Lumibo is a free iPhone app developed by Howard Marshall Wallace. It falls under the category of Utilities & Tools and serves as a loan provident fund calculation tool.

Upon opening the app, users are greeted with the weather profile of their current city. The home page allows for easy switching between different cities' weather by simply clicking on the location button in the upper left corner.

The main feature of Lumibo is its provident fund calculation method. Users can choose the calculation method that suits their needs and enter the relevant data on the calculation page. By following the prompts and clicking on the calculation button, the app provides the desired information. Additionally, Lumibo includes a calculator function, allowing users to perform calculations within the app.