Quick-after the initial time invested

It is use by the entire company across all departments. Our primary app is a large complex highly customized Project Management app. We set up and track every proposal and contract from beginning to end. We handle a variety of different projects in several industries, included but not limited to design, strategy, production, installation and maintenance.

Absolutely. Quick Base has allowed us to build, deploy, expand, refine, continuously improved many apps- not only for our internal use but also directly for clients. Building apps for our clients has also help us understand their business issues more deeply and provide assistance beyond our traditional core services .

Even though marketing touts ease of use for non-techs, I have not seen that in our company. Even those users who are more comfortable with spreadsheets and lists of data, it would be a significant stretch to expect them to build even a simple app with a few tables. Without a grasp of relational databases - how tables relate to each other and the importance of data normalization, the probability of creating and maintaining a usable app in an effective and efficient manner would be very low.

I make additions, changes and/or tweaks almost every week.
I developed an app for a large wayfinding signage project. The project involved designing, building and installing 5,000 signs in a new hospital. During the course of the project, the client had fallen behind in their approval process for the textual content for each sign - which was being done in Excel. I modified the app to allow for the client to accept the recommended text or enter new text, while adding auditing capabilities, so that we had documentable proof of who accepted or modified the text - and when.
It worked flawlessly, and we then also knew which signs were not ready to be built.