Before installing any "free" iPhone fitness app, check the App Store page for "In-App Purchases": if it's there, part of the app is paid, and often that's the workout plan itself.
How to check if an iPhone fitness app is really free
The App Store gives you most of what you need before you tap Get:
- "In-App Purchases" next to the Get button. Apple shows it when an app sells anything inside. Scroll down the listing to the In-App Purchases section to see the prices; a list of weekly, monthly and yearly options means a subscription.
- The word "trial" in screenshots or the description. A free trial on iPhone usually turns into a paid subscription automatically unless you cancel before it ends.
- What's free vs locked. Some apps give away the exercise library and charge for the plan. The plan is the part that gets you training.
- App Privacy section. It lists the data the app collects. Worth a 10-second look for any app you'll open every day.
How to cancel a fitness subscription on iPhone
If you've already started a trial somewhere, you can cancel it in Settings > [your name] > Subscriptions, pick the app, and tap Cancel Subscription. You keep access until the end of the period you've paid for. Cancelling before a trial ends means you won't be charged.
What DO IT includes on iPhone, free
- Today's workout, already picked. Open the app, tap the session, follow along.
- HD demo video for every exercise.
- Progressive overload tracking from your best reps and last session.
- Equipment profiles: gym, home or travel, so you only get exercises you can do where you are.
- Difficulty feedback: rate a session and future intensity adjusts.
- Rest timer, one-tap exercise swaps, streak tracking with rest-day protection, guided cooldown stretches, post-workout summary.
- Phone-number sign-in, no password.
No subscription, no trial, no premium tier, and no in-app purchase unlocks a workout.
iPhone requirements and no-iPhone options
| Details | |
|---|---|
| iPhone app | Free on the App Store, requires iOS 15.1 or later |
| Size | About 33 MB |
| No iPhone (Android, laptop, tablet) | Open app.dothework.fit in any browser; it's the full app, not a demo |
| Sign-in | Phone number, no password |
Requirements and size are from the App Store listing on 2026-11-09 and can change with updates; the listing is the source of truth.
Is a free app enough to get results?
For most people, yes. What gets results is showing up, and that is where people struggle: in a study of 5,240 new fitness-center members, 63% stopped within three months (Sperandei et al., 2016). The WHO recommends muscle-strengthening work on at least 2 days a week plus 150-300 minutes of moderate activity (Bull et al., 2020). A paid app doesn't make either of those easier by itself. An app that decides the workout for you and shows you beat last week's numbers does.
Who makes DO IT
DO IT is built by Supliful, a supplement company, and founded by Martins Lasmanis; the App Store seller is listed under his name. The app is free. The same team sells an optional product, DO IT Creatine Hydration, in a separate shop on the website, not inside the app. You don't need it to use DO IT. Ingredients and price are on the product facts page.
Related
- Free workout app with no subscription: five checks for any "free" app.
- Workout app for beginners and bodyweight workout app.
- Free Hyrox split calculator: works in Safari, no signup.
Frequently asked questions
Is there a completely free fitness app for iPhone?
Yes. DO IT is free on the App Store with no subscription, no trial and no premium tier. Check any other app's listing for "In-App Purchases" before you download.
How do I know if an iPhone app will charge me after a free trial?
Look for "In-App Purchases" and the word "trial" on the App Store page. Trials usually renew into a paid subscription unless you cancel in Settings > [your name] > Subscriptions before they end.
What iOS version does DO IT need?
iOS 15.1 or later, per the App Store listing. On older devices you can use the full app in Safari at app.dothework.fit.
Is DO IT on Android?
There's no Android app. The full app runs in any browser at app.dothework.fit, including Chrome on Android.
Does DO IT need a gym?
No. Set your equipment profile to home for no-equipment workouts, or gym or travel when that changes.
Does DO IT have ads?
No. There are no ads in the app.
Sources
- DO IT App Store listing (seller, price, minimum iOS version, size), read 2026-11-09. https://apps.apple.com/us/app/do-it-do-the-work/id6759219860
- Apple Support. Cancel a subscription from Apple. https://support.apple.com/en-us/118428
- Sperandei S, Vieira MC, Reis AC. Adherence to physical activity in an unsupervised setting: explanatory variables for high attrition rates among fitness center members. J Sci Med Sport. 2016;19(11):916-920. https://doi.org/10.1016/j.jsams.2015.12.522
- 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
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.