In some embodiments, a key smoothener and predictor module of a software application executing on a computing device receives a sequence of key events from an input device of the computing device and through a user interface of the software application. The key smoothener and predictor module stores the sequence of key events in a key event queue and predicts the total number of key events for processing in a current processing cycle of the application based on the sequence of key events. A processing component of the software application processes an aggregated key event that indicates multiple keypresses. The number of the multiple keypresses is the same as the predicted total number of key events for the current processing cycle. The software application further causes the user interface of the software application to be updated based on processing the aggregated key event.