Strong's lifetime plan costs $99.99. IronStack Pro is a one-time $14.99 Lifetime purchase — and adds AI workout generation and post-workout AI coaching that Strong doesn't have.
How IronStack compares to the Strong app across every feature that matters.
| Feature | IronStack | Strong |
|---|---|---|
| Price model | ✓ Free · $14.99 one-time · lifetime access | Free · $4.99/mo · $29.99/yr · $99.99 lifetime |
| AI workout generation | ✓ | ✗ |
| AI coach insights (post-workout) | ✓ | ✗ |
| Notes within workouts | ✓ | ✓ |
| Distinct rest timers (set vs exercise) | ✓ Two separate timers | Single timer only |
| Apple Watch app | ✓ | ✓ |
| Offline logging | ✓ | ✓ |
| Plate calculator | Text (free) · Visual (Pro) | ✓ PRO only |
| Custom exercises | ✓ Unlimited | ✓ Unlimited |
| Warmup sets | ✓ | ✓ |
| Saved templates (free tier) | Up to 3 custom templates | Up to 3 custom templates |
| PR tracking | ✓ | ✓ |
| Workout history | ✓ | ✓ |
| Folder organization | ✓ | Limited |
| Advanced analytics | ✓ Pro ($14.99 one-time lifetime purchase) | Pro (from $4.99/mo or $99.99 lifetime) |
| Available in Spanish | ✓ English + Spanish | ✗ English only |
| Signup required | ✓ No signup needed | ✗ Account required |
| Ads | ✓ None | ✓ None |
IronStack adds meaningful tools on top of everything Strong already does well.
Describe your goals and let the AI build a session for you. Great for when you don't know what to train or want a new stimulus. Strong has no AI features.
After finishing a workout, your AI coach analyzes your session and gives you personalized feedback and suggestions. Strong doesn't offer this.
Set a different rest time between sets and between exercises. Strong offers one timer. IronStack lets you differentiate — shorter rest between sets, longer rest when switching movements.
Organize your workout templates into folders — program blocks, training phases, body parts. Keep everything structured without scrolling through a long flat list.
IronStack is fully localized in both English and Spanish. Strong is English-only.
Strong charges $99.99 for lifetime access. IronStack Pro is a one-time $14.99 Lifetime purchase — the same permanent ownership, at a fraction of the price.
If you already use Strong and love the core experience — IronStack will feel immediately familiar. You get workout notes, rest timers, Apple Watch logging, a plate calculator, warmup sets, PR tracking, advanced analytics, and fast set logging with quick +/- taps for weight, reps, and seconds. On top of that, you get AI workout generation and post-workout AI coaching insights that Strong simply doesn't have. Pro is a one-time $14.99 Lifetime purchase versus Strong's $99.99 lifetime plan, with no IronStack subscriptions or recurring charges.
Yes. IronStack includes all of Strong's core features — workout notes, rest timer, Apple Watch, plate calculator, warmup sets, PR tracking, workout history, advanced analytics, and quick +/- taps for fast set logging — plus AI workout generation and AI coach insights, which Strong doesn't offer. Pro is also a one-time $14.99 Lifetime purchase, compared with Strong's $99.99 lifetime plan.
IronStack is free with no ads. Pro is a one-time $14.99 Lifetime purchase with no subscriptions or recurring charges. Strong's lifetime plan costs $99.99.
Yes. IronStack fully supports in-workout notes so you can capture feel, form cues, or anything else during your session — exactly like Strong.
The two biggest additions are AI workout generation and post-workout AI coaching. IronStack also offers quick +/- taps for faster set logging (weight, reps, and seconds), two distinct rest timers (between sets vs between exercises), folder organization for templates, no required signup, and full Spanish localization. Pro is a one-time $14.99 Lifetime purchase versus Strong's $99.99 lifetime plan.
Yes. IronStack includes a native Apple Watch app for logging sets and reps from your wrist — just like Strong.
No. IronStack doesn't require an account or signup. Download it and start logging immediately.
Strong allows exporting your data as CSV. You can use that as a reference to rebuild your workout templates in IronStack. Your exercise history can be recreated, and going forward you'll have all the new features available.
Download IronStack free — no account, no ads. Upgrade to Pro for a one-time $14.99 lifetime purchase (vs Strong's $99.99).