Strong earned its reputation for a reason: it is a focused, polished strength tracker that serious lifters genuinely trust. But the moment you run, cycle, care about recovery, or want to know if your body is ready to train hard today, Strong has no answer. It logs what you lifted. It does not tell you whether you should have lifted at all.
Fitiv is the alternative for athletes who want their strength tracking embedded in a complete training picture — one that includes HRV readiness, recovery scores, training load, and cardio in a single app.
What Strong Does Well
Acknowledging what you would be leaving is worth doing honestly.
Strong's exercise library is among the largest in any strength app — over 400 exercises with video demonstrations, filterable by muscle group and equipment. Powerlifters and bodybuilders who train with specialized movements will find them here. The set-logging flow is fast and minimal: load exercise, enter weight and reps, hit confirm, rest timer starts. For athletes whose entire focus is barbell or machine work, that simplicity is a genuine strength.
Strong's program template library covers popular training systems — 5/3/1, Starting Strength, GZCLP, hypertrophy programs — with more depth than most competitors. And the plate calculator, which tells you exactly how to load a bar to a target weight, is a small but genuinely useful feature for regular barbell athletes.
If you train exclusively with weights and have zero interest in cardio tracking, HRV, or recovery scores, Strong is a well-built tool for that narrow job.
What Athletes Find Missing in Strong
No readiness or recovery data
Strong logs your workouts. It cannot tell you if you are ready to train. There is no HRV measurement, no recovery score, no fatigue tracking. If you show up to the gym tired, overtrained, or under-recovered, Strong will dutifully record your session without flagging that you are compounding a problem.
Athletes who use WHOOP, Athlytic, or Oura alongside Strong are essentially paying for two separate subscriptions to cover what Fitiv handles in one.
No cardio or outdoor tracking
Strong is a gym app. The moment you leave the building — for a run, a bike ride, a rowing session — you need a second app. Most athletes train in multiple modalities. NSCA data consistently shows fewer than 20% of recreational athletes train in a single mode exclusively. If you ever run, that is a second app. If you ever cycle, a third. Fitiv handles all of it.
Training load has no cardio context
If you ran a hard tempo run Tuesday, Strong has no idea when you squat Wednesday. It logs the squat in isolation. Fitiv's training load calculation accounts for all stress — your runs, your lifts, your recovery between them — in a single rolling number that reflects your actual accumulated fatigue.
What Fitiv Adds That Strong Does Not
HRV readiness score — Each morning, Fitiv reads your overnight heart rate variability from Apple Watch or a Bluetooth chest strap and converts it into an actionable readiness number. High readiness: push hard, set PRs. Low readiness: reduce volume, protect adaptation.
Recovery score — Combines HRV trend, sleep quality, and training load history into a single daily metric. This is the number that tells you how recovered you actually are, not how recovered you feel.
Training load (TRIMP and TSS) — Every workout, cardio and strength, contributes to a rolling load metric. Fitiv shows your acute load (7-day), chronic load (6-week), and the balance between them — the same metrics used by professional endurance coaches.
GPS running and cycling — Full GPS tracking with heart rate zones, pace, distance, elevation, and post-workout load calculation. Integrated alongside your strength sessions in the same app.
Bluetooth HR monitor support — Polar H10, Wahoo TICKR, Scosche Rhythm+, and other BLE heart rate monitors connect directly to Fitiv for more accurate HR and HRV data than wrist-based optical sensing.
Feature Comparison: Fitiv vs Strong
| Feature | Fitiv | Strong | |---|---|---| | Strength tracking (sets/reps/weight) | Yes | Yes — best-in-class | | Custom exercises | Yes | Yes | | Exercise database | Broad | Very large (400+) | | Apple Watch integration | Deep — biometrics + logging | Basic logging | | Progressive overload tracking | Yes | Yes | | 1RM calculator | Yes | Yes | | Plate calculator | No | Yes | | Program templates | Yes | Extensive library | | HRV readiness score | Yes | No | | Recovery score | Yes | No | | Training load (TRIMP/TSS) | Yes | No | | GPS running/cycling | Yes | No | | Heart rate zones | Yes | No | | Bluetooth HR monitor support | Yes (Polar H10, Wahoo TICKR) | No | | Garmin support | Yes | No | | VO2 max tracking | Yes | No | | Sleep tracking integration | Yes | No | | Community challenges | Yes | No | | Price | Free + premium from $4.99/month | Free + $9.99/month |
Who Should Switch from Strong to Fitiv
Fitiv is the right Strong alternative if:
- You train for both strength and cardio and want one app for both
- You want a readiness score that tells you whether to go heavy today
- You use a Bluetooth HR monitor (Polar H10, Wahoo TICKR) or Garmin alongside your lifting
- You want training load to reflect your runs and rides, not just your gym sessions
- You want to pay less and get more coverage
Who Should Stay on Strong
Strong remains the better choice if:
- Your training is exclusively gym-based with zero cardio component
- You need the deepest possible exercise library for specialized movements
- You rely on specific program templates from Strong's template library
- The plate calculator is a daily-use feature for your barbell training
Frequently Asked Questions
Does Fitiv import workout history from Strong? Fitiv does not currently import historical data from Strong. Your Apple Watch will begin building a training history from your first Fitiv session, and most metrics — particularly HRV baseline and training load trends — become meaningfully accurate within 2–4 weeks.
Can Fitiv replace both Strong and a recovery app like Athlytic? Yes. Fitiv is designed specifically to replace the combination of a gym tracker plus a separate recovery app. If you currently use Strong for lifting and Athlytic or WHOOP for readiness, Fitiv consolidates both into a single subscription.
Does Fitiv work for pure strength athletes who do not run? Yes. Even if you never do cardio, Fitiv's HRV readiness and recovery scores will tell you whether to push hard or pull back on a given training day. The readiness score is particularly useful for strength athletes because going heavy when under-recovered produces more injury risk than fitness gain.
How does Fitiv handle rest timers? Fitiv includes configurable rest timers accessible from both iPhone and Apple Watch. You can set default rest periods per exercise and get a wrist tap when the rest period ends — without needing to look at your phone.
Is Fitiv's exercise database large enough for serious lifters? Fitiv covers the primary compound movements and accessory exercises that most gym athletes use regularly, with the ability to add custom exercises. For specialized powerlifting movements or a specific accessory you do not find, you can create a custom exercise. Strong's database is larger, but for most training programs, Fitiv's coverage is sufficient.
