LockIn30 vs 30 Day Fitness - Home Workout

Quick answer

30 Day Fitness - Home Workout by Mosaic S.r.l., which its own description calls “30 Day Fitness Challenge”, has been on the App Store since 2016 and runs on iPhone and iPad. It is a guided bodyweight program: warm-ups followed by plank, squat and ab routines, with video instructions for all of them. The catch is printed on the listing itself, in the last line of the description: “You will be required to sign up for an auto-renewable In-App Purchase before you are able to access the app.”

LockIn30 is a single-habit challenge tracker. You pick one habit from a 36-task library across 12 categories, or write your own, and set any length from 7 to 365 days. Then you log it once a day, with a checkbox, counter, minutes, photo, text or measurement. It is free to download and works offline. There is no account.

These two are not really rivals. One hands you a ready-made fitness plan and tells you what to do today. The other keeps score on a habit you chose yourself and does not care what the habit is. If you want the exercises chosen for you, with video showing the form, get 30 Day Fitness - Home Workout. If the habit is reading, water, sleep, no phone after nine, or a workout routine you already have, get LockIn30.

Side-by-side

Where 30 Day Fitness - Home Workout wins

It gives you the workout, not a place to record it. The listing describes regular warm-ups followed by exercises that work the whole body, with plank, squat and ab work in the routine, drawn from what it calls “hundred of exercises carefully selected for you”. Every routine comes with video instructions, and the description adds HD video tutorials for its newer workouts and fitness plans. LockIn30 has no exercise content at all. If you do not know what to do for thirty days, this app decides for you.

It has been on the App Store since 2016. It is rated 4.3 stars from about 58,600 US ratings, though roughly 7,000 of those ratings are one star. Reviewers say the workouts are easy to follow and work for beginners, and that the intensity is adjustable. Reviewers also say they see results, mostly weight loss and toning, and that the app is what got them to keep going day to day. LockIn30 arrived in 2026 with 3 ratings, and three ratings prove nothing.

Apple Health works in both directions. The description says it exports exercise data from the app to the Health app and imports body measurements from Health back in. If your rings and your scale already feed Apple Health, this app joins the loop. LockIn30’s listing does not mention Apple Health.

It speaks 13 languages. The store page lists English plus 12 more, including Arabic, Japanese, Korean, Russian, Turkish and both Chinese scripts. LockIn30’s store page lists one language, English.

Where LockIn30 wins

The habit can be anything. LockIn30 starts from a 36-task library across 12 categories: fitness, nutrition, mind, sleep, learning, productivity, spiritual, relationships, hydration, self-care, progress, and your own. Anything the library lacks, you write yourself. 30 Day Fitness - Home Workout describes fitness plans picked from its own exercise library, and nothing about a habit you write yourself. If the thing you want to do daily is read twenty pages or be in bed by eleven, only one of these two apps has a place to put it.

The length is yours. Any duration from 7 to 365 days, 30 by default. The competitor’s listing describes 30 days and states no other length. How you log each day is yours too: a checkbox, a counter, minutes, a photo, text or a measurement.

It plans for the day you miss. LockIn30 has a tough mode with a Be Honest dialog when you break the chain, and a soft mode with no penalty. There is a once-per-device auto-fill rescue, and a restart that bumps an attempt counter instead of quietly resetting you to zero. Missed days group into date ranges as of the August 2026 update. The competitor’s listing says nothing about streaks, missed days or rest days. Every 30-day run has a missed day in it somewhere, and only one of these apps has an answer ready.

Your run turns into something you can look at. Progress photos land in a gallery labeled by day number, with side-by-side compare. The finish line produces a 1080x1920 timelapse at 4 FPS. The statistics screen shows completion rate, best streak, days done, a daily completion chart and numeric trend charts. LockIn30 is free to download and shows no ads. It works completely offline, and every challenge, photo and log stays on your device with no account. 30 Day Fitness - Home Workout asks you to sign up for an auto-renewable purchase before you can get in.

Pricing

• LockIn30 is free to download, with no ads and no account. Pro is $2.99 a week or $29.99 a year, after a 7-day trial. The listing does not spell out which features Pro unlocks.
• 30 Day Fitness - Home Workout by Mosaic S.r.l. shows as Free on the App Store, but its description ends with “You will be required to sign up for an auto-renewable In-App Purchase before you are able to access the app.” The store lists eight purchase entries under seven distinct names, from $0.99 to $4.99, including “Weekly Premium Plan” at $4.99. “Workout and Fitness Plans” appears twice, at $2.99 and at $0.99. No period is shown against any entry, and the only period the description states is weekly. The listing states no trial length; reviewers describe a one-week trial.

At the listed weekly price of $4.99, a year works out to roughly $259 by simple arithmetic, against $29.99 for a year of LockIn30 Pro. Two things in the reviews are worth knowing before you subscribe. Reviews from 2021 and 2022 are full of complaints about cancelling and about being charged after cancelling, and some reviewers mention the same in 2024 and 2025. And reviewers keep pointing out that you have to pay before you can use the app, in reviews running right up to August 2026. The listing’s own terms say you can turn off auto-renewal from your Account Settings after purchase, and that a cancelled subscription stays active to the end of the period without a refund.

Which one should you pick?

Pick 30 Day Fitness - Home Workout if you want the exercises chosen for you and the form shown on video for every routine, if your workouts should end up in Apple Health, and if paying weekly to get in does not put you off.

Pick LockIn30 if your habit is not a workout, or it is a workout routine you already have and only need to keep score on. Pick it if you want to set your own length, if you want streaks, progress photos and a finish-line timelapse, or if you want an app that already knows what to do the first day you miss.

If you want to try the idea before installing anything, our free 30-day habit challenge tracker runs a full day grid in your browser, and the push-up challenge plan calculator builds a day-by-day ramp with no signup.