Choosing a gym app can feel overwhelming. Which app actually helps you progress? We compare the most popular gym apps in 2026.
What makes a good gym app?
A good gym app makes training easier. Key features:
- Quick workout logging – under 10 seconds per set
- Progress tracking over weeks and months
- Programming and planning help
- Offline support
- Mobile-first design
Gym app comparison 2026
Most popular gym apps with strengths and weaknesses:
Hevy
Most popular free option. Great for logging. No AI coaching.
Strong
Minimalist and fast. Free limited to 3 routines. No AI.
Fitbod
AI-powered but only 3 free workouts, then expensive.
SisuLift
Finnish AI app with real coaching, free tier, and offline support.
Quick comparison – what you get with each app
| Feature | Hevy | Strong | Fitbod | SisuLift |
|---|---|---|---|---|
| AI programming | – | – | ✓ | ✓ |
| Finnish language | – | – | – | ✓ |
| Free version | ✓ | ✓ | 3 workouts | ✓ |
| Weekly analysis | Limited | Limited | – | ✓ |
| Offline workouts | ✓ | ✓ | – | ✓ |
| Premium price | $10/mo | $5/mo | $13/mo | €9.99/mo |
Free vs. paid apps
Free apps get you started but have limitations. Paid versions offer unlimited use and AI features.
Start free and upgrade when you need more.
AI vs. traditional – which is better?
Traditional apps are enough if you know your program. AI adds value when:
- You don't know how to program optimally
- Progress has stalled
- You want automatic periodization
- You don't want to spend time on planning
For casual fitness, traditional works. For continuous progress, AI pays for itself.
What does a good workout app cost?
Workout app pricing varies significantly:
- Free apps (Hevy, SisuLift free): $0 – basic logging and limited features
- Affordable premium (SisuLift, Strong): $5-10/mo – AI features, unlimited use
- Mid-range (Fitbod, Aitofit): $10-15/mo – broader AI coaching
- Premium (custom services): $20-50/mo – personal training-level service
Price doesn't always correlate with quality. SisuLift offers AI-powered programming for under $10/month.
Switching apps – how to migrate
Switching doesn't mean losing your data:
- Export your training data as CSV from the old app
- Import data into the new app – SisuLift supports CSV import
- First 1-2 weeks the AI learns your training rhythm and level
- Don't be afraid to try – you can always switch back
How to find the best gym app
- Try free versions first
- Decide: just logging or intelligent coaching?
- Check language support
- Test offline mode
- The best app is the one you actually use
→ Read also: AI workout app — complete guide | Compare apps