Doo vs Multi Scanner USB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
Multi Scanner USB
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Im klinischen Alltag und bei Studien müssen immer wieder Geräte und Patientendaten für einen definierten Zeitraum miteinander verknüpft werden (Langzeit EKG, 24 Blutdruckmessung, Studien mit Wearables...). Mit der Multi-Scanner App können diese Vorgänge nur problemlos durch Scan des jeweiligen Devices und des Patienten Codes erfolgen. Durch die Scann-Funktion der App, die sowohl QR-Codes als auch EAN-Codes erkennt werden die Verknüpfungen eindeutig und mit Historie inklusive Such-Funktion zuverlässig ermöglicht.
Screenshots
Verdict
The clearest difference is price: Multi Scanner USB at Free against Doo's $4.99. Multi Scanner USB also leads on update cadence (every 2 days vs every 2 weeks) and iOS requirement (14.0 vs 17.6). On ads, in-app purchases 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
Multi Scanner USB is free to download; Doo costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Doo ships an update every 2 weeks, Multi Scanner USB every 2 days. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.
| Parameter | Doo | Multi Scanner USB |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.4 (39 ratings) — better | — |
| Positive reviews | 55.2% of reviews | — |
| Number of ratings | 39 — better | — |
| Update frequency | Every 2 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 17.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Ciarlo Software, LLC | Max Eckstein |
In-app purchases
Doo
No in-app purchases
Multi Scanner USB
No in-app purchases









