages / score
Nutrition
calories / macros / meals
Hydration
goal / intake / history
11 CONNECTED SIGNALSONE DAY
Everything stays connected.
Supplements
daily checklist / completion
Tasks
plans / reminders / notes
Weather
forecast / UV / conditions
Streaks
habits / totals / perfect days
Apple Health
activity / workouts / signals
Body + profile
goals / measurements / targets
02 / YOUR MORNING
Open one app.
Know the whole day.
The home dashboard is yours to arrange. Bring the signals you use most to the top, hide the rest, and start with a briefing built from your actual context.
7daily systems
1personal dashboard
0app switching
HYDRATION1,750 / 3,000 ML
SLEEP7H 45M
RECOVERY87%
03 / INSIDE THE APP
Built deep.
Designed to flow.
LIVE WORKOUTRPE
Finish strong. Log it honestly.
Move through the session, record the final rep, flag a difficult set in red, then lock the workout and rate it very intense. Grindline keeps the effort behind every set—not just the completed workout.
DOWNLOAD ON TESTFLIGHTLIVE SYSTEM
GRINDLINE INTELLIGENCEAPPLE FOUNDATION MODELS
PERSONAL CONTEXT LAYEROne coach.
Your whole day.
Your whole day.
04 / GRINDLINE AI
Not a chatbot
beside your data.
A coach inside it.
Ask about workouts, nutrition, recovery, sleep, wellness, or the day ahead. Grindline AI can respond from your own plans, logs, Health context, and current goals—with Apple Intelligence processing the request on your iPhone.
TRAININGRECOVERYNUTRITIONSLEEP
TYPE A QUESTION. OR TALK IT THROUGH.Press and hold the AI button to start voice chat.
↗05 / ON-DEVICE INTELLIGENCE
On your iPhone.
For your day.
Chat, coaching, generation and food-photo analysis use Apple Intelligence locally. Compatible hardware, iOS 27 or later, Apple Intelligence enabled and an available on-device model are required.
ONE ON-DEVICE MODELAPPLE INTELLIGENCE
LOCAL
Apple Foundation Models
One Apple model for chat, coaching, generation and food-photo estimates. Your AI requests are processed on your iPhone. The current beta has no external AI fallback.
CHAT + MORNING BRIEFINGConversations you guide, with your plans and logs as useful context
TRAINING + RECOVERY INSIGHTWorkout history, recovery estimates, HRV, sleep and activity
SLEEP COACHINGExplore available sleep duration, stages and score
WORKOUT + MEAL IDEASGenerate a starting point, then review and make it your own
FOOD PHOTO ESTIMATESEstimate calories and macros from a selected food photo locally
REVIEW BEFORE SAVINGCheck portions, ingredients and generated suggestions before using themON DEVICE
CONTEXT, NOT GENERIC ANSWERS
With your permission, Grindline grounds its AI in your profile, today’s nutrition, workout plan, tasks, recovery, sleep, and Apple Health activity. Requests stay on your iPhone.
WHAT GRINDLINE AI HANDLES
From signal to next move.
Apple Intelligence uses the context you choose for coaching and generation throughout the day.
Morning briefing
Your day, summarized
AI chat coach
Ask from your own context
Training insights
Consistency and intensity
Recovery insights
Sleep, HRV and activity
Sleep coaching
Last night, explained
Workout generation
Built for your goal
Meal plan generation
Based on your goals and progress
Food photo analysis
Nutrition estimated on your iPhone
8 CONNECTED COACHING TOOLSFitness guidance only. Not medical advice.
07 / CONSISTENCY
The line only works
if you keep it moving.
Track workouts, hydration, meal logging, and supplements. See current and longest streaks, totals, and the perfect-day heatmap. If you skip a workout, record the reason and keep your workout streak going.
SAMPLE / CONSISTENCYHABIT HISTORY
MONTUEWEDTHUFRISATSUN
08 / THE FULL PICTURE
Open the
real product.
Native iPhone app screens with illustrative sample data. Move through the carousel, then open any card for a closer look.
BROWSE OR OPEN A SCREEN
09 / EARLY TESTER FEEDBACK
Tested in
real routines.
Three people used Grindline while it was being built. They chose to stay anonymous; their feedback is shared with permission.
Finally, a workout app that isn’t a headache!
I’ve tried so many fitness apps, but most of them are either too cluttered or just plain boring. This one is genuinely fun to use! The interface is clean and not complicated at all, which is a huge relief when you’re already tired and just want to get your workout in. The workout generation feature is a game-changer—it saves me so much time planning and actually gives me great variety. Highly recommended!
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PUBLIC BETA / iOS
Put your whole day
on one line.
Grindline is now on TestFlight. Download the beta and make it part of your day.
Public beta for iPhone. Available now.
Open the link on your iPhone. Apple will guide you through installing TestFlight and Grindline.