CopperKnob
by Neil Crutchlow
- Lifestyle
- Paid
- Small & simple · 100
- Rating
- 3.2
- 13 ratings
- Top 89%among 258 Lifestyle apps
- Last update
- Aug 2, 2026
- Version 2.0.3
- Size
- 20 MB
- Category
- Lifestyle
- 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.
CopperKnob is an App which allows you to browse over 180,000 line dance stepsheets from the CopperKnob website.
Stepsheets can be saved locally for offline use when no internet connection is available. The app also includes the ability to create, manage, and browse lists of stepsheets, making it easier to organise favourites, downloads, or custom collections. In addition, stepsheets can be printed directly from the app.
You can search for stepsheets by title, choreographer, music, or any category.
Lists of the CopperKnob website’s most recent and most popular line dances are provided, along with music, demo, and tutorial videos for each stepsheet.
Note: CopperKnob requires internet access to connect and view the live stepsheet archive.
What’s new
Release notes for the latest version, as written by the developer.
Display AI and explicit labels when viewing stepsheets.
Added the ability to save notes for dances in lists.
Rank history
Daily position in the US charts. #1 is at the top.
- Best rank
- #4
- Current rank
- #31
- 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.
100/100
Small & simple
- Developer size100% · 25
Developer: 1 app on the charts
- Audience size100% · 20
Ratings: 13
- App size100% · 10
Size: 20 MB
- Price model100% · 15
Price model: paid
- Demand proof100% · 30
Best rank #1, 18 countries
An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2
How the score worksGap check · UK
Is this US chart app missing in UK?
It showed up on a UK chart in the last 30 days, so it is not a gap.
Store not checked yet
This is a candidate, not a verdict. Charts show at most 100 apps, so not charting does not mean no demand. Check the UK store before you decide.
See all gapsVersion history
- 2.0.3LatestReleased Aug 2, 2026