Opus One Downloads & RevenueOpus One: Calendar Planner · App Store
Opus One: Digital Planner
Not in any tracked top chart right now.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperPISO 13, Inc.
CategoryProductivity
PriceFree
Released
Rating★ 4.2 (13)
Version2.9.6
Age rating4+
First seen by us
24 Oct 2026
24 Oct 2026Installs (est.)100k+ worldwide
Opus One: Calendar Planner update history & changes
Last change · 4 events since 13 Sep 2016Full timeline ↓📈Dropped out of every chart we track🆕First spotted by AppInsider📦Version 2.9.6🆕Released on the App Store
Full timeline · 4 events
- 📈Opus One: Calendar Planner dropped out of every chart we trackLast seen 25 Oct
- 🆕Opus One: Calendar Planner first spotted by AppInsider#84 in Top Grossing · Productivity · Russia (found via search)
- 📦Opus One: Calendar Planner version 2.9.6Your task alarms are rebuilt — louder, more persistent, and far more reliable.
This update also includes:
- A new Loud Alarm style that rings at full alarm volume, breaks through Silent mode and Focus, and shows a full-screen alert. Choose Notification or Loud Alarm for each task (iOS 26).
- Set an alarm for when a task is due, or 5 minutes, 15 minutes, an hour, or a day before.
- Real snooze with your choice of length, and escalating repeats that keep alarming until you deal with the task.
- A proper alarm sound, and an alarm sheet that appears when you already have Opus One open.
- Fixed alarms that arrived silently, and non-repeating alarms that could disappear before they fired.
- Crash and sync fixes.… more - 🆕Opus One: Calendar Planner released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.2 ★
13 ratings
Measured
Opus One: Calendar Planner on the App Store
App details
App ID
941852977
Publisher
PISO 13, Inc.
On the store since
Sep 2016
10 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad · Watch
Universal purchase
Content rating
4+
Languages
4
EN FR IT ES
Size
196 MB
Opus One: Calendar Planner downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.2 ★
13 ratings
Measured
Ratings
13
Measured
About Opus One: Calendar Planner
Opus One is a real day planner, not another to-do app. Each day gets its own page — tasks with A/B/C priorities, your schedule, and notes — on a planner that looks and feels like paper. Plan on iPhone, iPad and Mac, and it all stays in sync.
YOUR DAY ON ONE PAGE
• Daily Tasks with A/B/C priorities, status, notes and alarms.
• A schedule that shows your Calendar events alongside your tasks.
• Drag a task onto the schedule — with task durations, the end time fills in automatically.
• Daily Notes with photos, PDFs, checklists and audio.
• Today's weather and a daily quote, right on the page.
PLAN BEYOND TODAY
• Master Tasks: everything on your mind in one list, no due date required.
• Goals with timelines, photos and progress you can see.
• Roles: review the areas of your life each week so nothing important gets crowded out.
• Mission, Values and Vision pages to keep the big picture one tap away.
• Meeting Planner for agendas, decisions and next steps.
NOTES AND JOURNALS
• Rich notes with fonts, colours, tags and your own custom sections.
• Sketch and handwrite with Apple Pencil.
• Journals with 25 covers to choose from, plus a guided Gratitude Journal.
IT GOES WHERE YOU GO
• Home Screen widgets for today's tasks, your mission, your values and daily quotes.
• Live Activities keep today's tasks on your Lock Screen.
• Add a task from Control Centre, or ask Siri.
• Apple Watch app to see your day and tick off tasks from your wrist.
• iCloud sync across iPhone, iPad and Mac.
MAKE IT YOURS
• Planner themes, including seasonal ones.
• Task-complete sounds and rewards for finishing what you planned.
• Colour-coded categories and repeating rules with advanced options.
OPUS ONE PRO
The core planner is free. Opus One Pro adds cloud sync across all your devices, weather, attachments (images, PDFs, audio), Apple Pencil sketching, categories, repeating rules, Goals, Siri and themes. One subscription covers iPhone, iPad and Mac on the same iCloud account. Available yearly or monthly.
Subscription details: Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the period ends. Manage or cancel in your Account Settings.
Privacy Policy: https://piso13.com/privacy-policy-2/
Terms of Service: https://piso13.com/terms-of-service/
YOUR DAY ON ONE PAGE
• Daily Tasks with A/B/C priorities, status, notes and alarms.
• A schedule that shows your Calendar events alongside your tasks.
• Drag a task onto the schedule — with task durations, the end time fills in automatically.
• Daily Notes with photos, PDFs, checklists and audio.
• Today's weather and a daily quote, right on the page.
PLAN BEYOND TODAY
• Master Tasks: everything on your mind in one list, no due date required.
• Goals with timelines, photos and progress you can see.
• Roles: review the areas of your life each week so nothing important gets crowded out.
• Mission, Values and Vision pages to keep the big picture one tap away.
• Meeting Planner for agendas, decisions and next steps.
NOTES AND JOURNALS
• Rich notes with fonts, colours, tags and your own custom sections.
• Sketch and handwrite with Apple Pencil.
• Journals with 25 covers to choose from, plus a guided Gratitude Journal.
IT GOES WHERE YOU GO
• Home Screen widgets for today's tasks, your mission, your values and daily quotes.
• Live Activities keep today's tasks on your Lock Screen.
• Add a task from Control Centre, or ask Siri.
• Apple Watch app to see your day and tick off tasks from your wrist.
• iCloud sync across iPhone, iPad and Mac.
MAKE IT YOURS
• Planner themes, including seasonal ones.
• Task-complete sounds and rewards for finishing what you planned.
• Colour-coded categories and repeating rules with advanced options.
OPUS ONE PRO
The core planner is free. Opus One Pro adds cloud sync across all your devices, weather, attachments (images, PDFs, audio), Apple Pencil sketching, categories, repeating rules, Goals, Siri and themes. One subscription covers iPhone, iPad and Mac on the same iCloud account. Available yearly or monthly.
Subscription details: Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the period ends. Manage or cancel in your Account Settings.
Privacy Policy: https://piso13.com/privacy-policy-2/
Terms of Service: https://piso13.com/terms-of-service/
Latest updates
2.9.6
Your task alarms are rebuilt — louder, more persistent, and far more reliable.
This update also includes:
- A new Loud Alarm style that rings at full alarm volume, breaks through Silent mode and Focus, and shows a full-screen alert. Choose Notification or Loud Alarm for each task (iOS 26).
- Set an alarm for when a task is due, or 5 minutes, 15 minutes, an hour, or a day before.
- Real snooze with your choice of length, and escalating repeats that keep alarming until you deal with the task.
- A proper alarm sound, and an alarm sheet that appears when you already have Opus One open.
- Fixed alarms that arrived silently, and non-repeating alarms that could disappear before they fired.
- Crash and sync fixes.