Tandem: Better habits together
by Engineer Champloo LLC
- Lifestyle
- Paid
- Rating
- 0.0
- 0 ratings
- Last update
- Nov 10, 2025
- Version 1.0.1
- Size
- 36 MB
- Category
- Lifestyle
- Tracked since
- Oct 9, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
Tandem helps you build better habits with friendly accountability. Create simple daily routines, invite friends, and stay motivated together with light, positive nudges.
Track your streaks and see your progress at a glance. Celebrate milestones with achievements that make consistency feel rewarding.
Stay on track with thoughtful reminders that respect your schedule. Notifications are helpful, not spammy, so you can focus on what matters.
Invite friends to follow along, share progress, and send quick reactions like high fives or gentle nudges when someone needs a boost.
Take on the Weekly Habit Quest to push yourself just the right amount. Small wins add up, and Tandem keeps you moving forward day after day.
Your activity is private by default and you control what you share. Build a routine, bring a friend, and stay consistent, together.
What’s new
Release notes for the latest version, as written by the developer.
Updated backend functions
Rank history
Daily position in the Tonga charts. #1 is at the top.
- Best rank
- #2
- Current rank
- #2
- Days charting
- 7 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
81/100
Not flagged as small & simple
- Developer size100% · 25
Developer: 1 app on the charts
- Audience size– · 20
No data, weight redistributed
- App size100% · 10
Size: 36 MB
- Price model100% · 15
Price model: paid
- Demand proof50% · 30
Best rank #2, 1 country
An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2
How the score worksVersion history
- 1.0.1LatestReleased Nov 10, 2025