Hevy is a free workout tracker for iOS and Android built around reusable routines, structured set logging and a social feed of friends' workouts. Isofit is a workout tracker that takes workouts by tap, typed line or voice, shows the muscles your sets reached on a body graph, and includes Atlas, an AI coach that can read your log. Hevy is released and established. Isofit is released too, and newer. Available on the App Store and on the web. The short version: pick Hevy if you train with friends who already use Hevy and want a shared feed and leaderboards; pick Isofit if you want plain-language logging and a coach built into the app.
Side by side
| Isofit | Hevy | |
|---|---|---|
| Platforms | iPhone (iOS 17.6 or later) on the App Store, and a web app. Both are available now. No native iPad, Apple Watch or Android apps. | iOS, Android, Apple Watch, Wear OS and a web app. |
| How you log | Three ways into one structured log: tap in sets, reps, weight, distance, duration and RPE; type a Quicklog line such as "bench 5x5 225lbs"; or speak the workout and review the parsed draft before saving. | Structured sets, reps and weight with warm-up, drop and failure sets, supersets, RPE and rest timers. Routines work as reusable templates. Free-text or voice logging is not advertised. |
| Exercise library | Nearly 500 exercises covering strength training, cardio, yoga, sports and martial arts, plus add unlimited custom exercises with your own muscle mapping. | 400+ exercises, each with a demonstration animation, plus custom exercises. |
| Muscle view | A front and back body graph shaded by working sets per muscle over 7, 30 or 90 days or all time, with sets by muscle and most and least worked. It is explicitly not a recovery score. Pro feature. | A last-7-days body heat map and a muscle distribution chart, with set counts per muscle group on Pro. |
| AI and coaching | Atlas, an AI coach you talk to in chat. With your permission it reads your training history, and on Pro it writes programs and routines into your log. General fitness guidance, not medical advice. | Hevy Trainer (Pro) generates a program and suggests progressive overload; Hevy says these programs come from an algorithm and do not rely on AI. Separately, a Hevy app inside ChatGPT (tag @hevy in a ChatGPT conversation) reads your Hevy workout history, analyzes it, answers training questions and saves generated plans to your account. It is free to all Hevy users, and the chat happens in ChatGPT, not in the Hevy app. A finished workout can also be sent to ChatGPT or Claude from the app. |
| Community | Bonfire, a members-only feed. A post needs a caption and an exercise category, is limited to one a day, and visible to all members. No follows, groups or direct messages. | A social feed with follows, likes and comments, plus per-exercise leaderboards. Profiles can be switched to private. |
| Apple Health | Optionally reads workouts and daily summaries from Apple Health on every tier. Does not write to Apple Health. | Connects to Apple Health and Health Connect with read and write permission. |
| Activities covered | Logs strength training, cardio, yoga, sports and martial arts. | Strength first, with cardio and duration exercise types. |
| Price | Free tier with logging, history and Apple Health import. Pro is $14.99 monthly or $124.99 yearly (USD). | Free tier with 4 routines, 7 custom exercises and 3 months of history. Pro is listed at $2.99 monthly, $23.99 yearly or $74.99 lifetime (USD). |
| Data export | On-demand JSON export of your training, Atlas, account, health and social records. | Workout data export from settings, and CSV import from Strong. |
Where it fits
Where Isofit fits
Method
Facts about Hevy come only from each company's own website, help center and store listings, read on October 17, 2026. Where a company does not state something, this page says "Not stated" and does not guess. Apps change and prices vary by region, so check each company's site for current details.
Isofit's column was reviewed on October 17, 2026. Isofit is available on the App Store and on the web, so you can try the two side by side.
Sources
Everything this page says about Hevy comes from Hevy Studios S.L.'s own website, help center and store listings, read on . Apps change, and prices vary by region, so check Hevy's site for current details. If something here is out of date, email support@isofit.app and we will correct it.
Questions
It depends on what you want from a log. Isofit fits if you want to log in plain language, see sets per muscle on a body graph, and ask an AI coach about your own history, all on iPhone. Hevy fits better if you train with friends who already use Hevy and want a shared feed and leaderboards.
Yes. Both are available today. Available on the App Store and on the web.
Facts on this page were last reviewed . Details can change as Isofit updates. Read this page as markdown.
Available on the App Store and on the web.
Your workouts, working for you.
Download Isofit from the App Store for iPhone, or use the web app in your browser.
