Comparison

Doo vs Sky

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Currently charting
Read full description

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

About

Sky

Features
Read full description

You will have all the information about our Sky-Frame Frameless Windows. - References of the Products (Commercial, Residential, Remodels) - Videos - Brochures - Detail References Additional thanks to the Sky-Frame app, our certified Sky-Frame distributors have all the information about our products and the company with them at any time. Whether on the construction site or at a customer appointment - regardless of reception or WLAN, they always have access to product information, references, installation instructions and much more.

Screenshots

Doo4 screens
Sky3 screens

Verdict

The call

The clearest difference is price: Sky at Free against Doo's $4.99. Sky also leads on iOS requirement (15.0 vs 17.6). Doo's advantage is update cadence (every 2 weeks vs every 2 months) and chart position (#86 vs unranked). 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

CostPrice · In-app purchases · Ads · Monetization

Sky is free to download; Doo costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Doo ships an update every 2 weeks, Sky every 2 months. The most recent releases landed on October 15, 2026 and October 2, 2026 respectively.

Scorecard4 real differences · 7 level
Doo versus Sky: the parameters behind the verdict, then further details
ParameterDooSky
Price$4.99Free — better
Rating4.4 (39 ratings) — better—
Positive reviews55.2% of reviews—
Number of ratings39 — better—
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#86 — better—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.615.0 — better
Further details — not scored
Size17 MB57 MB
Age rating4+17+
DeveloperCiarlo Software, LLCPhilipp Hecht

In-app purchases

None

Doo

No in-app purchases

None

Sky

No in-app purchases

Questions

Is Doo free?
Doo costs $4.99, with no in-app purchases.
Is Sky free?
Sky is free to download, with no in-app purchases.
Do Doo or Sky have ads?
Neither Doo nor Sky shows ads.
Which is updated more often, Doo or Sky?
Doo ships an update every 2 weeks, and Sky every 2 months. Most recently, Doo was updated on October 15, 2026 and Sky on October 2, 2026.

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