Stuff
Explore the apps I’m building now
Current releases, product details, and download links now live together at ezequiel.app.
Removed apps
Portugal Beaches
A guide to beaches in Portugal, with weather, surf conditions, amenities, and directions.
Removed because the company that owned the beach cameras asked me to shut it down 😅. This one felt like a flop to me, though it still finished with 1,000+ downloads.
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Amarelinhos
A Lisbon-area bus app for Carris Metropolitana routes, schedules, and maps.
Removed because Carris Metropolitana hired João Vasconcelos—one of the best transport-technology developers I know—to build a solid official app, making Amarelinhos unnecessary. For context, João had created GeoBus, the controversial app Carris blocked. Amarelinhos still reached 4,000+ downloads, which is a lot for Portugal.
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Watch Clicker Presentation
An Apple Watch remote for moving through presentation slides on a Mac.
Removed because Apple sherlocked it: Keynote can now control presentations from Apple Watch. Watch Clicker still reached 2,600+ downloads.
View archive →![[ words ] app icon](/words.png)
[ words ]
A small iPhone app for saving words and translations while studying a language.
Removed because I am pretty sure I published it mainly to learn Core Data. I was still surprised that such a simple app reached 300+ downloads.
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SampaTrilhos
A São Paulo Metro and CPTM status app with an Apple Watch companion.
Removed because it was a watchOS 1-era app and I never carried it forward. Even so, it reached 3,000+ downloads.
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TutSpace
An iPhone game about a space turtle fighting jellyfish.
Removed because it came from the pre-Swift era and we never updated it through that transition. It still reached 3,000+ downloads.
View archive →Project-YoutubeMetadata
2022YouTube Metadata is an npm package and a Swift wrapper that helps you get YouTube metadata from a URL without using the YouTube API.
Speed Manager ⎋
2022SpeedManagerModule is a simple speedometer class for iOS and watchOS. The class measures speed using an iPhone or Apple Watch, based on CLLocation.
Cordel Aumentado 🌵
2021Cordel Augmented is an augmented reality iOS application that aims to be an auxiliary tool for teaching literature in the context of cordel literature.
Master's degree project 🎓
2021This research aimed to develop a study on the use of wearables in games, particularly the detection of gestures to use as input devices in games.
NFCPlay 🛜
2021NFCPlay is a project that presents the use of an NFC tag (Near Field Communication) as an input mechanism on VR headsets.
Damas 🕹️
2020Developed using Unity 3D and C#, Damas is a checkers game without the use of classical artificial intelligence algorithms.
Genetic Racing 🏎️
2020Developed using the Unity3D engine and C#, Genetic Racing uses a genetic algorithm (GA) to approximately find and learn to cross the racetrack.
Plano Inclinado REA 📐
2020Plano Inclinado REA is a very simple inclined plane web simulator hosted on GitHub Pages.
JoyPen 🖊️
2020JoyPen is a small app built in Python using OpenCV to track the movements from a cardboard joystick, to control racing games.
WatchShaker
2017Simple motion detector for ⌚️ (watchOS) shake gesture. Shake your Apple Watch! WatchShaker is a watchOS helper to get your ⌚️ shake movements.
Hora do Remédio 💊
2015Project made during a hackathon in a Campus party 2015. A smart pill box, integrated with an iOS App.
Master Exploder 🎸
2015A game controlled by computer vision based on image segmentation and construction of a convex hull with Jarvis’s Algorithm in the identification of hand gestures (hand-tracking).
🗑️ Project: Lixo Papão - A Creative Solution for Encouraging Recycling
2015Lixo Papão, a creative solution to encourage recycling through an app based on social networks, gamification, collective intelligence, and the Internet of Things.
🚱🚘 Project: Breathalyzer with Arduino and iOS
2014Breathalyzer made with Arduino and interfaced with an iDevice using FSK communication.
Project-Logikid
2013Simple Allegro 5 Game to tech Logic Gates.
Some of my apps are focused on academics
See the current academic apps and their download links at ezequiel.app.
Academic projects
GitHub to BibTeX Citation Generator
2025A simple web tool that takes any GitHub repository URL and generates a properly formatted BibTeX citation.
Citations count lib
2025A Python library to retrieve citation counts from CrossRef, OpenCitations, and Google Scholar.
PRISMA Flow Diagram Package
2025LaTeX package for creating PRISMA 2009 flow diagrams with an intuitive API.
Scholarly Publications Fetcher
2024Python package to fetch publication data from Google Scholar profiles.
Campeonato Brasileiro
2026Codex skill, CLI, and MCP server for Brazilian Championship Série A, B, C, and D standings, rounds, team snapshots, and automation triggers.
GitHub Citation
2026Agent skill, CLI, MCP server, and web tool for generating BibTeX, APA, MLA, Chicago, IEEE, and Harvard citations from GitHub repositories.
SG-FLW Classifier
2026Codex-compatible classifier skill for applying the SG-FLW measurement framework to serious games and gamified interventions addressing food loss and waste.