It would be really nice if we were able to use on a vertical screen for a phone.
Estimated from the grossing charts of Oct 25, 2026 in the 53 countries we track, and ratings growth on the App Store.
From our daily snapshots of every grossing chart.
| Sep 26, 2026 | not in a grossing chart |
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| Oct 25, 2026 | not in a grossing chart |
Measured from the store, not estimated.
From the latest 36 reviews on the Germany App Store, Jul 27, 2012 to Jan 24, 2026: 64% are 1 or 2 stars. Open a theme to read what people wrote.
13 of the 1 and 2 star reviews.
★★★★★ My older iPad doesn't work with updated app.
★★★★★ This app has been deliberately sabotaged to force consumers to use subscription apps. I've used this app for years. It worked fine. Now it's fkd. $40… poof! 12DEC2024 it's been fixed. Only took several years.
★★★★★ The app worked well, but after the updates it stopped working!
7 of the 1 and 2 star reviews.
★★★★★ This app has been deliberately sabotaged to force consumers to use subscription apps.
★★★★★ waste money, don't download!
★★★★★ At first I thought that the program is quite expensive, but with few options in the market I decided to buy.
6 of the 1 and 2 star reviews.
★★★★★ My older iPad doesn't work with updated app.
★★★★★ The App developer has to update it asap, since it costed us an ammount to download it.
★★★★★ Was great now it's useless
4 of the 1 and 2 star reviews.
★★★★★ IT NO LONGER WORKS AND THERE IS NOT APP SUPPORT!
★★★★★ This app doesn't work anymore and no app support.
2 of the 1 and 2 star reviews.
★★★★★ When the app went from Aerosmith to this new company all my notes were deleted.
★★★★★ A simple cloud backup would be a huge feature for backing up data.
2 of the 1 and 2 star reviews.
★★★★★ Was great now it's useless
★★★★★ The app is useless now after years of using it.
Nothing stands out.
2 of the 4 and 5 star reviews.
★★★★★ This used to be a really nice app with useful information for study of lights and switches.
★★★★★ I like it and the app is very useful for treaning and even more.
Found by matching words and phrases in the reviews, not read by a person. A review can count toward more than one theme.
Latest reviews, Germany App Store.
It would be really nice if we were able to use on a vertical screen for a phone.
When the app went from Aerosmith to this new company all my notes were deleted. I spent many hours annotating the lights and switches. Ugh!
App no longer working. How do I go back to older version? My older iPad doesn’t work with updated app.
This app is no longer supported or updated. It does not work with current all iOS platforms. ***Updated*** After years of not being able to use from lack of developer support, it’s finally updated and usable. Due to the lack of support and and unanswered requests for updates, I can’t give it anymore than 3 stars. It works for now, but who knows what’s to come in a few months.
How about an update for iOS 13.
This app has been deliberately sabotaged to force consumers to use subscription apps. I’ve used this app for years. It worked fine. Now it’s fkd. $40… poof! 12DEC2024 it’s been fixed. Only took several years.
Apple Search Ads this app ran in the last 90 days, from Apple's public ad repository.
Apple only publishes ads shown in the EU (EU Digital Services Act), with a 7 day delay. An app that advertises only outside the EU shows nothing here.
Where this app is buying and earning its users. Each link opens pre filtered.
Most repeated terms in the listing. Highlighted ones also appear in the title.
Released Feb 3, 2012. Current version shipped Jun 2, 2025.
Prices, ranks and reviews are per country. Revenue above is already worldwide.