abcNotes Full Version vs Opus One
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
abcNotes Full Version
This app allows you to create stylish and functional notes and to-do lists with a realistic paper sticky note feel. It offers extensive customization options for appearance and functionality, including iCloud synchronization and checklist management.
- iCloud Synchronization
- Checklist style notes
- Customizable appearance (backgrounds, skins, icons)
- Virtual desktops
- Scale, rotate, and drag notes
- Email and share notes
- Save notes as images
Read full descriptionHide full description
• iCloud Synchronization between iOS and MacOS X! • Checklist style notes! Manage your tasks directly on notes. abcNotes was designed to become your stylish and highly customizable, functional and easy to use assistant in taking notes and managing To Do lists. abcNotes is an awesome note taking application! It takes advantage of unique iOS devices touchscreen preserving realistic look & feel of paper sticky notes. abc Notes - Checklist & Sticky Note Application for iPhone and iPad (share, email and synch your lists, memos, projects and school notebooks) HINT: To make a checklist note: Double tap the note to edit it. Tap the Note Properties button (blue one with tools icon). Find the checklist switch next to text alignment toggles. The total number of unchecked items is displayed as badge on abcNotes icon. BEAUTIFUL APPEARANCE: • 88 backgrounds to choose from • 45 note skins • 27 badge designs & 115 icons EXTREMELY FUNCTIONAL: • 15 virtual desktops • Scale, rotate and drag notes • Easy to edit, duplicate, move between desktops • Supports any iPad orientation SHARE YOUR NOTES: • Email notes and desktops • Copy note image to any application • Synchronize notes between iOS devices • Save notes as image and place to lock or home screen No more boring note lists – abcNotes brings you the ability to make REAL notes on your iPhone, iPad or iPod Touch. Put everything you need to remember into abcNotes! View you notes the way you want! Rotate your abcNotes to any angle you wish! abcNotes is great for shopping lists, student class notebook, to record lecture and interview notes or to track projects, recordings and more tasks at home, school and university (class or homework). Please feel free to contact us at alsedi.apple@gmail.com if you have suggestions, feature requests, or bug reports.
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.
- 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
Read full descriptionHide 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/
Screenshots
Verdict
The clearest difference is price: Opus One at Free against abcNotes Full Version's $2.99. Opus One also leads on update cadence (every 3 weeks vs every 2 months). abcNotes Full Version's advantage is in-app purchases (none vs 2) and review sentiment (86% vs 66%). On rating, ratings volume, 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
Opus One is free to download; abcNotes Full Version costs $2.99 up front. Opus One sells 2 in-app purchases, starting at $4.99 per month. abcNotes Full Version asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for abcNotes Full Version against 4.7 for Opus One. Both are backed by a comparable volume of ratings — 882 and 955 respectively. Written reviews are what separate them: 86% of abcNotes Full Version's written reviews are positive against 66% of Opus One's.
abcNotes Full Version ships an update every 2 months, Opus One every 3 weeks. Both last shipped on October 6, 2026.
| Parameter | abcNotes Full Version | Opus One |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.8 (882 ratings) — better | 4.7 (955 ratings) |
| Positive reviews | 86.1% of reviews — better | 65.7% of reviews |
| Number of ratings | 882 | 955 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid — better | Subscription |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 41 MB | 184 MB |
| Age rating | 4+ | 4+ |
| Developer | ALSEDI Group | PISO 13, Inc. |
Customer experience
abcNotes Full Version
Opus One
Bugs and requests
abcNotes Full Version
Not enough reviews yet to summarise bugs or 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 moreShow fewer
- Allow customization of UI and themes
In-app purchases
abcNotes Full Version
No in-app purchases
Opus One
- Opus One Pro7 Days trial$4.991 Month
- Opus One Professional7 Days trial$39.991 Year
Questions
Is abcNotes Full Version free?
Is Opus One free?
Which has better reviews, abcNotes Full Version or Opus One?
Do abcNotes Full Version or Opus One have ads?
Which is updated more often, abcNotes Full Version or Opus One?
Other comparisons















