Max Duty
by Mary Claire Brockenshire Lemiski
- Utilities
- Paid
- Zombie
- Small & simple · 82
- Rating
- 5.0
- 11 ratings
- Top 60%among 57 Utilities apps
- Last update
- Aug 23, 2023
- Version 1.0.4
- Size
- 18 MB
- Category
- Utilities
- Tracked since
- Oct 10, 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.
Did you know that as of December 12, 2020, there are new maximum duty period regulations for pilots in Canada? Your maximum duty now depends on your report time, the average flight duration, and the number of flights you fly. Still trying to make sense of those tables and charts? Now you can focus on the day ahead, and "let Max do the math!"
What’s new
Release notes for the latest version, as written by the developer.
Minor updates; no change in functionality.
Rank history
Daily position in the Canada charts. #1 is at the top.
- Best rank
- #10
- Current rank
- #10
- Days charting
- 2 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
82/100
Small & simple
- Developer size100% · 25
Developer: 1 app on the charts
- Audience size100% · 20
Ratings: 11
- App size100% · 10
Size: 18 MB
- Price model100% · 15
Price model: paid
- Demand proof40% · 30
Best rank #10, 1 country
An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2
How the score worksVersion history
- 1.0.4LatestReleased Aug 23, 2023