Tool profile
Strong: cost, fit and limits
Strong is a workout-tracking app made by Strong Fitness PTE Ltd. for iPhone, Android and Apple Watch that logs lifts with supersets, custom exercises and advanced progress charts, with a free Strong Account and a named but unpriced Strong PRO tier.
What to know first
Strong is a plain strength logger. The home page says Strong Accounts are free forever and lists supersets, custom exercises and advanced charts, and it names Strong PRO without showing a price, billing period or trial length. No AI feature is named. Unlike several rivals here, its privacy policy is readable, and it says data is kept until the account is closed and stored on servers in the United States and other countries.
Strong at a glance
| Maker | Strong Fitness PTE Ltd., Not stated on the vendor pages |
|---|---|
| Free plan | Yes |
| Entry price | Free forever (Strong Accounts) |
| API access | No |
| Category | Best AI Fitness Tracking Apps in 2026, rank 10 of 12 |
| Website | strong.app |
Who Strong is best for
Lifters who want a clean logbook
Supersets, custom exercises and charts cover the core of strength logging without extra features to learn. The home page lists no feature beyond logging, so there is little to learn before the first workout.
Apple Watch users
The app runs on Apple Watch as well as iPhone and Android, so sets can be logged from the wrist.
People who want free-forever access
The home page describes Strong Accounts as free forever, so there is no stated expiry on the base tier. That claim sits on the home page, and the Strong PRO tier remains a separate unpriced item.
Buyers who read policies
The privacy policy is open and states retention and storage, which is more than several apps on this list publish.
Strong plans and pricing
| Plan | Price | What it includes |
|---|---|---|
| Strong Accounts | Free forever | Workout tracking app access on iPhone, Android and Apple Watch, with supersets, custom exercises and advanced charts as claimed on the home page. |
| Strong PRO | Not published on the pages opened | Named on the home page; contents, price, billing period and trial length are not shown. |
| Billing terms | Not published on the pages opened | No monthly or yearly price list was found, so any payment terms must be read inside the app store. |
Checked November 2026.
What Strong does
- Supersets
- The home page lists supersets, so you can group two exercises back to back and log them together. Supersets matter for gym sessions where you alternate two exercises, as the log keeps both movements together.
- Custom exercises
- Lifters can add movements that are not in the built-in list, which matters for machine variants and gym-specific equipment. Custom exercises are named on the home page, though the free account limits on them were not verified.
- Advanced charts
- The home page promises advanced charts for tracking progress, though it does not itemize which metrics they cover. The metrics behind them were not itemized, so check the free account's history views before you rely on them.
- Apple Watch app
- Strong runs on Apple Watch, so a set can be logged without taking out a phone between exercises. The wrist app saves reaching for a phone between sets, and it runs alongside the iPhone and Android apps for the same account.
How Strong handles your data
Strong's privacy policy, hosted on its help site, names Strong Fitness PTE Ltd. as the operator and does not state a country. It says user information is stored on servers in the United States and other countries, that personal information is retained indefinitely to provide the Services, and that personal data is deleted when the account is closed. It does not state whether workout data trains models, and no certifications were listed. No AI feature is named, so the policy does not address AI processing.
Where Strong falls short in practice
- PRO is a blank. Strong PRO is named but its price, contents and trial are not shown, so a buyer cannot weigh the upgrade from the pages opened. The upgrade question stays open until you see the price and feature list inside the app store listing.
- Free contents unverified. Beyond the home page claim, what a free account includes and where limits sit were not verified. The home page claims free forever, but any cap on routines, history or exports is not shown on pages read for this review.
- Indefinite retention. The policy says data is retained indefinitely to provide the Services, so deleting the account is the only way to remove history. That differs from apps with a limited retention window, and it means the closing of the account is the only deletion route in the policy.
Works with
Alternatives to Strong
Strong: common questions
Is Strong free?
The home page says Strong Accounts are free forever, with supersets, custom exercises and advanced charts. It also names Strong PRO but shows no price, billing period or trial length, so we cannot say what the paid tier costs or removes.
Does Strong have AI features?
No AI feature is named on the pages we opened. Strong presents itself as a tracker with supersets, custom exercises and advanced charts. If you want a plan generator, look at Freeletics or JEFIT, which name AI coaching or tracking features on their own pages.
Does Strong work on Apple Watch?
Yes. The home page says Strong runs on iPhone, Android and Apple Watch, so you can log sets from the wrist. It does not list watch models or whether the watch app works without the phone nearby, so test that during your first workout.
Where does Strong store my workout data?
The privacy policy says user information is stored on servers in the United States and other countries. It also says personal information is retained indefinitely to provide the Services and deleted when you close the account. No certifications were stated.
Who operates the Strong app?
The privacy policy and home page copyright name Strong Fitness PTE Ltd. The pages do not state a country, so this review gives none. The privacy URL on strong.app redirects to the vendor's help site, where the policy is hosted.