How I Built an AI-Powered To-Do List App Using Gemini

A Weekend Developer Build Cuts Productivity App Friction

A developer argues that traditional to-do list applications demand too much manual sorting, time estimation, and building. To bypass this friction, the creator designed and built a customized, voice-activated to-do list application using Gemini 3.8 Flash within Google AI Studio over a single weekend. Instead of managing lists through a standard interface, users speak unstructured daily plans aloud to the app. Google’s artificial intelligence then processes the audio, transcribes speech accurately, and automatically structures individual tasks.

Ten-Minute Generation Yields Initial Interface Flaws

The initial version of the software took approximately ten minutes to generate after the developer supplied a prompt specifying Google’s Material Design 3 alongside charcoal and amber color palettes. While the prompt yielded a functioning application immediately, real-world testing revealed several visual and functional flaws.

The first layout suffered from excessive amber coloration, uniform text weights that lacked clear visual hierarchy, and misaligned task boxes that broke formatting whenever a task description wrapped onto a second line.

Iterative Prompting Resolves Drag-and-Drop Failures

Functional hurdles required iterative prompt adjustments during the development process. Drag-and-drop task sorting failed to operate reliably across multiple attempts, prompting the creator to substitute manual up and down arrows for reordering items.

The application initially generated hidden sorting chips that required scrolling, prompting the designer to remove text labels, enlarge icons, and adopt pill-shaped controls inspired by the Google Photos app. The microphone interface shifted from the left side of the screen to the right to improve single-handed accessibility on mobile devices.

Gemini Organizes Dictated Objectives into Sorted Daily Tasks

Operating the finished application requires opening the program and dictating daily objectives aloud for a few seconds. After a processing delay of two to four seconds, Gemini organizes the transcribed audio into discrete tasks while analyzing estimated durations, difficulty levels, and priorities. Users can sort their daily schedule dynamically by choosing whether to tackle the quickest, easiest, hardest, or most important items first.

Progress Tracking and USB Side-Loading on Android

The interface includes visual progress indicators designed to encourage productivity throughout the day. A percentage counter updates dynamically based on completed tasks, giving users an immediate visual cue when they fall behind schedule.

At the end of each day, the application automatically clears finished tasks while preserving any incomplete items for future rescheduling. Side-loading via USB debugging allowed the creator to install the custom tool directly onto an Android phone before the start of the work week.