duomaxx.ing
The accountability app for partners, siblings and best friends
Build better habits. Build a better relationship.
duomaxxing is an accountability app for two. You and one accountability partner agree a single shared list of daily habits, send photo proof of what you actually did, and decide whether the other's counted. It is a habit tracker where you are not the one marking your own homework — and the streak you end up with belongs to both of you.
- Free, no ads
- Nothing sold or shared
- iOS, Android & web
- Two minutes to set up
WorkoutTheir photo, 07:42 — waiting on you Pending
WaterYour 5 of 5 glasses — they approved +20
MealsTheir dinner rejected — "that's a snack" Again
The problem
Why do normal habit trackers fail?
Because in a normal habit tracker the only thing standing between you and a tick box is you, and you are extremely reasonable about it. An accountability partner is the part every solo habit app is missing.
You tick the box. Nobody saw. Nothing happened. A tick is a promise; the app believes you because it has no other option.
Five good days, one bad one, and the streak you were protecting is the exact thing that makes quitting feel clean.
One partner. One shared arena. They hold the whistle, you hold theirs, and neither of you gets to be reasonable alone.
Proof
A tick is a promise. A photo is a fact.
Every goal closes with photo proof and a note, and your partner verifies it — approve or reject, with no AI guessing whether the picture matches. Meals want three separate plates, water wants five glasses, a workout wants evidence you were there. Proof carries where it was taken, so the two of you slowly fill in a map of the year.
"They decide whether it counted. They can reject it. That is the point."
WorkoutFrom your partner · 2 min ago
Pillars
Pick the day you want to have.
Meals. Workout. Water. Reading. Cold plunge. Sleep. Twelve daily goals to choose from, or write your own — and you both run the same list, agreed between you before either of you starts. Same rules, same day, one board.
Neither of you can change the list alone. You propose, they approve or reject it with a note, and it only moves when you both agree.
The multiplier
Three days ×1.1. Thirty days ×2.0.
Every partner-verified goal is a flat 20 points, whether it was a cold plunge or three meals. Because you are both working the same list, the streak and the scoreboard actually compare. The only thing that compounds is showing up.
| Streak | Multiplier | Perfect day, 5 pillars |
|---|---|---|
| 0–2 days | ×1.0 | 100 |
| 3 days | ×1.1 | 110 |
| 7 days | ×1.25 | 125 |
| 14 days | ×1.5 | 150 |
| 30 days | ×2.0 | 200 |
The collection
Every perfect day hatches a mascot.
Close all of your pillars and the day grants you one. You pick who comes out — and whoever you pick repaints the entire app in their colours, down to the icon on your home screen.
Mascots
Each with a name, a colour palette and one line of opinion.
Packs
Classic, Nocturne, Underworld, Abyss, Eldritch, Beasts, Cursed, Punk, Sports, Gaming, Fiction, Fitness.
To earn
Thirty are unlocked from the start. The rest arrive one perfect day at a time.
Six of the seventy-eight — tap one to repaint this page the way it repaints the app.
Classic 12Nocturne 6Underworld 6 Abyss 6Eldritch 6Beasts 6 Cursed 6Punk 6Sports 6 Gaming 6Fiction 6Fitness 6
Milestones
Sixteen things worth doing once.
Earned, not awarded, and half of them are about verifying your partner rather than about you. Six of the sixteen:
Around the arena
What a year of verified days leaves behind.
Photo proof and memories drop onto a shared feed — where you were, together and apart. A year of verified days is the thing no other habit tracker leaves you with.
The feed
Every approved submission lands in a shared timeline, with stories that run for a day and take reactions before they go.
The map
Proof carries its location. Watch the two of you fill in a map — colour-coded by pillar, yours against theirs.
The month
A heatmap that darkens as pillars close, next to a shared calendar and a to-do list either of you can assign.
Home screen widgets
Both scores, both streaks, on the lock screen and home screen. Built for iOS and Android.
Nudges that mean something
An evening reminder for what's still open, a final call before midnight, and a push the moment your partner is waiting on you.
Light, dark, or theirs
Light and dark both properly drawn — then a mascot theme on top that tints every surface, badge and tab.
Get it
Your partner is waiting.
One account each, one pair code between you. Start free in any browser — it works the same on every platform because it's the same backend.
Any browser
The full app in any browser — add it to your home screen and push notifications work the same. Nothing to install, and it is the fastest way to get a partner started.
Open the web app →iPhone
Native SwiftUI, with lock screen and home screen widgets and an app icon that changes with your mascot.
In TestFlight — App Store soonAndroid
Native Jetpack Compose build, package com.duomaxxing.app, with Glance widgets.
Pick the person you want to get better with.
They keep you honest, you keep them honest, and you both end up somewhere better. Two minutes to set up — your first perfect day can be tonight.