The best fitness challenge apps for friends and groups in 2026

The best fitness challenge apps for groups in 2026 depend on what your group does. GymRats suits gym crews who like posting workouts with photos. StepUp suits big step-only groups. Stridekick suits mixed wearables. FitNow’s Challenges suits Apple Watch ring-closers. Jolt Club, our app, suits private friend, family and office challenges that sync automatically. Here’s how they compare, based on each app’s own listings.

How did we compare these apps?

We compared five fitness challenge apps and one built-in option on what counts, how activity gets in, who can join, and how each app is funded. Every competitor fact comes from the app’s own App Store listing, website or pricing page, checked on November 14, 2026. We didn’t invent ratings or download numbers.

Disclosure: we make Jolt Club, so we are not neutral. To keep this useful, we kept our own entry to verified facts and included where it falls short. While designing Jolt Club we also read 511 two- and three-star App Store reviews of 10 step and challenge apps; inaccurate or late syncing was the most common complaint by far, which is why we weigh sync heavily below.

How do fitness challenge apps compare?

The short version: GymRats and Jolt Club count any kind of workout, StepUp and Stridekick centre on steps, and Challenges centres on Apple’s activity rings. GymRats and StepUp show ads on their free versions; Jolt Club has no ads. GymRats, StepUp, Stridekick and Jolt Club all work across iPhone and Android.

What is GymRats best for?

GymRats is a group fitness challenge app from Avocado Apps for iPhone and Android where any activity counts. Members post workouts to the group, and its App Store listing says all a workout needs is “a photo and a title”. It is one of the best-known apps for gym crews and friend groups who enjoy seeing each other’s workouts.

Its pricing page lists unlimited participants, team challenges, custom scoring, group chat and integrations with Apple Health, Health Connect, Fitbit and Garmin on the free plan, with ads and a limit of two active groups. Pro removes ads and adds unlimited groups, community groups, videos and data export. Scoring options on the App Store listing include workouts, miles, minutes, calories, steps and custom points.

Best for: groups who like the social side of posting each workout. Consider: the check-in habit is part of the fun, but someone who forgets to post may fall behind.

Is StepUp good for large step challenges?

StepUp is a social step counter for iPhone, Apple Watch and Android that focuses on steps alone. It syncs with Apple Health and Health Connect, supports many wearables, and lets you create private groups for a few friends or up to 15,000 people, which makes it a strong choice for very large step challenges.

According to its website, it has daily, weekly and monthly leaderboards and a “Mystery Mode” that hides today’s steps and shows only ranks until the next day. The site says it is supported by “minimal ads and optional in-app purchases to go ad-free”, and its App Store listing says no features are locked behind paywalls.

Best for: large groups and anyone who only cares about steps. Consider: runs, rides and gym sessions only count if they produce steps.

Who should use Stridekick?

Stridekick is an activity challenge app for iPhone, Apple Watch and Android built around connecting whatever tracker each friend owns. Its listing names Fitbit, Garmin, Withings, Apple Health and others, and people without a tracker can use their phone or enter activity manually. Challenges track steps or active minutes.

You can create Leaderboard, Streak or Target challenges, and there are community challenges with teams and shared goals. Its App Store listing says free challenges last up to 7 days, include up to 10 people and are public; a Pro subscription adds private challenges, longer challenges up to 45 days and more participants.

Best for: small groups with a mix of Fitbit, Garmin and other trackers. Consider: private challenges need Pro.

What is Challenges by FitNow?

Challenges, from FitNow (the company behind Lose It!), is an iPhone and Apple Watch app for team competitions built on Apple’s activity rings. It reads data from the Health app, and members earn points toward bronze, silver and gold medals while competing with friends, family and coworkers.

Its App Store listing describes team challenges, nudges and a challenge wall for comments. We only checked the iOS listing, so check Google Play separately if your group includes Android users.

Best for: Apple Watch owners who already chase their rings. Consider: it is built around the ring system rather than steps or workouts.

Do you need an app if you have an Apple Watch?

If you and one friend both wear an Apple Watch, you don’t need another app. Apple’s Activity app lets you challenge a friend to a 7-day competition where points come from how much of your rings you close each day, up to 600 points a day (Apple Support).

Best for: two Apple Watch owners. Consider: it’s one-on-one and Apple Watch only, so it doesn’t work for groups or Android users.

What does Jolt Club do differently?

Jolt Club is our free challenge app for iPhone and Android, made by VirtualBeans LLC. You start a private challenge, invite friends with one link or a 6-letter code, and everyone’s steps and workouts sync automatically from Apple Health or Health Connect to one live leaderboard. A nightly sweep finalises each day, so a day counts even if someone never opens the app.

Challenges can score steps, active minutes, distance, workouts, gym sessions, gym days with a weekly goal, active calories or custom points, for 7, 14 or 30 days or a custom length. Groups can play solo or as two named teams scored by average per member. There’s chat with reactions, cheers and optional photos on activities, streaks with a weekly freeze, badges and share cards. Ties are shown as ties, and manual entries are marked. No ads and no money pots.

Anything that writes to Apple Health or Health Connect counts, including Apple Watch, and Garmin when Garmin Connect is set to share with Apple Health or Health Connect, and Fitbit on Android through Health Connect.

Which fitness challenge app should you choose?

Choose by your group, not by feature count. For a gym crew that enjoys posting workouts, GymRats. For a huge step-only group, StepUp. For friends on a mix of Fitbit and Garmin who want a short public challenge, Stridekick. For two Apple Watch owners, Apple’s built-in competition. For private friend, family or office challenges without check-ins, Jolt Club.

• Does everyone already use the same platform? If not, rule out platform-only options.
• Will people remember to log? If not, choose automatic sync over check-ins.
• Is it only steps? Mixed groups of runners, lifters and walkers need workouts, minutes or points scoring.
• How private should it be? Check whether private groups are free or paid.
• Do ads matter to you? Some free tiers rely on them.

Once you’ve picked an app, our guides on starting a walking challenge with friends, running a workplace step challenge, and the 30-day walking challenge plan help you set it up. For format inspiration, see our step challenge ideas.

Jolt Club team, VirtualBeans LLC makes Jolt Club, a free app for step, walking and workout challenges with friends. We build and test the app ourselves and write these guides from what we learn running challenges. Jolt Club is our product, so we have a stake in it. Spotted an error? Email [email protected].