Today's call
Home shows whether the plan still fits
Overnight recovery (richest on Garmin), form, fitness, load, and today's session on one screen. New watch activities appear as they download, so you decide before you leave the house.
About DataFrame
Garmin and Polar tell you what you did. WHOOP tells you how recovered you are. TrainingPeaks tells you what was planned. DataFrame tells you whether today's plan still fits your recovery - and whether the quality of the work is trending the right way.
The decision layer on top of your training stack - Garmin, WHOOP, Polar, TrainingPeaks, and MyWhoosh - free, private, and built for endurance and hybrid athletes.
After you train
Open a session and see if the work landed
Plan vs done, the hard block, zones, and whether repeats faded. Not only the session average - the quality of the work.
Recovery
See if last night still supports today's work
Training readiness, sleep, HRV, Body Battery, and stress from Garmin wellness. Polar syncs activities, not these overnight scores - keep Flow for Polar's own recovery views.
Analysis
See if the quality work is trending
Matching interval sessions over months: pace, heart rate, and efficiency. Not only last week's average - whether the hard work is moving.
Weeks
Line up two weeks, day by day
Peak HR, resting HR, and HRV overlay Monday to Sunday. Open Compare weeks from Calendar, or from a race to put the week before next to race week.
Not a replacement
Keep your watch app for the device and wellness. Link Garmin Connect (recommended) or Polar as your primary watch - one at a time. WHOOP can sit alongside Garmin for workouts, sleep, recovery and strain. Optionally connect TrainingPeaks for coach plans or TP-only sessions (for example Zwift), and MyWhoosh for indoor rides captured there. DataFrame syncs that into one athlete-owned dashboard - including activity, day, and week share cards.
vs Garmin Connect
Deeper coach-facing analysis: quality blocks, week compare, brick fade, CP / W′bal, today's plan with form and fitness, multi-source plan vs actual, hybrid sport framing, plus activity/day/week share cards and privacy-controlled public links. Connect stays the main source for Garmin devices and overnight wellness (sleep, HRV, Body Battery, readiness).
vs Polar Flow
Keep Polar Flow for the Polar watch and Polar's own recovery views. DataFrame imports Polar exercises and FIT charts, then adds quality-block compare, week compare, brick fade, hybrid sports, and share cards on those sessions. Overnight Body Battery and Training Readiness in DataFrame need Garmin. Plan push to Polar is not available yet.
vs WHOOP
Keep WHOOP for the band, recovery, strain, and sleep. DataFrame adds today's plan check, quality-block compare, week compare, hybrid sports, and share cards. WHOOP can sit alongside Garmin - watch sessions stay on Garmin when both logged the same workout. Overnight recovery prefers WHOOP when it has data for the day. There is no plan push to WHOOP.
vs TrainingPeaks
Not a TrainingPeaks replacement for athletes, but coaches get a free portal to invite athletes, see who needs a look, assign sessions and blocks, and read recovery against each athlete's own range. The edge is watch-native depth (Garmin recommended, Polar supported), hybrid sports (HYROX / CrossFit), recovery to adaptation, free open sign-in, and share-ready cards. Import TP coach plans and TP-only sessions (deduped against your watch log); MyWhoosh rides replace matching TP-only copies when both are connected.
Supported integrations
Connect the platforms you already use
Link accounts in Settings. Garmin Connect is the recommended primary watch; Polar is also supported (one watch at a time). WHOOP can sit alongside Garmin for workouts, sleep, recovery and strain - with no plan push to WHOOP. TrainingPeaks and MyWhoosh fill indoor and coach-plan gaps without double-counting the same ride. Google Calendar is a separate opt-in on Calendar. Connect Claude or another AI assistant when you want answers from chat - you choose what it may view or change.
Garmin Connect
RecommendedActivities, sleep, Body Battery, HRV, and readiness from your Garmin watch.
WHOOP
Works with GarminWorkouts, sleep, recovery and strain. Sits alongside Garmin. Overnight recovery prefers WHOOP when that night exists.
Polar
Also supportedActivities and FIT charts from Polar Flow. Overnight wellness stays in Polar's app or needs Garmin.
Connect Garmin, WHOOP, or Polar. One primary watch at a time. WHOOP sits alongside Garmin.
TrainingPeaks
Coach plans and sessions that land in TP (for example Zwift).
MyWhoosh
Indoor rides from MyWhoosh - replaces matching TP-only copies.
Google Calendar
Write planned sessions, races, and logged activities to a DataFrame.fit calendar.
AI assistants
Ask Claude, ChatGPT, Cursor, or another assistant - you choose what each one may view or change.
AI assistants
Ask about your training in plain language
Connect Claude from the Claude connectors directory, or ChatGPT, Cursor, and other assistants. You sign in on DataFrame and choose what each one may view or change - then ask about weeks, sessions, or recovery from the chat.
Highlights
Today's plan
See today's session, how form and fitness may change if you do it, and the expected load.
Quality-block compare
Compare the intervals across sessions the way coaches talk - not only full-session averages.
Compare weeks
Put Monday-Sunday weeks side by side - load, heart rate, sleep, HRV, and Form. Open it from Calendar, or from a race to line up the week before with race week.
Brick history + fade
Same-day bike-run, strength<->run, and hybrid pairs with a fade label on the second leg.
Hybrid sports first-class
HYROX and CrossFit tagging, volume splits, bricks, and muscle-map relevance - not buried as "other".
Smart activity names
Rename on Garmin from suggested titles - quality recipes like 18km run inc 5 x 400m, or sport-aware names such as HYROX cardio session when you train hybrid.
Calendar and Training Plan
Add your own workouts on Calendar. A coach on DataFrame can assign sessions there too. Training Plan is for imported Google Sheet, Garmin Coach, and TrainingPeaks, with planned vs done.
Google Calendar sync
On Calendar, connect Google Calendar to add upcoming planned sessions, races, and logged activities to a DataFrame.fit calendar on your phone. Stop anytime - that removes that calendar.
Ask your AI assistant
Connect Claude, Cursor, ChatGPT, GitHub Copilot, Codex, Gemini, Grok, DeepSeek, or another assistant. You sign in on DataFrame and choose what it may view or change. Connect more than one, with different access.
Nutrition and protein
Daily burn from Garmin, a protein target from your training type, and a food log - scan a barcode or pick from the list.
Activity, day, and week share cards
Share a single activity, a full training day, or a whole week as social cards - square, portrait, Stories, and transparent PNG. Public activity links with optional hidden HR/power, revoke anytime.
Recovery, Quality & Volume
Recovery, Session Quality, and Volume - sleep/HRV, how hard sessions landed, and week-to-week load balance.
Serious physiology
Mean-max, CP / W′, W′bal, aerobic decoupling, and W/kg recomputed from your activity warehouse (Garmin plus TrainingPeaks and MyWhoosh gap fills).
Race toolkit
A/B/C races, finish estimates, race-week Home mode, and HYROX distances when it matters.
Free & athlete-owned
Google sign-in, private per-athlete data, no paid plan - built for athletes who love analysing training.
Common questions
Is DataFrame.fit a replacement for Garmin Connect or TrainingPeaks?
No. Keep Garmin Connect, WHOOP, or Polar Flow for your watch, band, wellness, and primary activities. Optionally connect TrainingPeaks for coach plans or TP-only sessions (for example Zwift), and MyWhoosh for indoor rides captured there. DataFrame.fit syncs that into one athlete-owned dashboard.
What does DataFrame.fit add beyond Garmin Connect?
Today's plan check from Garmin recovery, plan your week onto Garmin with plan vs done after structured sessions, quality-block compare, week compare, optional Google Calendar, brick fade, nutrition and protein logging, hybrid sports (HYROX/CrossFit), plus activity, day, and week share cards with privacy-controlled public links. Polar athletes get quality and week views on Polar Flow activities; overnight wellness scores need Garmin.
Is DataFrame.fit free?
Yes. There is no paid plan. Sign in with Google, Microsoft, or an email code, then link Garmin Connect, Polar, or WHOOP (and TrainingPeaks or MyWhoosh if you need them) in Settings.
Does DataFrame.fit work with Garmin Connect?
Yes. Garmin Connect is the recommended primary watch source. Sign in, link Garmin in Settings, and sync. DataFrame.fit reads activities and wellness from Connect; it does not replace the Garmin app or your watch.
Does DataFrame.fit work with Polar?
Yes. Link Polar Flow in Settings as your primary watch instead of Garmin. DataFrame imports recent Polar exercises and FIT charts. Sleep, HRV, Body Battery, and Training Readiness in DataFrame need Garmin - Polar sync does not import those overnight scores yet. Plan push to Polar is not available yet. Connect Garmin or Polar - not both.
Does DataFrame.fit work with WHOOP?
Yes. Link WHOOP in Settings to import workouts, sleep, recovery and strain. WHOOP can sit alongside Garmin. When both logged the same workout, the Garmin session stays and you still see WHOOP strain and clock on that page. Overnight recovery prefers WHOOP when it has data for the day. There is no plan push to WHOOP. See DataFrame vs WHOOP and Garmin + WHOOP for the side-by-side.
Can I plan workouts onto my Garmin from DataFrame.fit?
Yes. Add workouts on Calendar yourself, paste an AI week, take sessions a coach on DataFrame assigns, or pull a Google Sheet, Garmin Coach, or TrainingPeaks calendar on Training Plan. Training Plan is for imported plans; your own sessions and coach assigns go on Calendar. Structured sessions can be sent to Garmin, then plan vs done shows how the session landed after you train. On Calendar you can optionally send upcoming sessions, races, and logged activities to Google Calendar or Outlook.
Can DataFrame.fit add sessions to Google Calendar or Outlook?
Yes, if you opt in on Calendar. Connect Google Calendar, Outlook, or both. DataFrame creates a DataFrame.fit calendar and writes upcoming planned sessions, races, and logged activities. Change the plan and those events update. Tap Synced with Google Calendar or Synced with Outlook to stop that calendar. Sign-in never grants Calendar access on its own.
Can I use Claude, Cursor, ChatGPT, Copilot, Codex, Gemini, Grok, or DeepSeek with DataFrame.fit?
Yes. Claude lists DataFrame.fit in its connectors directory. You can also connect Cursor, ChatGPT, GitHub Copilot, Codex, Gemini, Grok, DeepSeek, or another assistant. It opens DataFrame so you can sign in and choose what that assistant may view or change. You can connect more than one, with different access. The AI / MCP Server page explains how.
Can I compare whole training weeks?
Yes. Compare weeks puts two to four Monday-Sunday weeks side by side: load, time, sleep, heart rate, HRV, Form, weather, and the sessions in each week. Open it from Calendar, or from a race to line up the week before with race week. Charts overlay session HR, resting HR, and HRV Monday to Sunday.
Does DataFrame.fit support HYROX, triathlon, and brick sessions?
Yes. Every sport you can pick in Settings has a public page, including triathlon, duathlon, Swimrun, HYROX, and CrossFit. Same-day pairs such as bike-run, swim-run, or strength-run show as bricks with fade on the second leg, alongside run, bike, swim, and other endurance sports.
How is DataFrame.fit different from Intervals.icu?
Intervals.icu is a strong fitness and power-analytics site. DataFrame.fit is built around watch-native recovery checks, pushing this week's plan onto your Garmin, quality-block compare, week compare, brick fade, hybrid sports such as HYROX, nutrition, and share cards. Many athletes use both.
Which sports does DataFrame.fit support?
Endurance, racquet, winter, and multisport: run, bike, swim, row, triathlon, duathlon, Swimrun, HYROX, CrossFit, tennis, padel, pickleball, golf, climbing, skiing, and more. Open Sports in the public menu for the full list. Each sport has its own page.