Comparison

Opus One vs PlanPlus Mobile

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

PlanPlus Mobile

Boost your productivity with this mobile planning tool. It helps you organize tasks, manage your calendar, and keep track of contacts using a unique prioritization method. Ideal for anyone looking to improve their daily organization and efficiency.

Highlights
  • Prioritized task list management
  • Task delegation
  • Calendar and appointment scheduling
  • Contact management
  • Voice note recording
Features
Read full description

Organize yourself and your business with PlanPlus Mobile! Use our unique planning methodology to boost your daily productivity. Whether you're a student, parent, spouse, manager, or CEO, PlanPlus Mobile is your Productivity Prescription. With tasks, calendar, notes and contacts you can easily manage your core four on the go. The ABC-123 prioritization for your tasks helps to align your day's activities with your most critical deadlines. Our contact management solution is a perfect way to jot down notes and create tasks or appointments related to all of the important people in your life. Features: - Manage your daily prioritized task list, including task delegation - Calendar and appointment management - Complete contact management -Speak your notes after appointments, or to contact history.

Screenshots

Opus One4 screens
PlanPlus Mobile4 screens

Verdict

The call

The clearest difference is review sentiment: Opus One at 66% against PlanPlus Mobile's 18%. Opus One also leads on rating (4.7 vs 2.1) and update cadence (every 3 weeks vs every 2 months). PlanPlus Mobile's advantage is in-app purchases (none vs 2) and iOS requirement (9.3 vs 15.0). On price, ads and device support 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. PlanPlus Mobile asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Opus One holds the better App Store score, 4.7 against 2.1. That said, the two scores are not equally well evidenced: Opus One has 955 ratings behind it against 38, so its average is the more settled of the two. Written reviews point the same way: 66% of Opus One's written reviews are positive against 18% of PlanPlus Mobile's.

UpkeepUpdate frequency

Opus One ships an update every 3 weeks, PlanPlus Mobile every 2 months. The most recent releases landed on September 24, 2026 and September 10, 2026 respectively.

Scorecard7 real differences · 3 level
Opus One versus PlanPlus Mobile: the parameters behind the verdict, then further details
ParameterOpus OnePlanPlus Mobile
PriceFreeFree
Rating4.7 (955 ratings) — better2.1 (38 ratings)
Positive reviews65.7% of reviews — better18.2% of reviews
Number of ratings955 — better38
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionFree — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.09.3 — better
Further details — not scored
Size184 MB36 MB
Age rating4+4+
DeveloperPISO 13, Inc.CompleteXRM,inc

Customer experience

Opus One

All ratings955 ratings
Positive93.4%
Neutral2.6%
Negative4.0%
Written reviews318 reviews
Positive65.7%
Neutral10.1%
Negative24.2%

PlanPlus Mobile

All ratings38 ratings
Positive26.3%
Neutral5.3%
Negative68.4%
Written reviews33 reviews
Positive18.2%
Neutral3.0%
Negative78.8%

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

PlanPlus Mobile

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Opus One

Subscriptions2
  • Opus One Pro7 Days trial$4.991 Month
  • Opus One Professional7 Days trial$39.991 Year
None

PlanPlus Mobile

No in-app purchases

Questions

Is Opus One free?
Opus One is free to download, with in-app purchases available.
Is PlanPlus Mobile free?
PlanPlus Mobile is free to download, with no in-app purchases.
Which has better reviews, Opus One or PlanPlus Mobile?
Opus One is rated higher. Opus One averages 4.7 out of 5 from 955 ratings, while PlanPlus Mobile averages 2.1 from 38 ratings.
Do Opus One or PlanPlus Mobile have ads?
Neither Opus One nor PlanPlus Mobile shows ads.
Which is updated more often, Opus One or PlanPlus Mobile?
Opus One ships an update every 3 weeks, and PlanPlus Mobile every 2 months. Most recently, Opus One was updated on September 24, 2026 and PlanPlus Mobile on September 10, 2026.

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