An effective to do manager. Use our Master Task to get everything off your mind, easily glance at your day or week on the Planner, move from the list to the schedule. Finally drag and drop to reorder, prioritize or reschedule tasks & events.

Our powerful tools include:

1. Daily Task lists with status, priority and notes.

2. Daily Schedule and Event integration with Calendar.

3. Daily Notes with Motivational Quotes and the ability to include text and maps.

4. Master Task list with side Planner Views.

5. Ability to share your notes by email, send them in a message or post them to Facebook and Twitter

The Universal Subscription includes:

1. Power sync with other Macs and with Opus One Mobile. All in one place and on every device!

2. 10 day weather forecast.

And power features such as:

3. Daily Task lists with:
- Alerts
- Due Dates
- Status
- Priorities
- Color Coded Categories linked to specifc Calendars* (to create Events from Tasks)
- Repeating Rules
- Task Notes

4. Eisenhower Matrix View to easily prioritize Daily Tasks

5. Weekly Planner section with graphic representations of completed and uncompleted tasks by: Category, Compass Role, Value or Weekday. Ever wondered where is your time going? Opus One is here to help you find out and stay on the right track

6. Meeting Planner for Events with the ability to creat Meeting Minutes and send them by mail with just a few clicks!

7. Ability to add Images, Drawings, PDFs and Audio in Notes
* Notes can also be shared via Email, iMessage, Posted to Facebook or Twitter

8. Master Task list (for tasks without due dates) with side Planner Views, to easily schedule them later.

9. Compass Section that includes a wizard for new users, custom Roles linked to Values, compass tasks with counter and notes

10. Goals with:
- SMART description
- Categories
- Tasks
- Custom images
- And a log to keep track of your journey.

11. Personal Growth sections featuring a Mission Builder for those who need a little help building their personal mission statement and values.

12. Tags and advanced search tools so you can find the information you're looking for with ease.

13. The ability to add tasks from your iPad or iPhone to Opus One for Mac using Siri & Reminders ... and more!

Our Universal Subscription is available on a yearly or monthly basis.
One subscription will give you access to Opus One for MacOS and iOS platforms.

Additional Info
– Payment will be charged to iTunes Account at confirmation of purchase
– Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period.
– Account will be charged for renewal within 24-hours prior to the end of the current period.
– Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase.
- Please see our Privacy Policy at and our Terms of Service at

Learn more about Opus One at

What's New

Version 1.6.0

- Left click on month text will take you to today.
- Right click will show the jump to date menu.
- Fixed a bug with attendee's custom roles in the Meeting Planner.
- You can now send an event invitation from within the Meeting Planner.
- Fixed a bug where event notes would get erased.

Ratings and Reviews

4 out of 5

22 Ratings

22 Ratings

Best Productivity App I Have Purchased


I think I have only written one other review, but I am using this app so much that I thought I would give the team there a “shout out.” I have purchased and/or used about a dozen calendar and to-do apps over the past few years. It always seemed that something was missing in each of them—not so with Opus One. It lets me use the hybrid David Allen, Franklin Covey system I use, just like I would on paper. Syncs well with iPhone, iPad, MacMini and MaxAir. As one other reviewer mentioned, I initially had a glitch getting them all to sync, but the support team worked it out and set good information on what needed to be done and where. Unlike a lot of apps, this one has a full user manual. Although it is very easy to use, I have opened the manual (access from the Mac version) and got familiar with some of the deep functionality. I like the Eisenhower Matric and the Weekly Planner for that productivity overview I sometimes need. The only think they could add that would set my world on fire is the ability to use my Apple Pencil in the notes view on the iPad, but even there they thought things through with an icon for a date time stamp. Great app.

Love this app


As a fan of the Franklin Covey planning system, I love the ability that this app provides to keep track of and prioritize (by day) each of my daily tasks. Additionally, this app allows me the ability to keep track of a Master list of tasks that don’t need to be scheduled yet. I’m using the app across multiple platforms simultaneously, including my desktop MAC, MAC Book Pro, iPad Pro and my iPhone 7. At first it was working great, with all of the data being synchronized between all the devices. Then for some reason that I still don’t understand, my Pro subscription (of which I pay monthly) wasn’t being recognized by three of my four devices. After reaching out to Piso13 (developers of this app) support team, they were able to suggest some actions that eventually resulted in a successful solution where all devices are recognizing my Pro Subscription account again, thereby synchronizing my data across all platforms. Aside from this temporary challenge of which their support team was able to fix, I’m thrilled to have access to a great time and activity management tool. Love this app!

Goodbye Opus One

I loved this app. I used it every day for the last couple of years and paid the price gladly. I was so excited when I could sync with my iPhone/iPad because my travel schedule is brutal. To pay $25 every year….that is just plain highway robbery! The lack of updates over the years makes me believe that this will be mostly unsupported. Why, oh why, torture us? I will adapt. I will use my free calendar that syncs nicely so that I don’t lose appointments and tasks. I am not opposed to purchasing the mobile app, but to pay for the privilege over and over again!!. My love affair with Opus is crushed. Apparantly Opus does not appreciate their customers who have been loyal users over the years. I have goals and a mission. My goal is to save for the important things in my life, so Goodbye Opus.. :(

UPDATE: DO NOT PURCHASE!!! I am warning you… unless you like to pay, over, and over and over again!!! Find something simple that works for you! I now use “Things”. Everytime an app goes this way, we must say no unless we all want to keep paying for stuff over and over! Say No with your wallet… the developers will eventually get the picture. But as long as we pay every year… we get whatwe deserve.


PISO 13 Limited
87.3 MB
English, Spanish
Age Rating
Rated 4+
© 2015 PISO 13, Ltd.


  • Family Sharing

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

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