Thank you for your feedback. The main idea of the app is reflected in its name – a color wheel – and all the work is built around this concept. Yes, there is a limit of six colors, but that’s exactly the point: to select colors that look harmonious together. Of course, the app’s functionality is broader – you can create your own palettes, edit them, share them, pick colors from photos, and so on. If you need generated palettes with more colors, please check out our app Color Picker.As for using the app across all your devices, we don’t have subscriptions or accounts – you pay once, a fairly small amount, and can use the app whenever and as long as you want without extra payments. The purchase is processed by the app store, so if your devices run iOS, iPadOS, and macOS under the same account, you can easily restore your purchase on them. If you have one Android device and one iOS device, unfortunately, that’s not possible because they are two different operating systems. However, even in that case, you can email us, confirm your purchase, and we’ll gladly offer you a promo code for the Android version.