Comparison

Opus One vs Paper Planner, Diary, Calendar

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Opus One

This app helps you manage tasks and notes with a paperlike interface. Organize your day with daily task lists, schedules, and notes, and use a master task section to capture all your to-dos. Features include drag-and-drop reordering, event integration, and customizable notes.

Highlights
  • Master Task section
  • Daily Task lists with status, priority, and notes
  • Daily Schedule and Event integration
  • Daily Notes with customizable text formatting
  • Drag and drop task reordering
  • Cloud synchronization
  • Sketch drawing canvas
Features
Read full description

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, colors, 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 Center, or ask Siri. • Apple Watch app to see your day and check 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. • Color-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/

About

Paper Planner, Diary, Calendar

This digital planner offers a familiar paper organizer feel with modern digital convenience. Plan your days, weeks, and tasks with multiple views, rich formatting, and secure cloud syncing. Stay organized and achieve your goals with this intuitive tool.

Highlights
  • Multiple daily, two-day, four-day, and weekly views
  • Authentic paper planner design with customizable templates
  • Simple and intuitive interface for quick planning
  • Rich formatting options for events and tasks
  • Seamless synchronization with cloud storage
  • Customizable recurring events and smart reminders
Features
Read full description

Get your perfect daily planner today! Join millions of users worldwide. Looking for a reliable partner to keep your life and work organized? Our digital daily planner is the ideal replacement for your paper organizer, featuring a weekly view plus one, two, and four-day options. It brings together simplicity and powerful functionality, giving you all the tools you need to plan effectively and achieve your goals: daily planner, notes, calendar, diary, scheduler, notebook, and to-do list. Visually, it captures the charm of a classic paper organizer. We've preserved everything you love about traditional planners and brought it into the digital world. Now you can easily create your plans, track your progress, and stay on top of everything with just your smartphone or tablet. Straightforward, intuitive, and familiar. All your records, notes, calendar, important tasks, lists, and plans are always at your fingertips – right on your device. Key features of our digital daily planner: • Multiple views (weekly, four-day, two-day, one-day): see all your plans at a glance or switch between different time periods to plan ahead, review past weeks, or look forward to what's coming. • Authentic paper planner design: enjoy the familiar feel of a paper planner with our thoughtfully designed weekly view that looks like a classic organizer. Timeless style! Pick from various design templates, customize background colors and fonts to match your preferences. • Simple to use: no clutter, no complicated forms. Enter your plans and tasks in seconds, edit or delete them whenever you need to. • Rich formatting options: color-code your events, plans, and completed tasks. Use underlining, bold text, and other styling to highlight what matters most. Easily spot your priority tasks and track what you've accomplished. • Seamless flexibility: switch between weeks, months, and years with a simple swipe. No worries about losing your data or carrying around a heavy planner. Everything syncs securely to your smartphone and personal cloud storage (iCloud). • Customizable recurring events, smart reminders, hourly scheduling, and much more. Stay organized and ready for whatever comes your way. Stop wasting time searching for the right organizer, note app, calendar, or planner. Join millions of users who already trust our digital daily planner to keep them on track. The basic version is completely FREE, and if you want advanced features, you can upgrade to the PREMIUM version with a one-time purchase or subscription. Download your daily planner today and organize your life the way that works best for you! E-mail: appweeklyplanner@gmail.com Standard Apple LICENSED APPLICATION END USER LICENSE AGREEMENT applies to this app: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Opus One4 screens
Paper Planner, Diary, Calendar4 screens

Verdict

The call

The clearest difference is monetization model: Paper Planner, Diary, Calendar at free with in-app purchases against Opus One's subscription. Opus One's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 18.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Opus One sells 2 in-app purchases, starting at $4.99 per month and Paper Planner, Diary, Calendar sells 9 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Opus One against 4.6 for Paper Planner, Diary, Calendar. Both are backed by a comparable volume of ratings — 984 and 1.1K respectively. Written reviews are what separate them: 66% of Opus One's written reviews are positive against 68% of Paper Planner, Diary, Calendar's.

UpkeepUpdate frequency

Opus One ships an update every 3 weeks, Paper Planner, Diary, Calendar every 6 weeks. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

Scorecard3 real differences · 7 level
Opus One versus Paper Planner, Diary, Calendar: the parameters behind the verdict, then further details
ParameterOpus OnePaper Planner, Diary, Calendar
PriceFreeFree
Rating4.7 (984 ratings) — better4.6 (1.1K ratings)
Positive reviews65.7% of reviews68.0% of reviews — better
Number of ratings9841.1K — better
Update frequencyEvery 3 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size187 MB680 MB
Age rating4+4+
DeveloperPISO 13, Inc.Digital Legal Tech

Customer experience

Opus One

All ratings973 ratings
Positive93.6%
Neutral2.5%
Negative3.9%
Written reviews318 reviews
Positive65.7%
Neutral10.1%
Negative24.2%

Paper Planner, Diary, Calendar

All ratings1,142 ratings
Positive91.9%
Neutral2.2%
Negative5.9%
Written reviews297 reviews
Positive68.0%
Neutral8.8%
Negative23.2%

User reviews

Opus One

From 984 App Store ratings

What we love

  • 🚀 Life changing
  • 👍 Great app and support
  • 👍 Integrates well with iPhone
  • 👍 Keeps me organized and efficient
  • 👍 Seamless sync across devices

Room to improve

  • 🐛 Sync issues and reliability problems
  • 🐛 Lost data and app crashes
  • 🔒 Concerns about free trial sign-ups
  • 🔒 Difficult to cancel subscription
  • 👎 Lacks weekly/monthly views

Paper Planner, Diary, Calendar

From 1.1K App Store ratings

What we love

  • 🚀 Easy to use
  • 👍 Simple and straightforward
  • 🚀 Organized layout
  • 👍 Resembles a paper planner
  • 🚀 Efficient for planning

Room to improve

  • 🐛 Sync issues between devices
  • 🐛 Recurring events not working properly
  • 🔒 Lack of password protection or privacy features
  • 🐛 Crashes or bugs after updates
  • 👎 Limited customization options

Bugs and requests

Opus One

Reported bugs

4 issues
  • Sync issues between devices
  • App crashes and data loss
  • Keyboard not working on iPad
  • Distorted font in calendar view

Requested features

6 requests
  • Add weekly and monthly views
  • Improve Apple Pencil support
  • Add project management features
  • Integrate with more calendar/task apps
  • Provide better training and tutorials
Show 1 more
  • Allow customization of UI and themes

Paper Planner, Diary, Calendar

Reported bugs

4 issues
  • Entries disappearing after device changes
  • Recurring events not deleting properly
  • Sync not working between iPhone and iPad
  • App crashing after recent updates

Requested features

7 requests
  • Add monthly view option
  • Integrate with Apple Calendar or Google Calendar
  • Ability to set reminders or alerts
  • Option to change font colors or styles
  • Add a notes or budget section
Show 2 more
  • Improve sync functionality between devices
  • Implement recurring event options (bi-weekly, 4-weekly, etc.)

In-app purchases

2 purchases

Opus One

Subscriptions2
  • Opus One Pro7 Days trial$4.991 Month
  • Opus One Professional7 Days trial$39.991 Year
9 purchases

Paper Planner, Diary, Calendar

Subscriptions2
  • PREMIUM 1 month3 Days trial$1.991 Month
  • PREMIUM 1 year7 Days trial$11.991 Year
One-time7
  • Holiday designs (lifetime)2 variants$1.99
  • 3D Shapes (lifetime)$1.99
  • Textures (lifetime)$1.99
Show 4 more
  • Gradients (lifetime)$1.99
  • Paper Planner PRO (lifetime)$6.99
  • PREMIUM for PRO (lifetime)$11.99
  • PREMIUM (lifetime)$23.99

Questions

Is Opus One free?
Opus One is free to download, with in-app purchases available.
Is Paper Planner, Diary, Calendar free?
Paper Planner, Diary, Calendar is free to download, with in-app purchases available.
Which has better reviews, Opus One or Paper Planner, Diary, Calendar?
Opus One is rated higher. Opus One averages 4.7 out of 5 from 984 ratings, while Paper Planner, Diary, Calendar averages 4.6 from 1.1K ratings.
Do Opus One or Paper Planner, Diary, Calendar have ads?
Neither Opus One nor Paper Planner, Diary, Calendar shows ads.
Which is updated more often, Opus One or Paper Planner, Diary, Calendar?
Opus One ships an update every 3 weeks, and Paper Planner, Diary, Calendar every 6 weeks. Most recently, Opus One was updated on November 1, 2026 and Paper Planner, Diary, Calendar on November 6, 2026.

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