Step counter app for couples and friends: how to choose

Why it works better as a pair

Couples often change their exercise habits together. A study by Jackson et al. (2015) followed 3,722 married and cohabiting couples in England, mostly aged 50 and over. It counted people as active if they did moderate or vigorous activity at least once a week. Among those who were inactive, 67% of men and 66% of women became active within two years if their partner also became active in the meantime. When the partner stayed inactive, it was only 26% of men and 24% of women.

It’s an observational study, and participants reported their own activity, so it shows a link, not cause and effect. The data can’t tell who started first or who pulled whom along. For everyday purposes, though, it’s enough: when one of you gets moving, the other often follows.

An app won’t create this effect, but it can help keep it going, especially on days when one of you isn’t in the mood.

Five questions before you download

1. Does it run on both your phones?

Apple’s built-in sharing only works between iPhones, and sharing in Fitness also assumes an Apple Watch. If one of you has an Android phone, you need an app that runs on both systems and reads data from Apple Health and Health Connect. A detailed overview of the options is in How to share steps between iPhone and Android.

2. What exactly will the other person see?

This is where apps differ most. Some show exact steps on a leaderboard, others add the name, photo and email address from your account. In Google Health (formerly Fitbit), for example, friends see your name, photo, email and, depending on your settings, your weekly step total.

Ask yourself and the other person whether numbers will help you or mostly give you something to needle each other about. For one person, 4,000 steps on a Tuesday is just information; for another, it’s a guilt trip.

3. Teamwork or competition?

Competition means a leaderboard and a winner of the day or the week. Teamwork means a shared goal you only reach together, like a shared streak of days. What the research says is covered below. In practice: competition suits pairs with similar fitness who enjoy egging each other on; teamwork suits people who want to support each other, not beat each other.

4. Account and privacy

Most apps with friends want an account. StepUp offers sign-in with Apple, Google, Facebook or email; Google Health needs a Google Account. Nothing wrong with that, but read what gets sent to the server and how data gets deleted. If you can’t stand accounts, take a look at step counter apps without an account.

5. What it costs

The basic features with friends are usually free. The difference is how the app makes its money. StepUp has ads and you pay to turn them off; Pacer has a subscription on top of its free basics and contains ads. Apple’s Fitness app is free, but it needs an iPhone, and according to Apple’s help, the friends you share with should have an Apple Watch.

Competition or teamwork: what the research says

The best comparison comes from the STEP UP randomized trial (Patel et al., 2019). It included 602 adults with overweight or obesity, employees of a single US consulting firm, with an average age of 39. All of them tracked their steps with a wearable device and chose a goal above their baseline average. They were then randomly split into four groups, three of which played a 24-week game with points and levels:

• Support: each participant picked a family member or friend who received a weekly summary.
• Collaboration: three people per team; each day, one member was drawn at random, and their result decided the points for the whole team.
• Competition: three people and a weekly leaderboard.
• Control: step tracking only, no game.

During the game, all three game groups improved more than the control group. Compared with control, competition added 920 steps a day, support 689 and collaboration 637. Once the game ended, activity dropped everywhere, and over the following 12 weeks only the competition group stayed significantly above control.

Before you conclude that “competition always wins,” note one important detail. Teammates and opponents mostly didn’t know each other beforehand; the organizers introduced them by email. The authors themselves write that the effect of different social incentives may depend on how close people are, and that collaboration did worst precisely among strangers.

For a pair, the practical takeaway:

1. Similar fitness, and you enjoy egging each other on? Go ahead and use a leaderboard.
2. One of you walks twice as much as the other? The leaderboard will have a winner before it even starts. A shared goal you can both reach works better.
3. Not sure? Try one approach for two weeks, then the other. Basic versions are usually free, so the experiment costs nothing.

The “support” group deserves a mention too. They didn’t beat anyone or form a team; they just had someone close who received a weekly summary and was supposed to cheer them on. Even so, they did better than control. The effect can’t be separated from the points game itself here, but it shows you don’t have to compete.

Where Tada! fits

Tada! is built on teamwork, not competition. You and your buddy have one shared streak, and it only grows on days when you both make it. A day counts from 6,000 steps or 20 minutes of workout — one of the two is enough.

Your buddy only sees your nickname, your color and whether you’re done for today. No steps, minutes, times or places. You don’t need an account or an email address; each phone reads its own data from Apple Health or Health Connect.

To be fair: if you want to see how many steps the other person has and compare, StepUp or Pacer will suit you better. Tada! is for pairs who are happy just knowing the other one moved today. How a shared streak works is explained in the help center.

One streak for the two of you Invite your partner, a friend or your mom and keep it going together. The streak only grows when you both make the day — and the numbers stay on your phones. Download for iPhone

A few tips to make it last as a pair

• Agree on the rules up front. What counts, what happens if someone gets sick, what if someone travels.
• Set the bar for a bad day. A goal you can only hit when you’re in top form won’t survive the first flu.
• Nudge, don’t nag. A quick “Want to go for a walk?” works better than a screenshot of the leaderboard.
• Long distance works too. Living in different places? You’ll find tips in How to keep each other moving from a distance.

Want to bring in more people, like the whole family or a crew from work? Then read how to set up a step challenge that lasts.

Frequently asked questions

Which step app works for a couple with an iPhone and an Android phone?

For example, StepUp, Pacer or Google Health if you want step leaderboards, or an app with a shared streak if you’d rather not share numbers. Apple’s built-in sharing only works between iPhones.

Is it better to compete or to work together?

In the STEP UP trial, competition had the best results, although the differences between the game groups weren’t statistically significant. And these were people who didn’t know each other beforehand. For people who are close but have different fitness levels, a shared goal may make more sense. Go with whatever the two of you enjoy.

Does the other person have to see my steps?

Not if you don’t want them to. It depends on the app: leaderboard apps show steps, while apps with a shared streak only show whether you’re done for today.

Sources

1. Jackson SE, Steptoe A, Wardle J (2015). The influence of partner’s behavior on health behavior change: the English Longitudinal Study of Ageing. JAMA Internal Medicine. link
2. Patel MS, Small DS, Harrison JD, et al. (2019). Effectiveness of Behaviorally Designed Gamification Interventions With Social Incentives for Increasing Physical Activity Among Overweight and Obese Adults Across the United States: The STEP UP Randomized Clinical Trial. JAMA Internal Medicine. link
3. Google (2026). Connect with friends on Google Health. Google Health Help. link
4. Google (2026). Google Health app setup requirements. Google Help. link
5. StepUp (2026). StepUp: Free Step Challenge App — FAQ. thestepupapp.com. link
6. StepUp (2026). Privacy Policy. thestepupapp.com. link
7. Pacer Health (2026). Pacer Step Challenges for Friends, Family & Teams. mypacer.com. link
8. Pacer Pedometer Step Counter (2026). App Store. link
9. Pacer Pedometer & Step Counter (2026). Google Play. link
10. Apple (2026). Share your activity in Fitness on iPhone. iPhone User Guide. link
11. Apple (2026). If you can’t share your Activity rings. Apple Support. link
12. Garmin (2026). Garmin Connect. connect.garmin.com. link
13. Tada! (2026). How a shared streak works. Tada! Help. link
14. Tada! (2026). What the server knows about me. Tada! Help. link