u/bkessinger

I built this solo and it went live on the App Store this week.

Every morning you get dealt five cards from a deck of real-life challenges. The cards have rarity tiers, so commons are quick wins and legendaries hurt. You complete them in the real world for XP.

The social layer is where it gets fun. Friends can play action cards into each other's days: Sabotage removes your friend's easiest card so they're stuck with the hard ones, and buff cards protect a hand. There's a consent system so nobody gets griefed who didn't opt in.

The biggest design argument I had with myself was whether the daily draw should be truly random or category-balanced. Truly random won, repeats allowed. It feels more like an actual deck.

I'm the only dev on this, so if you tear the design apart I'll actually read it.

CardHabit is less a habit tracker and more a daily challenge. You don't pick what to track, only how you show up. Each morning it deals you five habit cards, one each across Physical, Mental, Nutrition, Recovery, and a Wildcard. You commit to the ones you'll do that day, and the ones you finish earn collectible cards for your vault.

The idea is something hard every day, not a 75-day sprint you burn out on. It's built for people who read Atomic Habits but never made them stick.

The part I most want tested is the multiplayer. Friends can play Challenge cards into your next-day draw, raising the bar on tomorrow's hand, so it works best if you pull in a friend or two and push each other.

I'm a solo dev building toward a July 7 App Store launch. I'd love eyes on the daily draw and the invite flow.

Happy to answer anything in the comments!

I’ve been building a health habit app with a social mechanic I haven’t seen done before and wanted to get some feedback on whether the overall concept and business model makes sense.

The core loop: every morning you draw 5 health challenge cards across physical, mental, nutrition and recovery. You commit to 2 or 3. Friends can escalate your committed challenges before you complete them — harder reps, more water, longer holds. Complete a card and it’s safe. The social layer creates real stakes without letting anyone off the hook.

Underneath that there’s an archetype system, your patterns over time reveal a character class with passive perks that shape your future draws.

On the business side it’s free with a Pro and Elite subscription tier at $7.99 and $14.99 per month. The bet is that the social mechanic drives organic growth — every escalation is a notification that pulls someone back into the app, and inviting friends to sabotage you is essentially built-in referral.

Currently in late stage build on iOS, launching in the next couple months.

Curious whether the subscription model makes sense for this kind of app, and whether the social mechanic is strong enough to drive the organic growth the model depends on.

Been working on an iOS app called CardHabit and wanted to get some outside feedback on the core mechanic before I get too deep into launch prep.

Every morning you draw 5 health challenge cards, physical, mental, nutrition, recovery. You commit to 2 or 3 for the day. Friends can see what you committed to and make your challenges harder before you finish them. Complete a card and it’s locked, they can’t touch it.

There’s also an archetype system underneath, your completion patterns over time reveal a character class that shapes your future draws and gives you passive perks.

Main thing I’m curious about is whether the friend escalation mechanic sounds motivating or annoying to people who aren’t already bought into the concept. It’s designed to create pressure rather than punishment, you still do the thing, it just might be harder than you planned.

Happy to share screenshots in the comments if anyone wants to see where it’s at visually

Working on a habit app called CardHabit, wanted to share the concept here and get some honest feedback.

Every morning you draw 5 health challenge cards across four categories, physical, mental, nutrition, and recovery. You commit to 2 or 3 for the day. Friends can see your committed cards and escalate the difficulty before you finish them. A 30 minute walk becomes a run. 2L of water becomes 3L. Once you complete a card it's locked and untouchable.

Underneath that there's an archetype system, your completion patterns over time reveal a character class that shapes your future draws and gives you passive perks. Complete mostly physical cards and you'll eventually unlock Ironclad. Lean into recovery and mental cards and you go a different direction.

It's iOS and pretty far along in the build. Happy to share screenshots if anyone wants to see where it's at.

Main things I'm genuinely uncertain about: whether the escalation mechanic creates fun pressure or just frustrates people, and whether the archetype reveal is compelling enough to drive long term retention. Interested in any thoughts.

I'm building a health habit app and the core social mechanic is a bit different so wanted to get some thoughts from people who think about this stuff.

Every morning you draw 5 health cards across physical, mental, nutrition and recovery categories. You commit to 2 or 3 for the day. Friends can see what you committed to and escalate the difficulty before you finish, harder reps, more water, longer hold times. Complete a card and it's locked, they can't touch it.

The design assumption is that most habit apps fail because the feedback loop is too isolated. Streaks and badges work short term but there's no real social pressure. Making the social layer adversarial seemed like a way to create genuine stakes without it feeling punishing, you still have to do the thing, it might just be harder than you planned.

There's also an archetype system underneath it, your completion patterns over time reveal a character class that shapes your future draws and gives you passive perks.

Interested whether people here think adversarial social mechanics actually sustain engagement or whether they burn out faster than cooperative ones. Have seen more research on cooperative but less on this side of it.

I've been working on a habit app with a mechanic I haven't really seen before. Every morning you draw 5 health cards, workouts, nutrition, mental, recovery. You commit to 2 or 3 of them for the day.

Your friends can see what you committed to and escalate it before you finish. "30 minute walk" becomes a run. "Drink 2L of water" becomes 3L. Nobody gets to skip, you might end up working harder than you planned.

The app calls it sabotage but it's really more like a dare. Completed cards are untouchable so there's a race element to it, finish before your friends mess with your plan.

Most accountability apps just pat you on the back. Streaks, badges, gentle nudges. Real accountability from actual people doesn't really work like that. Your friend daring you to go harder hits different than a push notification.

Still building it out. Curious whether the pressure mechanic sounds motivating or just stressful to people.