That one job is what earns a strength app its place, and DO IT does it with today's workout already planned for home or gym and no subscription. Two to three sessions a week, each muscle trained about twice, is enough for most people to get steadily stronger.
What progressive overload means in practice
Your body adapts to the work you give it, then stops adapting unless the work goes up. The American College of Sports Medicine lists the ways to raise it: more load, more reps, more sets, less rest, or harder exercise variations (ACSM, 2009).
In practice that's a simple loop:
- Do the session. Write down reps and weight (or let the app do it).
- Next time, beat one number on at least one exercise: one more rep, a little more weight, or a harder variation.
- When you hit the top of your rep range on every set, make the exercise harder and drop back to the bottom of the range.
Without a record, you're guessing. Most people repeat the same workout for months because they can't remember what they did last Tuesday. That's the main reason to use an app at all.
How often should you strength train?
| Question | Short answer | Source |
|---|---|---|
| Minimum for health | Muscle-strengthening work on at least 2 days a week | WHO (Bull et al., 2020) |
| Beginners | 2-3 full-body sessions a week, 1-3 sets of 8-12 reps | ACSM, 2009 |
| How often per muscle | About twice a week builds more muscle than once | Schoenfeld et al., 2016 |
| How much time pays off | 30-60 minutes a week was linked to about 10-20% lower risk of death from any cause | Momma et al., 2022 |
The last row is observational data, so it shows an association, not proof. But it's a useful reality check: the payoff starts at about an hour a week, not ten.
Light weights or heavy weights?
Both work, for different goals. A meta-analysis found similar muscle growth with light and heavy loads when sets were taken close to failure, but heavy loads built more maximal strength (Schoenfeld et al., 2017). If you train at home with your bodyweight or light dumbbells, you'll still build muscle; push sets hard and progress them. If you want the biggest possible squat or deadlift, you'll need heavier loading at some point. Our bodyweight workout app page covers how to progress without weights.
What DO IT tracks, free
- Best reps and last session tracked for every exercise, so you know the number to beat.
- Pre-built daily workouts: open the app and today's session is ready. No spreadsheet, no program hopping.
- Equipment profiles (gym, home, travel) that filter exercises to what you have.
- Difficulty feedback: rate a workout and future intensity adjusts.
- Rest timer set per exercise: longer for big compound lifts (3-4 minutes), shorter for accessories (60-90 seconds), auto-start.
- Post-workout summary with volume, PRs and muscle groups hit.
- HD demo video for every exercise, one-tap swaps for the same muscle group, streak tracking with rest-day protection.
No subscription, no trial, no premium tier. iPhone app plus the full app in any browser.
What DO IT doesn't do
Being straight about it: DO IT is built to tell you what to do today, not to be a blank logbook for a powerlifting program you wrote yourself. If you already follow a specific barbell program and only want a place to log sets, a dedicated logging app may suit you better. If you want the plan chosen for you and the numbers tracked, that's what DO IT is for.
Who makes DO IT
DO IT is built by Supliful, a supplement company, and founded by Martins Lasmanis. The app is free. The same team sells an optional product, DO IT Creatine Hydration, in a separate shop; you don't need it to use the app. If you're curious whether creatine fits a strength routine, our guide Should you take creatine on rest days? covers dosing, and the product facts page lists ingredients and price.
Related
- Bodyweight workout app: building muscle with no equipment.
- Workout app for beginners: a first month, week by week.
- Free Hyrox training plan for beginners: strength plus running, 8 weeks.
Frequently asked questions
What is progressive overload?
Gradually increasing the demand on your muscles: more weight, more reps, more sets, less rest or a harder variation. Without it, strength gains stall.
Is there a free strength training app with progressive overload tracking?
Yes. DO IT is free with no subscription. It tracks your best reps and last session for each exercise and plans the workout for you.
How many days a week should I strength train?
Two to three full-body sessions a week works for most beginners. The WHO minimum is 2 days a week, and training each muscle about twice a week builds more muscle than once.
Can I build strength at home without a gym?
Yes. Bodyweight and light-load training build muscle when sets go close to failure. Heavy loads are better for maximal strength, which matters more if you compete in lifting.
How long should I rest between sets?
Longer for big compound lifts, around 2-4 minutes, and 60-90 seconds for smaller accessory moves. DO IT sets the rest timer per exercise.
How long until I get stronger?
Most beginners can beat their previous numbers within the first few weeks, much of it from learning the movements. Muscle growth you can see takes longer, usually a couple of months of consistent training.
Sources
- American College of Sports Medicine. Progression models in resistance training for healthy adults. Med Sci Sports Exerc. 2009;41(3):687-708. https://doi.org/10.1249/MSS.0b013e3181915670
- Bull FC, et al. World Health Organization 2020 guidelines on physical activity and sedentary behaviour. Br J Sports Med. 2020;54(24):1451-1462. https://doi.org/10.1136/bjsports-2020-102955
- Schoenfeld BJ, Ogborn D, Krieger JW. Effects of resistance training frequency on measures of muscle hypertrophy: a systematic review and meta-analysis. Sports Med. 2016;46(11):1689-1697. https://doi.org/10.1007/s40279-016-0543-8
- Momma H, et al. Muscle-strengthening activities are associated with lower risk and mortality in major non-communicable diseases: a systematic review and meta-analysis of cohort studies. Br J Sports Med. 2022;56(13):755-763. https://doi.org/10.1136/bjsports-2021-105061
- Schoenfeld BJ, Grgic J, Ogborn D, Krieger JW. Strength and hypertrophy adaptations between low- vs. high-load resistance training: a systematic review and meta-analysis. J Strength Cond Res. 2017;31(12):3508-3523. https://doi.org/10.1519/JSC.0000000000002200
Disclosure: DO IT is a free workout app built by Supliful. We also sell a creatine and electrolyte powder. You don't need it to use the app or follow anything on this page.