Do you know that you can add your company logo to Protegus free of charge?
This way you can have your company app without investing into development. Your customers will be reminded each day they are using your service.
Register as installer in Protegus (Link to registration) and once registered, you will be able to add your logo. Then add a new system to your account, and transfer it to your customer. He will see your logo in his app. It looks like this:
Alternatively, we can customize the app completely to your company branding. Here are several examples: