Why track together at all?
Because it rubs off. In a 2018 randomized trial published in Obesity, researchers gave one spouse from each of 130 couples a weight loss program (Weight Watchers or a self-guided plan) and left the other spouse alone. About a third of the untreated spouses lost at least 3% of their body weight in six months anyway, and each couple's weight tended to move together. The researchers called it a ripple effect.
Tracking as a pair makes that ripple deliberate. You eat a lot of the same food, so you might as well count it once and keep each other going.
What to look for in a tracker for two
- Separate goals, shared meals. You almost certainly don't need the same number of calories. A 6'2" person who lifts and a 5'4" person who walks the dog can share a lasagna, but not the same portion of it. The app should count one meal against two different targets. (Get each person's number from the calorie calculator.)
- Log a shared meal once. If one of you cooks, the other shouldn't have to log the same dinner from scratch.
- See each other's day, if you both want to. A quick look at how your partner's day is going makes it easy to say "want to walk after dinner?" before it's too late to matter.
- One subscription, not two. Paying full price twice for the same app adds up fast.
- An easy exit. Either person should be able to stop sharing at any time without losing their own history.
How the main apps compare
| Wellew | Cal AI | MyFitnessPal | |
|---|---|---|---|
| One plan for two | Partner plan (2 people) or Family plan (4) | Family plan (reviewers report up to 6 members) | No, Premium is per person |
| Log one meal for both of you | Yes, choose both people when you take the photo | Not documented | No, each person logs their own diary |
| See each other's day | Yes, a live view of what your partner has logged today | Not documented | Friends can view your diary if you allow it in your diary settings |
| Price for two | Partner plan price shown in the app | Reported at about $59.99/year for the family plan | $79.99/year each, so $159.98 for two |
| Free plan | Yes, with no ads | 3-day trial | Yes, with ads |
How Wellew's Partner plan works
Sharing is a core part of Wellew, so here's exactly what it does.
- One of you subscribes to the Partner plan (you plus one person) or the Family plan (you plus up to three). Everyone on the plan gets full Pro, including the Coach and unlimited photo scans.
- Generate an invite code in the app. It's six characters and expires after 24 hours.
- Your partner enters it in their own Wellew app. You're linked.
- Snap dinner and tap both of you. The buttons above the shutter decide whose diary a meal goes into: you, your partner, or both. Each diary counts it against that person's own goals, and either of you can adjust your own entry afterwards if you had a smaller or bigger portion.
- Check in on each other. Your partner's card shows a live view of what they've logged today.
- Unlink any time. Either of you can stop sharing from the app. Your own logs stay yours.
Tracking together without fighting about it
- Support, don't audit. Seeing each other's day is for "nice job" and "want to cook together tonight?", not for commenting on the cookie. The fastest way to make someone quit tracking is to make their log feel watched.
- Log the pot, not the plate. For a home-cooked dinner, log the whole recipe once and split it by servings. We walk through it in counting calories when you cook for a family.
- Plate first, then photo. If you're logging by photo, take one of each plate after serving. A shot of the whole pan tells the app nothing about how much of it each of you ate.
- Different targets are normal. If one of you is losing faster, that's usually math, not willpower. Larger bodies burn more, so they often lose faster at the start.
- Share the wins that aren't the scale. A week of hitting protein, a streak of logged dinners, a walk you took together. Those are the habits that keep the weight off later.
Start free, link up when you're ready
Wellew is free on Android with no ads. Upgrade to the Partner plan when you want to share Pro and log for each other. The iPhone app is almost here.
Frequently asked questions
Can two people share one calorie tracking subscription?
With some apps. Wellew's Partner plan covers two people and its Family plan covers four, and everyone on the plan gets full Pro. Cal AI has a family plan. MyFitnessPal Premium is sold per person.
Can I log a meal for my partner?
In Wellew, yes. When you take a photo of a meal, you choose who it's for: you, your partner, or both. The meal lands in each person's diary and counts against their own goals.
Should couples eat the same number of calories?
Usually not. Calorie needs depend on height, weight, age, sex and activity, so two people eating the same dinner often need different portions. Each person should set their own target, for example with our free calorie calculator.
Does losing weight together actually help?
There's evidence it rubs off. In a 2018 randomized trial published in Obesity, about a third of spouses who weren't in any program lost at least 3% of their body weight over six months when their partner started one.
Sources
- Gorin AA, et al. "Randomized Controlled Trial Examining the Ripple Effect of a Nationally Available Weight Management Program on Untreated Spouses." Obesity, 2018. doi:10.1002/oby.22098
- myfitnesspal.com/premium: Premium $79.99/year, sold as individual plans
- calai.app/faq: family plan invitations; calai.app: 3-day free trial
- eesel.ai and Screens Design: reported Cal AI family plan price and size