# Apps I built

Products I ship myself — on the App Store and on the web — each with its own home to try or download.

## [Wakaba](/apps/wakaba)

_App Store_

Japanese vocabulary practice a few minutes a day on iPhone and iPad: flashcards, a ten-level path and four companions, while a bonsai grows with every session. Free, with no ads or in-app purchases.

## [Encore](/apps/encore)

_App Store_

A music party card game for iPhone, iPad, Apple Watch and Mac: reveal a card, pick a song that fits the challenge, and sing. Out now on the App Store.

## [Uptime](https://uptime.sergiodxa.com)

_Web_

Simple, reliable uptime monitoring for developers: websites, APIs, DNS, SSL certificates and cron jobs, with alerts and public status pages.

## [Reader](https://reader.sergiodxa.com)

_Web_

Follow any site that publishes RSS or Atom and read everything it writes in one place — your own library of feeds, folders and saved posts.