Log fast. Lose nothing.
Know if the work is working.
SetKeep is the quiet, private strength instrument built for lifters who already know their routine. Sub-second set completion, zero cloud round-trips, and calibrated progress telemetry instead of dopamine loops and cheerleading.
Barbell Pendlay Row
Target: 4 × 6-8 @ RPE 8.0What we deliberately refuse to build.
Most fitness software is designed to maximize daily screen-time for advertisers or to sell monthly subscriptions with celebrity workouts. SetKeep is an offline calculation instrument designed to get out of your way in 5 seconds.
LLMs have no kinesthetic awareness of your tendons or training history. We optimize for fast custom routine templating and repeat-first execution.
Your lifts are between you, the bar, and your central nervous system. No public vanity feeds, influencer sponsorships, or algorithmically sorted gym selfies.
Arbitrary daily streak fire emojis incentivize under-recovery and injury. We analyze multi-week density, volume-load tolerance, and chronic training momentum.
Never stand beside a squat rack waiting for a server to acknowledge your third set. All commits execute directly on local disk with zero blocking calls.
The Progress Signal: Triangulated Empirical Truth.
Single metrics lie. A scale drop could be muscle loss or dehydration; a flat bench press could be fatigue masking adaptation. SetKeep correlates three calibrated data streams into clear, unemotional telemetry.
Measures completion velocity against intended microcycle frequency. Discards calendar-week resets in favor of rolling density.
Synthesizes Brzycki & Wathan formulas to compute true estimated 1RM changes across primary compound benchmarks without 1-rep test fatigue.
An exponential moving average removes daily water weight, glycogen depletion, and sodium noise to reveal actual tissue composition changes.
Objective mathematical observation. No motivational fluff. When compound strength trends upward during a negative mass slope, lean tissue is empirically preserved.
Built for chalked fingers and elevated heart rates.
Every millisecond of UX friction between sets drains focus from your next working effort. SetKeep eliminates nested pickers and multi-step dialogs.
1-Tap Pre-Populated Rep Target
Set rows pre-fill from your historical prescription. If you hit your planned reps, tapping the amber box commits the set and kicks off the timer instantaneously.
Hardware Plate Resolver
Configured to your gym's exact plate inventory (25 → 1.25 kg + collars). Never perform mental arithmetic while oxygen-deprived.
Quiet Haptic Rest Counter
Discrete mechanical vibration alerts at 30 seconds and at expiration. No abrasive klaxons or loud ringtones interrupting gym focus.
Local SQLite First. Always.
Your physical progress belongs to you, not an ad exchange. We treat your personal workout logs with the exact cryptographic and architectural seriousness of a financial ledger.
User completes a set or modifies a training routine in the native iOS / Android runtime.
A WAL-mode transaction commits instantly to raw device flash memory. No network connection required.
The UI confirms recorded state, updates rest timers, and calculates composite 1RM trajectories in memory.
Optional background sync asynchronously resolves across devices when Wi-Fi is detected.
Export complete uncompressed SQLite databases, CSV rows, or NDJSON manifests at any moment.
Migrate 5 years of training logs in under 10 seconds.
SetKeep has native parser definitions for Strong, Hevy, JEFIT, and generic CSV schemas. No lost PRs, no orphaned routines, zero manual re-entry.
Simple, honest pricing.
Your workout history is never held hostage behind a paywall. The core offline instrument is free forever.
Complete offline strength tracking instrument for local storage with zero feature limitations on logging.
- Unlimited local workout logging & custom routines
- Full offline SQLite database on your device
- Core Progress Signal (Adherence matrix + e1RM)
- Built-in Olympic plate resolver & auto rest timer
- Complete CSV / JSON / SQLite archive export
For analytical lifters demanding encrypted multi-device synchronization and advanced compound phase synthesis.
- Everything in Core plus zero-knowledge sync
- Full 3-signal synthesis (Adherence × e1RM × Mass)
- Training Phase tags (Lean Cut, Recomp, Peak Block)
- Automated continuous Strong / Hevy cloud imports
- Biometric lock (FaceID / Fingerprint log security)
Respect your training.
Own your strength data.
Install the zero-tracker strength progress instrument today. Works 100% offline out of the box with zero account setup required.