iPhone Screenshots


One Big Thing is the simple app to keep you focused on your biggest task every day.

Every day, you type in one big thing you want to do. Add a few little tasks you might also want to get done. Check the app during the day to focus on your goals. Next day it’s a blank slate. That’s it? Yeah! Trust me, it totally keeps your aim on the game.

What’s New

Version 1.0.6

Major speed improvements! Fixes a bug with a long fade-in time, and vastly improves performance when there's a large archive of old todos.

Ratings and Reviews

1.9 out of 5
16 Ratings

16 Ratings

rbegirliegirl ,

Buggy :(

I like the app and the idea, but it's buggy. I paid for the pro version, and I can't reliably go back to previous days. Some days it will skip one day (so if it's the 20th, I can get to the 19th, 17th and 16th -- but where is the 18th?!) and some days, like today, where I didn't fill anything in but wanted to go back -- it just kept kicking me to today. There aren't a lot of options -- I'm surprised that this is out there with so many bugs.

KMK007 ,

A great app, but the in-app purchase is buggy!!!

Like the app enough to be willing to spend the $4.99 for the upgrade to have history and the skins and labels. Problem is the history would disappear all the time! And other issues like typing a “&” would cause issues. Tried to reach developer but was unsuccessful. Last update on app was a year ago so they appear to be checked out now...

VioletPixel ,

Needs Font Options

I love One Big Thing. I was more productive when I used it and was happy to make the in-app purchase to help support the developer. Unfortunately, and the reason I'm knocking off two stars from my rating, the font is too hard to read because it's so lightweight. I need my todos to be easy to read at a glance, and I simply can't with the current design.


Nicholas Burka
17 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2015-2017 Nicholas Burka
In-App Purchases
  1. Upgrade to Pro $4.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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