GymAdapt: your next weight, worked out from your last sets
Hit every rep and the app adds the smallest sensible jump for that equipment. Just make it and it holds. Miss and it holds once, then eases off. Log reps in reserve if you like and it uses that too. Every 6 weeks it schedules a lighter week so you come back stronger.
Progressive overload means doing a little more over time: more weight, more reps or more sets. It is the reason training works, and it is where most people stall, because deciding the next weight every session is tedious and easy to get wrong. An app that does it for you removes the guesswork.
How apps decide your next weight
- Rep-target rules (double progression). Work in a rep range, such as 8 to 10. When every set reaches the top, the weight goes up and reps reset. Simple and reliable. GymAdapt uses this, sized to the equipment.
- Effort ratings (RPE / RIR). You rate how hard each set was, and the app adjusts load from that. JuggernautAI and RP Hypertrophy lean on this.
- Performance models. The app estimates your strength from your history and predicts each set. Fitbod and Dr. Muscle work this way.
All three work. Research suggests adding reps and adding load both build muscle when sets are taken close to failure, so consistency matters more than the exact method.
Apps that progress your weights automatically
| App | How it progresses | Free | Price (US) |
|---|---|---|---|
| GymAdapt | Rep targets, equipment-aware steps, optional RIR, planned deloads | First 30 days | $4.99/mo · $24.99/yr · $79.99 lifetime |
| Fitbod | Strength model from your history | Trial | $15.99/mo · $95.99/yr |
| Gravl | AI from your logged sets | 3 workouts | $14.99/mo |
| Dr. Muscle | Every set auto-set, undulating periodization | Trial | $49.99/mo · $399.99/yr |
| JuggernautAI | Set ratings + readiness (powerlifting) | Trial | $34.99/mo · $349.99/yr |
| Alpha Progression | Set-by-set recommendations | Logging only | $12.99/mo · $79.99/yr |
| RP Hypertrophy | Feedback-driven sets and load | No | Subscription, check App Store |
| Hevy / Strong | Shows last numbers; you decide | Yes | Optional Pro |
US App Store prices, October 2026. Your App Store shows your local price.
The manual rule, if your app doesn't do it
- Pick a rep range per exercise: 6 to 8 for big lifts, 8 to 12 for most others, 12 to 15 for small muscles.
- Start with a weight you could lift for 2 or 3 more reps than the top of the range.
- Each session, try to add a rep to your sets.
- When every set hits the top of the range, add the smallest jump next time: 2.5 kg / 5 lb on barbells, the next dumbbell up, one pin on machines.
- If you miss the bottom of the range two sessions in a row, drop the weight about 5 to 10% and build back up.
When progress stalls
Stalls are normal. Before changing the plan, check sleep, food and how many sessions you actually made. A lighter week every 4 to 6 weeks helps; GymAdapt builds one into each 6-week block automatically. If a lift still won't move, swap it for a close variation for a block.
GymAdapt is free to start. Want Pro free for a month?
The free version gives you an AI-built plan and unlimited workouts. Code TRYFREE01 adds a full month of Pro: weights that adjust from what you log and unlimited coach chats.
Redeem the free month → Opens the App Store with the code filled in. iPhone only. After the month it's $4.99/mo unless you cancel in Settings, and the free version stays yours either way.Questions people ask
Is there an app that automatically increases weight?
Yes. GymAdapt, Fitbod, Gravl, Dr. Muscle, JuggernautAI and Alpha Progression Pro all suggest your next weight from your logged sets. GymAdapt does it free for your first 30 days (our app, iPhone only).
What is the best progressive overload app?
For most lifters, GymAdapt gives automatic progression at the lowest price ($24.99 a year, with a free start). JuggernautAI is best for powerlifting, and Dr. Muscle is the most hands-off if price is no concern.
How much should I increase weight each week?
Use the smallest jump your equipment allows (usually 2.5 kg / 5 lb on barbells, the next dumbbell up) once you hit the top of your rep range on every set. Beginners may add weight most sessions; experienced lifters may go weeks between jumps.
Can I do progressive overload with Hevy or Strong?
Yes. They show what you lifted last time, so you can apply the double-progression rule yourself. They just won't make the decision for you.
Is adding reps as good as adding weight?
For muscle growth, research suggests both work similarly when sets are hard. Most good plans combine them: add reps within a range, then add weight.
A coach, not just a counter, free to start
GymAdapt builds your plan and raises your weights from what you log. Free to start; code TRYFREE01 adds a month of Pro.
Get GymAdapt on the App Store → Free to start. Pro is $4.99 a month or $24.99 a year (7-day free trial), or $79.99 once for lifetime. iPhone only. In English, Spanish, Portuguese, French, German and Japanese.Sources
- Plotkin et al. 2022, PeerJ: load vs repetition progression
- Schoenfeld et al. 2017: weekly sets and muscle growth (meta-analysis)
- SensAI: Juggernaut AI vs RP Hypertrophy vs Alpha Progression (Oct 2026)
- Dr. Muscle on the App Store
- RP Hypertrophy on the App Store
- SensAI: Fitbod review 2026 ($15.99/mo, $95.99/yr)
