1 · Set Up Plan
Deliberately rough: expert-tier planning lives here as gaps
Main story
As a user, I want to set up a training plan in order to structure my workouts.
"I want to configure a day: add exercises, name it, tweak the details."
Create / rename / delete training day
Add exercise with sets, target reps, weight step & rest duration
Edit or remove any exercise. Removing it from a day keeps its history
Drag to reorder exercises within a day (a superset moves as one block, its exercises reorder only inside it)
"I want to reuse an exercise in another day without typing it in again."
Exercises are modules: a searchable picker adds an existing one to another day, history stays shared
↔ marks a module used in several days. Changing its sets, reps, step or rest asks: everywhere, or its own exercise here
A pure rename applies everywhere and never splits the history
"I want to pair exercises I do back to back, without rest in between."
Create a superset: long-press an exercise's drag handle, pick 2 or more. Differing sets or rest are asked once, bundled
Superset is its own module: reusable across days (↔), fork question when edited while shared
Superset shows as a box in the plan: tap to edit, add/remove exercises, dissolve
"I want to activate a new plan when my focus changes, without losing old history."
Several plans, exactly one active. Switch with one tap; a new plan starts empty or as a copy, history stays intact
By designPeriodization across plans as a feature of its own. Plans are built from modules, so running them one after another already is the periodization (working hypothesis, see README)
"I want to duplicate or template a day instead of re-entering everything."
Not yetCopy / duplicate a training day
2 · Start Training
Main story
As a user, I want to know what's next and get moving with zero decisions in order to not lose time or momentum.
"I don't want to pick a day every time. Just tell me what's next and let me start."
Focus View (Home): shows the next suggested day directly, no picking required
Suggestion is self-healing: recomputed from whichever day was actually last trained, no manual reset
Direct "Training starten" from Focus View, skips the preview screen entirely
Day's exercises on home: first three visible, the rest behind a toggle. A superset is one line
Rolling 7-day activity strip, colored by training day type, always filled (never blank at week start)
Today's status on home: "trained" or "active rest logged" chip when applicable
Nudge on home after 3 or more days without training
"If I want to see everything or train something different, that should be one tap away."
Overview screen ("Alle Tage"): last volume, trend, 4-week activity dots, "Empfohlen" tag
Day preview (exercise list + last weights) shown when manually picking a day
By designTraining reminders / push notifications. The app doesn't nag, I open it when I train
"I forgot to log a day and want to add it afterwards."
Tap an empty day in the week strip: log a past training (no live timer, saved to that date) or Active Rest
One entry per day: a day that already has one can't be backfilled twice
"I want to pick up where I left off if I had to stop mid-session."
Draft-resume takes priority on Focus View whenever an interrupted workout exists
Resume restores timer + all entered values
Discard option to start fresh
"Some days I'm not training. I still want that to count without pretending it was a workout."
Active Rest: log today as recovery from Focus View. Counts for streak/heatmap, excluded from PR/progression
3 · Log Training
Main story
As a user, I want to log every set quickly and accurately, with minimal friction in order to have a reliable record without it feeling like a chore.
"I want to know what I lifted last time. No separate reference line, just already in the field."
Inputs pre-filled with last session's values on start: reference and starting point in one
"I want to enter reps and weight fast. Tapping +/- is easier than typing during a workout."
Reps ±1 stepper: standard input for every exercise, no special-cased modes
Weight stepper (exercise-defined increment, e.g. 2.5 kg for dumbbells, 5 kg for cables)
Direct numeric input also available
Entering a value commits the set. The ✓ only starts the rest, it logs nothing.
"I want to rest between sets without losing my phone or my train of thought."
✓ per set confirms it with a short animation and starts the rest timer, inline under that set. Duration configurable per exercise.
Vibration + visual alert at zero, tap the ✓ again to stop early
No rest timer when backfilling a past day
Screen stays awake during the workout (Wake Lock, re-engages after backgrounding)
"I want to run a superset as one flow."
One block, rounds alternate the exercises, one ✓ per round, rest only after the round
Superset exercises keep their own history, labelled "· Superset" in PRs and progression
"I want to know instantly when I hit a personal record."
⚡ Weight PR badge on set (debounced, auto-removes)
⚡ Volume PR badge on set
🏆 Exercise session PR glow on the whole block
"I don't want to lose everything if I accidentally close the app mid-workout."
Auto-save draft on every value change
Self-correcting timer (survives backgrounding)
Abandon confirmation if sets have been logged
Not yetNotes per session or per exercise
By designRPE (Rate of Perceived Exertion): standard in strength apps, not needed for how I train, and it costs a tap per set. Has to earn its place.
4 · Finish & Review
Main story
As a user, I want to end my session and see a summary in order to feel the satisfaction of what I just did.
"I want to see the key numbers (time, volume, sets) in one clean view."
Summary card: sets, duration, exercises, total volume
Uncommitted sets filtered out, only real work is counted
"I want to know if today was my best session ever for THIS training day, not some global number."
Per-day PR detection (best session ever for this day, replaces the old global all-time comparison)
🏆 icon + pulsing badge naming the day if it's a per-day PR
"I want to share my session or save a screenshot to show progress."
Not yetShare / export session summary
5 · Track Progress
Main story
As a user, I want to see if I'm getting stronger over time in order to stay motivated and train with purpose.
"I want to look back at past sessions to remember what I did."
Full session history of the active plan under Statistik → Verlauf (collapsible, set pills per exercise)
Tap a trained day in the home week strip to jump straight to that session
"I want to know my all-time best weight and volume per exercise."
PRs tab: max weight + best set volume per exercise
"I want a chart that shows whether my lifts are going up over time."
Progression tab: weight over time + volume over time (hand-rolled SVG charts)
Exercise selector to switch between movements
A module's chart runs across plans: the periodization lives in the modules, so the cycle stays visible after a plan switch
"I want to see how consistently I'm training, broken down by day, so I stay accountable."
Konsistenz: 16-week heatmap, color-coded by training day type with a legend
Distinct neutral color for Aktive Erholung entries
Avg sessions/week · current streak · total sessions
6 · Manage Data
Main story
As a user, I want my training history to always be there in order to never lose months of logged workouts.
"I want the app to save everything automatically. I shouldn't have to think about it."
Auto-save to localStorage on every change (stable key: tvrd_db, never changes)
Versioned schema with sequential migrations. v2 moved exercises out of the days into a shared module catalog, old backups get migrated on import
Custom domain tvrd.app: bookmark / URL changes no longer look like data loss
Works offline (service worker: fresh page when online, last cached version when not)
"I want to back up my data and restore it if something goes wrong."
JSON export (dated backup file), tucked away under Plan → Erweitert
JSON import with validation + migration
Not yetAuto-backup reminder after N sessions
"I want my data to follow me if I get a new phone."
Not yetCloud sync: data tied to account, not device (e.g. Supabase)
By designUser management & accounts: I'm the only user. Would add if a friend wants to try it, or once cloud sync earns its place.