This is an Android app that receptions can use to log sign-ins to see who's coming in and out of the office. They can then export the sign-in information as a .csv spreadsheet.

This is an extremely powerful flashcards app that specializes in seamless flashcard creation. You can create flashcards with your voice, OCR (text recognition from pictures), importing from .csv files, and much more. You can also browse flashcard sets made across the community and study your flashcards with either browse mode or quizzes. 150,000+ installs on Google Play with a 4.6+ rating after 3,400 reviews

This app helps you keep track of which tiles are remaining in the board game Carcassonne. You can use the dynamic search to quickly find the tiles you care about and reset the game with a single tap.

This is a small Android app I made to play around with Tensorflow. You can add an image through your camera or gallery, and the app will identify objects within it. The model is a basic one that came with the tutorial, so the accuracy isn't amazing haha.

This is a simple portfolio-style website I made for 2 of my Squishmallows. Squishmallows are super cute plushies with backstories, and one of them, Leonard, is actually an aspiring programmer! So I made a website on his behalf - I just wanted to play around with web and see how easy it is to make a portfolio site.

This app lets you seamlessly practice your SQL SELECT skills across a variety of questions with increasing difficulty. Queries are a breeze to write with autocomplete, you can view/copy the answer, and the app smartly evaluates the result, not your query, as there are many ways to solve any SQL query! 415,000+ downloads on Google Play with a 4.7+ rating after 6,700+ reviews

This shows a list of soundbites from the popular video game Borderlands 2 that you can tap to play or set as your ringtone. The soundbites are organized by character, and there is a search bar as well. ~14,000 downloads on Google Play with a ~4.4 rating after 150+ reviews

This is an Android app that lets you browse card translations for the anime card game Weiss Schwarz. ~4,000 downloads on Google Play

I quickly made this app during the post-launch frenzy of Pokemon GO. It started off as an app to crowd-source Pokemon locations and then I extended it to add more wiki-style informational content like eggs, rankings, etc. ~85,000 downloads on Google Play

With this app, you can specify a set of emergency contacts. When you're in need of help, you just need to tap the big button in-app and it will start texting your contacts for help at regular intervals. 1,800+ downloads on Google Play

As the name suggests, this app finds you food instantly. You just open the app and it immediately shows you an open, nearby restaurant, laid out in a beautiful detail view containing a map, pictures, and reviews. Simply tap the navigate button or the map to start heading there! 2,000+ installs on Google Play

This app provides a 1-tap way to find locations of interest that you determine (like "restaurants") nearby. You can also use your voice to do a quick search and find nearby events. Everything is powered by the Yelp API. 500+ installs on Google Play with a 4.3+ rating after 10+ reviews

This app lets you upload pictures of your food and tag it to a restaurant, powered by the Yelp API. You can add descriptions, ratings out of 5 stars, and even tag it to a check-in. Imagine it as a private Instagram, just to remember food. 2,600+ installs on Google Play

With just a tap, you can save your current location to this app, shown as lat/long alongside a name label you choose. You can rename locations and delete them. This is a pretty basic single-screen CRUD app. ~500 installs in Google Play with a 4.5+ rating after 15+ reviews

As the title suggests, this is a game where you race others in math. You get 1 minute to solve as many addition and subtraction problems as you can, and you can see where you rank on the leaderboard. ~1,000 installs in Google Play with a ~4.8 rating after 9 reviews

PAD = Puzzles & Dragons, and it was a mobile game I really got into back in college and played for many years. In it, you pair with other players with certain characters to find dungeons, but the problem is that there wasn't a friend finder feature in-app. This app created a crowd-sourced solution to that problem. 3,500+ installs on Google Play with a ~3.9 rating after 50+ reviews

This is another app I made back in college, inspired by my databases course. It lets users practice SELECT queries on their Android phone. 37,000+ installs in Google Play with a ~4.2 rating after 330+ reviews

This is the more recent and polished version of the first Android app I ever made, Contacts Hacker. The idea is that when your friend's phone is unattended, you can quickly mess with their contacts. 95,000+ installs on Google Play

This app shows a list of soundbites from American politician Bernie Sanders, which you simply tap to play. You can favorite soundbites and set them as your ringtone. 7,000+ installs on Google Play with a ~4.0 rating after 70 reviews

As the name suggests, this is a simple and clean random number generator app. It can generate raw numbers, roll dice, flips coins, and generate lottery tickets. 425,000+ installs on Google Play with a ~4.7 rating after 4,000+ reviews

I made this app, because it was mentioned in the Silicon Valley TV show as a spin-off of the "Yo" app. The idea is that you can quickly message the word "Bro" to your friends. The app reads from your contacts list and from there, you can search through your friends and text them "Bro" in a single tap. 350+ installs in Google Play "Bro" app YouTube clip from Silicon Valley: https://www.youtube.com/watch?v=OVoFzu-vH4o "Yo" app (looks like it's broken as it hasn't been updated in 6 years): https://play.google.com/store/apps/details?id=com.justyo If you want to learn more about the app (and how to improve/extend it), check out the comments!

This app can quickly rename all of a phone's contact to a joke like "Nicolas Cage" or "Batman". The idea is that if your friend's phone is unattended, you can download this app, mess with all their contacts quickly, and put the phone back. And yes, the app can undo the damage it causes. :P 25,000+ installs on Google Play For more of the story behind this app, check out the comments!

The idea behind this app was really simple: Just tap a button and it will suggest a food place nearby for you to go to. The restaurant info comes from the Yelp API, which is really easy to use. 6,000+ downloads on Google Play with a ~4.0 rating after ~40 reviews Technologies: Java, ViewPager, Retrofit Check out the comments to hear the larger story behind this app and how I think it can be improved to a 100k+ users product!

Cat Pix lets you enjoy an endless feed of adorable cat pictures and GIFs. Just open it and start scrolling! Here are some of the features: - CINEMATIC FULL VIEW: Simple click on any cat picture to view it in the app's immersive full screen view. From here, you can double tap/pinch to zoom in/out and drag to focus on whatever part of the picture you want. - FAVORITES: Favorite the pictures you like for easy access and view them from your Favorites page. - WALLPAPER SETTING: To set a cat picture as your wallpaper, open it in the full view and use the zoom/drag controls to get the picture exactly how you want it. After that, just click the wallpaper button at the top of the page to set it as your wallpaper. Backstory: I built this app, because my little brother found a free cat API and I thought it would be cool to make an app from it. I actually used this app as an opportunity to learn Kotlin as we wrote Java at Facebook for Android at the time. I have barely invested in this app, but it has 1,000+ installs on Google Play which is neat I guess.

As the name suggests, this app just selects a string at random from a list of them. It's quite simple, but I have evolved it to have many features over time. Here's some of them: - Create, rename, and maintain custom lists of names. Names can be added, deleted, changed, or duplicated - Choose any number of names at random with or without replacement from the list of your choosing - Spice up the name choosing experience with the app's customizable presentation mode - Export your name lists as .txt or .csv files - Maintains a chronological, clearable, and copy-able history of chosen names Backstory: I built this app back in 2015 for one of my best friends who was a math teacher at the time. The goal was to help him call on students at random in his class, which is why this app was originally called "Random Student Picker". It now has 500k+ installs on Google Play with a 4.5+ rating after 4,700+ reviews!