Simple Notes vs Doo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simple Notes
A powerful yet simple note-taking application offering cross-device syncing, customizable themes, and robust security features. It allows users to set reminders, highlight text, and even save notes as images.
- Cross-device syncing (Dropbox/iCloud)
- Zoomable font sizes
- Searchable highlighted text
- Note reminders
- Password protection (AES 256-bit)
- Shake to undo/redo
- Customizable themes and fonts
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Simple, Clean and Easy to Use, Yet Powerful and Loaded with Features. Key Features: --------------------- - One universal app for all your IOS Devices. - Sync your notes with Dropbox and/or iCloud. - Zoom in or out on any note to get the ideal font size suitable for your vision. - Highlight words and search terms inside your notes. - Set reminders to your notes to read them later. - Save text as an image to your camera roll. - Use Password Protection with Advanced Encryption Standard (AES 256-bit) to secure data and to protect your notes from prying eyes. - Shake your device to undo or redo: delete, creating, editing, restoring and more. - 9 font styles with five font colors. - Sort your notes chronologically or alphabetically. - Choose from six different color themes to modify your notes to suit your taste. - The ability to AirPrint your notes. - Auto Paste: when you run the app it will save text that you copied (Text in the Clipboard) automatically as a note. - Night Mode that makes reading in the dark easier on your eyes. - And much more..
Doo
This app helps you overcome procrastination by breaking down tasks into manageable digital cards. Its unique card-based interface and focus on one task at a time promote productivity and habit building. It offers various task types, scheduling options, and cross-device syncing.
- Card-based task interface
- Customizable task groups
- Open-ended, calendar, and location-based tasks
- Share extension for creating tasks from other apps
- Customizable task scheduling and alerts
- iCloud sync across devices
- Task collaboration
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Become a more productive you, one card at a time. WHY DOO? It’s easy to procrastinate your to-do list without a clear first step. Tasks with large goals can feel impossible to finish. Doo helps you procrastinate less. Your reminders become cards that are easy to start and easy to finish. The streamlined edit screen encourages you to create tasks that can fit on a digital index card. Each card shows up in a stack — instead of a list — so you can focus on one thing at a time. BUILD BETTER HABITS Pick a few tasks each day and snooze the rest. Doo helps you create more consistent, sustainable habits. Reduce your anxiety and become a more productive you, one card at a time. *** 2021 Webby Award Nominee *** Best App - Work & Productivity *** 2021 Webby Award Honoree *** Best App User Interface REVIEWS “I absolutely love this app... *incredibly* satisfying...” – Doo 2 Review, Buzzfeed “There’s just enough guilt involved in hitting snooze that I often just complete the task. That’s the point." – WIRED “Doo is a beautiful way to get things done without stressing yourself out.” – Doo 2 Review, The Next Web FEATURE HIGHLIGHTS • Be more productive with a unique, card-based interface • Separate cards into custom groups • Create open-ended, calendar, or location-based tasks • Create tasks within other apps with the share extension • Schedule tasks with custom intervals and alerts • Sync with iCloud across iOS and Mac devices • Collaborate on tasks with other Doo users (requires iCloud) • Support for VoiceOver, Dynamic Text, and keyboard shortcuts • Stay on task with Home Screen & Lock Screen widgets • Complete or snooze tasks from notifications • Drag and drop text, locations, and URLs to create tasks • Screen lock with FaceID, TouchID, or passphrase • Create and complete reminders with Siri • Multitask with Split View and Slide Over
Screenshots
Verdict
The clearest difference is review sentiment: Simple Notes at 82% against Doo's 55%. Simple Notes also leads on price ($2.99 vs $4.99) and iOS requirement (13.0 vs 17.6). Doo's advantage is rating (4.4 vs 4.0) and update cadence (every 2 weeks vs every 2 months). On ratings volume, ads, in-app purchases and monetization model 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
Simple Notes costs $2.99 and Doo $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Doo holds the better App Store score, 4.4 against 4.0. Both are backed by a comparable volume of ratings — 39 and 39 respectively. Written reviews complicate that: 82% of Simple Notes's written reviews are positive against 55% of Doo's, so the app with the better star average is not the one people write more warmly about.
Simple Notes ships an update every 2 months, Doo every 2 weeks. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.
| Parameter | Simple Notes | Doo |
|---|---|---|
| Price | $2.99 — better | $4.99 |
| Rating | 4.0 (39 ratings) | 4.4 (39 ratings) — better |
| Positive reviews | 82.0% of reviews — better | 55.2% of reviews |
| Number of ratings | 39 | 39 |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, Apple Watch |
| Requires iOS | 13.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 25 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Sadah Software Solutions, LLC | Ciarlo Software, LLC |
Customer experience
Simple Notes
Doo
In-app purchases
Simple Notes
No in-app purchases
Doo
No in-app purchases
