The only fitness app built for the peptide community.
Join the 4,124 on the waitlist ● Coming soon

Train smarter. Cycle cleaner. Progress faster.

The first training app built around your peptide protocol — workouts, dosing, and bloodwork that actually talk to each other.

Every waitlist signup gets an exclusive launch-day code in their inbox.
iOS Android COMING THIS SUMMER TO IOS & ANDROID
The thesis One app for the whole stack

Other apps log. Epti connects.

Sleep talks to training. Labs talk to your plate. Protocol talks to recovery. One missed dose, one rough night, one new lab — and every recommendation re-tunes.

How it works

From your first vial to your best lift in minutes.

01 / ONBOARD

Onboard your stack.

Tell Epti your goals, current protocols, and training history. Add vials with our guided flow — concentration, units, reconstitution math handled for you.

Vial
5mg
BAC
2mL
Per unit
50mcg
02 / TRAIN

Train with an engine that learns you.

Log workouts, doses, sleep, and bloodwork. Our adaptive engine adjusts volume, intensity, and nutrition targets based on how you actually respond.

72%
RECOVERY
Adjust top set −5%
03 / SHARE

Share, compare, compete.

Follow friends, borrow their protocols, join private circles, and watch your biomarkers and PRs trend in real time.

Inner circle · 8 athletes
3 SHARED PROTOCOLS
Adaptive engine Vial math Dose timing Bloodwork overlays Cycle compare Coach E Private circles HRV-aware programming Adaptive engine Vial math Dose timing Bloodwork overlays Cycle compare Coach E Private circles HRV-aware programming
Dedicated sport modes 10 built-in · more every cycle

The peptide community runs, hoops, rallies, rides, fights, swims. We don't just dose — we train, taper, and compete. Epti is for the whole calendar.

Epti is for the hoopers. runners. cyclists. fighters. swimmers. footballers. picklers. gridironers. tennis players. spikers. gym rats. bodybuilders. athletes.

Each mode is a full tracker on its own
9:41
Lift mode

Strength training, finally done right.

Volume, frequency, and intensity that adjust to your protocol phase — generate the mesocycle, run the session, log every set with RPE, and let the program shift with the stack you're actually running.

01 Programs a coach would actually write
Tell Epti your goal, experience, weekly availability, and equipment — get a complete mesocycle structured the way a coach would write it, not the way a workout generator would spit it out.
02 Borrow any program and Epti reshapes it for you
Copy a friend's, creator's, or coach's block with one tap — their structure, your weights, your protocol adjustments applied automatically.
03 Set-by-set logging that respects your dose schedule
Weight, reps, and RPE with auto-rest, last-session reference, and plate math — plus dose-day load adjustments so heavy days don't land on the wrong injection.
04 Advanced prescriptions, natively
Supersets, circuits, AMRAP, drop sets, and tempo work handled directly in the runner — not bolted on with notes in the comment field.
05 Stagnation flags before you plateau
Volume, frequency, and intensity tracked per muscle group — Epti flags when a group has stopped responding so you adjust before you waste another mesocycle.
06 Train with a partner without texting weights back and forth
Buddy workouts share sets in real time across both phones, with Epti scaling the load to each person's protocol phase so the same workout fits two different stacks.
Endurance

Built for endurance, too.

Running · Cycling · 6 more sports Read more Read less
Epti Running mode: Finding rhythm — 41 mi this week, 9 runs, 8:15 avg pace, today's Lace Up Easy Run prescription
Running

Running, structured the way coaches actually program it.

From easy and recovery to fartlek and race day — every session tagged, paced, and overlaid on weekly mileage.

  • 01Race predictions from real paced efforts. 5K, 10K, half, and marathon estimates based on your recent intervals and tempo work — not weekly mileage averages.
  • 02Training load that tracks acute, chronic, and freshness. See when you're undertrained, overtrained, or peaking — and let Epti pick tomorrow's run from where you actually are.
  • 03Shoe rack with retirement alerts. Per-shoe mileage tracking that flags retirement before the foam goes dead and injury risk climbs.
  • 04Interval builder for structured workouts. Warmup, repeats, cooldown — paced to your current fitness, not arbitrary targets.
  • 05Tomorrow's run, picked for you. Recovery, hard day, long run, or rest — chosen from your load, recent history, and where you are in your protocol phase.
Epti Cycling mode: On a roll — 149 mi this week, 7 rides, 17.2 avg mph, 7700 ft climb, today's Roll Out casual ride prescription, bike garage with Tarmac SL7 and Diverge service alerts
Cycling

Cycling, with a garage that knows your bikes better than you do.

Casual to gravel to interval — every ride logged against the right frame, the right zone, and the right protocol phase.

  • 01Bike garage tracks every component. Chain stretch, tire mileage, brake pads, and service intervals — per frame — so you know what's due before something breaks mid-ride.
  • 02Climbing summary with rate and biggest efforts. Total elevation, biggest climbs of the week, and ascent rate trending against your fitness curve.
  • 03Power and heart-rate zone intervals. Builder for structured trainer sessions and outdoor efforts — set the zones, ride the workout.
  • 04Speed and ride-mix trends. See your easy-to-hard ratio week over week, not just total mileage — so the program stays balanced.
  • 05Indoor mode for trainer rides. Trainer and Zwift sessions logged without GPS — no broken routes, no fake distance.
Also built for
  • Swim
  • Basketball
  • Racquet
  • Combat
  • Soccer
  • Volleyball

Each sport gets its own logging engine and dedicated mode — same data model, same Pep AI, sport-specific structure.

Your stack
Protocols

Every vial. Every dose. Every cycle. Tracked.

Add a vial in 30 seconds. Epti handles the reconstitution math, calculates units to draw per dose, tracks remaining volume, warns before you run out, and logs every injection with site rotation and reminders.

  • 01Reconstitution and dose math, done for you. Enter the vial, the BAC water, and the target dose; Epti tells you exactly how many units to draw and shows it on a labeled syringe so there's no mental math at 6am.
  • 02Reminders that know your protocol phase. Pre-dose, due, late, and skipped states with surface alerts that respect timing windows — not just calendar pings that fire whether you're loading, cruising, or cycling off.
  • 03Site rotation that prevents scar tissue and lipohypertrophy. An interactive body map tracks every injection by site, depth, and angle, then routes the next dose to the spot that's had the longest recovery.
  • 04Side effects linked to the dose that caused them. Log symptoms by severity and Epti correlates them with compound, dose, timing, and stack — so you can see whether the headache is the Tirzepatide or just your week.
  • 05A protocol history that actually compounds. Active, paused, and archived cycles in one view, with cost-per-cycle, total volume injected, and outcome notes — so cycle four learns from cycles one through three.
Protocol detail: Reta Cycle 2 — Recomp Finish, Retatrutide vial 1.36 mg current level, 90-day medication chart
Compound library

Every peptide, researched before it's logged.

A live, editorial library of every compound in the community — reconstitution math, half-lives, side-effect profiles, vendor COAs, and the studies behind the claims. So your protocol starts on something more than a Reddit thread.

N°01 Weight loss Retatrutide
3.4K users ↑ 318 this week
N°02 Weight loss Tirzepatide
1.8K users ↑ 56 this week
N°03 Healing & recovery GHK-Cu
1.6K users ↑ 61 this week
  • 01Full monograph per compound. Mechanism, half-life, common protocols, side-effect profile, and links to the actual studies behind each claim — not just dosing tables copy-pasted from a forum.
  • 02Stack checker for interactions and overlap. Plan a stack and Epti flags compounds that compete for the same receptors, share side-effect profiles, or push the same biomarkers — before you run the cycle, not after.
  • 03Built for the compounds you actually use. 70+ compounds across weight loss, recomposition, recovery, and longevity — updated as the research and the community evolve.
9:41
Epti Discover tab showing the Beginner's Guide to peptide research and trending compounds Retatrutide, Tirzepatide, and GHK-Cu
Close Search
what foods should i avoid on reta
×
All Guides Exercises Foods
Ask Pep

on retatrutide, skip fried and greasy foods like fries, pizza, or donuts since they slow digestion even more and amp up nausea. also dodge sugary stuff, refined carbs such as white bread or rice, processed junk, and alcohol to keep side effects low and support your weight loss to 175lb. with your low intake today at 580 cal and 60g protein, lean proteins like chicken or fish pair better to hit that 150g target without gut issues.

Continue in chat
✦ Keep exploring
Retatrutide Compound
Triple GLP-1/GIP/Glucagon Agonist
Lean Protein Ideas Low Cal Recipes
Ask Pep · AI

Search anything. Get an answer that knows your protocol.

Pep is the search-first AI woven into every screen of Epti — compounds, foods, exercises, side effects. Every answer reads your active stack, today's macros, sleep, and bloodwork before it speaks. No generic chatbot energy.

"what foods should i avoid on reta…"
Pep cross-references your retatrutide protocol and today's 580 kcal / 60g protein intake — then warns about fried foods and recommends lean protein to hit your 150g target.
"show me lifts that fit my current recovery"
Reads your HRV 48, last night's 5h 42m sleep, and today's planned volume — then surfaces matching workouts from the library and friends' logs.
01
Search-first. Tap the bar from anywhere. No menus, no scrolling — just type what you need.
02
Cited from your data. Every claim points to a compound, a meal, a lift, or a lab in your own log.
The engine
Adaptive engine

A program that rewrites itself around you.

Every morning, Epti reads last night's recovery, your active stack, and what's on the board — then writes a Daily Brief in plain English explaining exactly what's changing today and why. Tap to accept the adjustments, or skip what doesn't fit.

  • 01Adjustments you can accept, skip, or modify. Volume, calories, water, and bedtime suggestions arrive as recommendations, not prescriptions — one tap to apply, one tap to ignore, never imposed without your sign-off.
  • 02Macros and training load that match your phase. Whether you're in a fat-loss block, recomp, gaining phase, or maintenance, Epti adjusts protein floor, calorie target, and training volume to match what you're actually trying to do this cycle.
  • 03Strength tracked against your protocol. Every PR plotted against the cycle that produced it, alongside sleep, bodyweight, and HRV — so you can see exactly which protocols built strength and which just made the scale move.
  • 04Drift detection before you waste a cycle. If your weight, strength, or biomarkers stop responding the way your protocol predicts, Epti flags the divergence early — so you can adjust mid-cycle instead of finding out at week 12 that nothing worked.
9:41
Daily Brief: Recovery's tapping the brakes — Leg Day at half today. AI narrative explaining HRV, sleep, and stack context, plus a Today's Adjustments task list with Apply All / Skip All actions
Nutrition

Snap it. Scan it. Speak it. Logged.

Four ways to capture a meal, none of them painful. Photograph the plate, scan a barcode, describe what you ate in plain English, or tap a saved favorite. Epti reads the calories and macros, then nets them against today's training burn for a clean running delta.

  • 01Logging that doesn't get in the way of eating. Snap a photo, scan a barcode, type what you ate, or speak it — Epti picks the method that works for the meal and gets out of the way.
  • 02Restaurant and packaged food, solved. Barcode and restaurant QR scanning for chain meals and packaged food, with macros that actually match the label.
  • 03Built for what we actually eat. Small meals, partial portions, and "I only had half of it" — text and voice logging work better than photo recognition when the meal is two eggs and half a piece of toast.
  • 04One-tap repeats for the meals you eat every day. Save your three breakfasts, four lunches, and rotation of dinners — log a full day in under 30 seconds once your patterns are in.
  • 05Calorie targets that respect your peptide phase. Fuel in minus training out, with protein floors and calorie targets adjusted for your phase — so you don't accidentally under-eat through a loading week and lose the muscle you're trying to keep.
9:41
Epti Daily Intake screen: 580 of 2,200 kcal ring, protein/carbs/fat macro bars, and Today's Read AI insight
Body & bloodwork

The scale and the bloodwork — finally in one place.

Track body composition and biomarkers side-by-side. Watch weight, BMI, and body-fat trend against testosterone, IGF-1, A1C, lipids, and inflammation — every metric overlaid on the protocol that drove it.

  • 01Daily weigh-ins, weekly truth. Daily weigh-ins with weekly trend smoothing — see whether you're actually on pace, not just whether yesterday was up or down.
  • 02Wearable data, automatically. HRV, sleep, RHR, and activity sync from Apple Health, Whoop, Oura, and Garmin — the inputs your adaptive engine actually needs, without you logging them.
  • 03Lab results that compound over time. Upload a lab PDF or paste values manually — Epti normalizes biomarker names across Quest, LabCorp, and private labs so a panel from 2024 lines up with one from this morning.
  • 04Alerts in plain English, not lab jargon. Out-of-range and anomaly alerts written like a clinician would explain them — "your ALT is up 40% since starting Retatrutide; here's what that usually means, and when to talk to your doctor."
  • 05Cycle-over-cycle comparison. Compare any two cycles side-by-side and see exactly which biomarkers and metrics moved, by how much, and whether the protocol actually did what it was supposed to.
COMPOSITION—VOL. 01

Maintain.

Maintenance calories
Start
132.6lbs
Now
131.1lbs
Goal
130.0lbs
PROGRESS
1.1 lbs to go
0.7 lbs this week
BMI
Normal
−0.7 lbs
This week
Weight trend
GOAL · 130.0
APR 17APR 24MAY 1MAY 8TODAY
Coach E
You're tracking 0.1 lb/wk under maintenance. At this pace you'll hit 130.0 lbs in 12 days — sleep avg held at 7h 04m this week.
May 27, 2026
Avg. weekly: −0.1 lbs
+ Log a panel
All Hormones Metabolic Lipids Thyroid Inflammation
1 out of range
Testosterone (Free)
7.6pg/mL
Hormones↓ 0.6 vs last
A1C
4.9%
Metabolic↓ 0.1 vs last
Fasting Glucose
82mg/dL
Metabolic↓ 2 vs last
HDL
76mg/dL
Lipids↑ 4 vs last
Community

See what your people are running.

A feed worth scrolling.

Add friends to see their active stacks, this week's PRs, and the dose they ran this morning — all in one place. Tap a protocol to borrow it. Compare your week side-by-side. And when you want a bigger room, drop into public groups built around how you train, or spin up a private circle with the people you trust.

A timeline of real days from people on real protocols — the lifts, the labs, the bad sleep, the breakthroughs. Tap any post to see the stack behind it. No leaderboards, no engagement bait.

Get early access

Ready to train like your protocol depends on it?

Every waitlist member gets an email with an exclusive launch-day code — your reward for being early. We're inviting users in batches as we build out.

One code per email · sent the day Epti goes live · founding-member rate, locked for life
iOS Android Coming soon to iOS & Android
Syncs with Apple Health · Whoop · Oura · Garmin
epti

The only fitness app built for the peptide community.

iImportant · please read

Epti is a personal fitness, training, and self-tracking tool. It is not a medical device and does not provide medical advice, diagnosis, or treatment. Information, calculations, protocol templates, and AI-generated suggestions shown in the app are for general informational and personal-tracking purposes only and are not a substitute for professional medical advice from a qualified physician, pharmacist, or other licensed healthcare provider.

Always consult a licensed healthcare professional before starting, changing, or stopping any training program, nutrition plan, supplement, medication, or peptide protocol — including any compound logged or referenced inside Epti. Never disregard professional medical advice or delay seeking it because of something you read in this app or on this site. If you think you may have a medical emergency, call your local emergency number immediately.

Epti does not sell, source, prescribe, or recommend the purchase of any medication, peptide, or controlled substance. Users are solely responsible for the legality of any substance they choose to track and for compliance with the laws of their jurisdiction and the rules of any sport, league, or anti-doping body they participate in.

© 2026 Epti, Inc. Not medical advice · Consult your physician before any protocol