What is XAgo?
XAgo is a simple app that lets you keep track of how long ago you did something. You can check it out on xago.app.
I previously used a similar app developed by Tobias Reich called Last Time. The app has unfortunately been removed from the App Store recently.
So let’s make this fun. I’ve given myself a total of one week to develop and design the whole app from the ground up and, in the end, publish it on App Store and Google Play.
Although there was a time limit, I didn’t want to cut corners on features. Below is a checklist of everything the app needs to do/support.
The app has to:
- allow users to create event trackers (later widgets)
- allow users to edit widgets after they’re created
- allow users to customize widgets (change color/icon)
- work well on phone screens
- work well on tablet screens
- have an overview of all the times event was repeated
- have support for dark mode
- have proper internationalization (later i18n)
🏁 So let’s begin 🏁
I have very little experience with native app development. As a college freshman, I got into Android development, but haven’t touched it since. I fiddled with Swift for iOS recently, but not enough that I would feel comfortable creating this app in a week.
I have been playing a lot with React and React Native for the last year or so. I really like React Native, and I wanted to get better at it. More specifically, I wanted to learn to properly support light/dark themes, and I wanted to build one whole project in TypeScript.
To be able to write faster, I will use Expo. I used their blank typescript template to get started.
Usually, I would first set up everything from colors and typography to high-fidelity screens in Figma. However, I feel like designing is like handwriting—If others have to read it, it has to be very tidy and readable. If, however, only you have to read it, you can scribble down notes only you can understand.
What was important for me was to understand how layout would work, and how to signify the most important interactions. When I had the general idea of the screens, I went on to setting up the project.
The week of development
This day was mostly project setup. In the end, the app had support for:
- Inputting the name of the widget
- Choosing colors for the widget
On the second day, I worked more on layout and was messing around with saving dates. At the end of day two the app supported:
- Choosing the date to start tracking from
- Choosing an icon for the widget
I remember that on Tuesday the app already looked like a good proof of concept. I wanted to just stop and say “that’s it, I could finish it whenever I want”. However, when I looked at the checklist again I realized I only supported the first few checkpoints.
I didn’t have much time to work on the app on Wednesday. At the end of the day, the app had support for dark mode and for editing widgets. I also refactored navigation a bit and added a widget detail screen.
Thursday was all about themes. At the end of day four the app supported:
- Switching between different light and dark themes
- Manually setting preferred UI style (dark/light/system)
On the fifth day, I mostly worked on the settings. I began working on the i18n support and added a few more themes. I also added some haptic feedback for key interactions.
On Saturday, I finally had time to do some polishing and to add a widget detail screen. I also gave up on using any third-party calendar pickers as they were either too slow or simply wouldn’t work (potential idea for another side project 😉).
Sunday was the day of final touches. At the end of the last day I:
- Designed an icon
- Designed the splash screen
- Designed App Store and Google Play Store screenshots
- Added simple onboarding screens
- Finalized i18n
Finally, I submitted the app to both stores. I also created a simple landing page.
In the end I also posted on Product hunt and got into the top 10 for that day.
Let’s look at the checklist again to see if I passed the coding challenge!
✅ allows users to create widgets
✅ allows users to edit widgets after their creation
✅ allows users to customize widgets (change color/icon)
✅ works well on phone screens - scales well on small devices (iPhone SE 1st generation) and huge devices (iPhone 12 Pro Max)
✅ works well on tablet screens - supports iPad in full screen, split-screen, and Slide Over mode
✅ has an overview of all the times event was repeated
✅ has support for dark mode - also added additional themes
✅ has proper i18n - supports English (US/UK), Spanish, Swedish, Finnish, and, of course, Croatian
I am not going to say that it was easy. There were times when I definitely wanted to give up. However, I knew that the app would be something I will want to use. Whenever I felt like quitting, I took a break. Those breaks only made me think about the app more and reminded me how much I love creating stuff.
There is a very relatable comic that describes how most side projects end up.
I am happy to say that this project is now complete, and I can move on to the next thing without a guilty conscience from not finishing the last project.
If you have any suggestions or bug reports, feel free to post in the comments below or contact me at firstname.lastname@example.org.
You can also buy me a coffee here: