Comparison

Opus One vs HouseFlow App

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

HouseFlow App

Features
Read full description

HouseFlow – The Ultimate Shared Task Manager for Student Homes and Big Households

 Tired of messy group chats and post-it notes? HouseFlow makes managing house tasks and utilities simple, fair, and even fun.

 Whether you live in student accommodation, a big family home, or just want a better system to stay organised, HouseFlow is your all-in-one solution to manage shared living with ease.

 Key Features
 1. Create & Join Groups
 Easily set up a group for your housemates, flatmates, or family. Share a unique 6-digit code to invite others or join existing groups.

 2. Track Tasks & Utilities 
Log what needs doing — from taking out the bins to checking what food or utilities are available. Keep your household flowing smoothly.

 3. Gamified Leaderboard
 Stay motivated and keep each other accountable. Every completed task earns points. See who’s putting in the work and who’s slacking on the real-time leaderboard.

 Perfect for:

 1. University students sharing accommodation

 2. Large households with lots of responsibilities

 3. Individuals looking to structure their home life

 4. Lightweight & Fast
 No unnecessary clutter. Just the tools you need to manage your house like a pro.

 Privacy Focused
 All user info is securely stored through Supabase. You can delete your account and data anytime via the app.

 Start systemising your shared life. Turn chaos into flow.
 Download HouseFlow today. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://houseflow-website.vercel.app/privacy

Screenshots

Opus One4 screens
HouseFlow App4 screens

Verdict

The call

The clearest difference is update cadence: HouseFlow App at every 5 days against Opus One's every 3 weeks. Opus One's advantage is device support (4 vs 2). On price, ads, in-app purchases and iOS requirement 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 HouseFlow App sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Opus One ships an update every 3 weeks, HouseFlow App every 5 days. The most recent releases landed on September 28, 2026 and September 17, 2026 respectively.

Scorecard2 real differences · 8 level
Opus One versus HouseFlow App: the parameters behind the verdict, then further details
ParameterOpus OneHouseFlow App
PriceFreeFree
Rating4.7 (955 ratings) — better—
Positive reviews65.7% of reviews—
Number of ratings955 — better—
Update frequencyEvery 3 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size184 MB37 MB
Age rating4+4+
DeveloperPISO 13, Inc.Robert Woodhams

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

HouseFlow App

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
4 purchases

HouseFlow App

Subscriptions4
  • Houseflow Gold Monthly$4.991 Month
  • Platinum Monthly$5.991 Month
  • Gold Annually$49.991 Year
Show 1 more
  • Platinum Annually$59.991 Year

Questions

Is Opus One free?
Opus One is free to download, with in-app purchases available.
Is HouseFlow App free?
HouseFlow App is free to download, with in-app purchases available.
Do Opus One or HouseFlow App have ads?
Neither Opus One nor HouseFlow App shows ads.
Which is updated more often, Opus One or HouseFlow App?
Opus One ships an update every 3 weeks, and HouseFlow App every 5 days. Most recently, Opus One was updated on September 28, 2026 and HouseFlow App on September 17, 2026.

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