Trainer first. Three other directions.
The shortlist. Choose the missing job before choosing another app. Trainer is our first recommendation for general iPhone strength training; the other options solve different needs. This order is editorial preference, not a measured performance or popularity ranking.
Trainer
Hevy
A natural shortlist option for social sharing and a cross-platform workout log.
Explore Hevy alternativesLiftin’
An Apple-focused log with configurable success and failure progression rules.
Explore Liftin’ alternativesStrengthLog
A free logging foundation with a substantial strength-program ecosystem.
Explore StrengthLog alternatives
What should change when you leave Strong?
Strong’s notebook approach solves a real problem: keeping a known routine and its results close at hand. Leaving it only makes sense if you can identify a job the notebook is not doing for you. Perhaps your workouts are recorded carefully but the next session still starts with a guess. Perhaps you need a plan that fits fewer gym days. A replacement should address that particular friction.
Do not confuse a change of interface with a change of training quality. If your last several sessions show useful progress and you can find your working weights quickly, the tracker may already be doing its job. Compare planning, record portability, and wrist controls before looking at cosmetic differences or assuming a longer feature list will improve your attendance.
Why consider Trainer?
Trainer is designed around the connection between a plan, your recorded work, and a next target you can edit. Starter plans use your days, experience, goals, and equipment; library programs can keep their own schedules. That distinction matters if you are leaving a notebook because you need help building a realistic week rather than more places to type sets.
Trainer’s Strong CSV import is a practical advantage for an existing Strong user. The imported history needs a careful preview, especially when dumbbells, custom movements, and kg or lb conventions differ. Core tracking and history-based next-weight suggestions are free; optional AI guidance is subject to sign-in, consent, and usage limits. The app’s current launch availability is shown alongside the recommendation.

The facts, side by side.
Source inventory recorded October 14–15, 2026. Each field links its official source. Unknown means unconfirmed, not absent.
| Feature | Trainer | Strong |
|---|---|---|
| Price | Free core tracking; optional Trainer Pro subscription Source | check current pricing Unconfirmed Source |
| Platforms | iPhone, iPad and Apple Watch Source | iPhone, Android Source |
| Apple Watch | Already-synced routines, weight/reps and rest controls; initial setup and sync require iPhone Source | Workout logging Source |
| AI / progression | Editable history-based targets; AI plan generation, improvements and coaching Source | Routine/logging focus; adaptive AI not confirmed Unconfirmed Source |
| Programs | Equipment-aware programs, templates and editable routines Source | Create and reuse routines Source |
| Free tier | Logging, next-weight suggestions, saved/library programs and recorded workout history Source | Free account and core tracking; check current routine limits Source |
When Strong is still the better fit
Stay with Strong if an established coach or program supplies your training decisions and you like recording them yourself. In that setup, the app does not need to invent a plan. Strong’s published iPhone, Android, and Watch support is another concrete reason to keep it if your devices or training partner span platforms.
Its official site also lists export, custom exercises, timers, and training records. Verify the current Free and Pro boundary for the exact features you need. A move that loses carefully named exercise variations or makes a familiar routine harder to run is not automatically an upgrade just because the new product mentions AI.
The useful test: carry one bench-press record forward
Choose a familiar exercise and note the last actual sets, not just the planned prescription. If the last bench session ended with fewer reps than expected, the next session should not quietly pretend all targets were completed. Open the same movement in the replacement and inspect the proposed load or rep target before using it.
Keep the rest of your routine stable while comparing the workflow. Can you edit a suggested target? Can you tell working sets from a warm-up? Does your next completed session appear under the expected movement? These checks are more useful than comparing two screenshots of lifetime volume, because they test whether your history still helps you train.
Before you move your routine
- Export a Strong CSV and keep the original file outside the app you are moving to.
- Preview the file in Trainer, checking units, custom exercise matches, and recent completed sets.
- Recreate your current routine and compare the first saved workout with your old log before relying on imported targets.
Keep the original archive until you have checked the new record. Exporting data from one product does not establish that another can import its format. Do not delete a useful history simply because your first new session looks right.
Three other options worth understanding
Hevy
A workout log with routines, progress analysis, social sharing, and adaptive Hevy Trainer in Pro.
Access to check: 4 routines; 3 months of displayed history; 7 custom exercises Source
Liftin’
An iPhone and Watch set log with configurable automatic increases and decreases.
Access to check: Website advertises an extended free trial; check terms Source
StrengthLog
A free strength log and program ecosystem with paid advanced programs and reports.
Access to check: Unlimited logging, basic statistics, custom workouts, and basic programs Source
Compare the ongoing cost of the feature you need
A free download, a trial, and a permanent free core are different offers. For Strong, the checked access record is: Free account and core tracking; check current routine limits Source
The published price record is: check current pricing Unconfirmed Source Check your platform, region, renewal period, and the actual feature you intend to use at checkout. An unconfirmed price is not treated as zero.
For Trainer: Free core tracking; optional Trainer Pro subscription. Its free core includes logging, next-weight suggestions, saved/library programs and recorded workout history. Optional AI features have their own access rules. Compare permanent free access and trials
Sources, scope, and how this guide was written
Editorial review: . The shared feature inventory was recorded on 2026-10-14; StrengthLog and Apple Fitness+ were added on October 15. Official product pages were revisited for the original alternatives series. Source links in the comparison table identify the support for each field.
Trainer descriptions cover its workout planning, Strong and Hevy history import, published features, and current availability. Training scenarios are illustrative editorial examples. We did not independently test every competing app, measure comparative results, or invent customer stories. Read the full method and correction policy
Frequently asked questions
Can Trainer read a Strong CSV export?
Yes. Trainer includes a Strong CSV preview and import flow. Review the proposed exercise matches and units; a CSV import is not a promise that every setting or routine transfers.
Do I need AI to replace Strong?
No. A manual log is enough when you already have a program and progression rules. Trainer’s core tracking and history-based next suggestions do not require treating AI as the authority over your sets.
Should I move if Strong already works for me?
Only if the replacement solves a concrete missing job, such as planning your week or connecting completed sets to editable next targets. A working routine is a good reason to stay.
Continue with the kind of alternative you need
Keep the comparison tied to your next actual session. A useful replacement should make the training job clearer while preserving the records and guidance you still need.
