Comparison

CalcKey vs 2Do

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

Head to head
About

CalcKey

Perform calculations directly within any app using a smart keyboard extension. Get instant results for basic and scientific equations, with a history of your calculations. Enjoy a seamless typing experience and smart formatting.

Highlights
  • Keyboard calculator extension
  • Real-time results
  • Basic & scientific calculators
  • Calculation history
  • Smart formatting
  • Standalone app option
Features
Read full description

CalcKey – Smart Calculator Keyboard Calculate Instantly. Anywhere. Anytime. No more switching between apps just to do quick math! With CalcKey, you get a powerful calculator app and an intelligent keyboard extension — so you can calculate right inside Messages, Notes, Mail, or any app without ever leaving your screen. Key Features: - Keyboard Calculator Extension – Instantly calculate while chatting or typing. Works in Messages, WhatsApp, Notes, and more! - Real-Time Results – Get instant answers as you type. - Basic & Scientific Calculators – From quick sums to advanced equations, CalcKey does it all. - Calculation History – View, copy, or reuse past results easily. - Haptic Feedback – Enjoy subtle vibrations for a smooth typing experience. - Smart Formatting – Supports decimals, thousands separators, and clear result display. - Works Everywhere – Use it as a standalone app or directly from your keyboard. Perfect for messaging apps! Reply, calculate, and chat — all without leaving the conversation. CalcKey makes multitasking effortless. Subscription Pricing, Policy & Terms: - Monthly Plan - $3.99/per month - LifeTime Access - $19.99/One time charge - Subscription automatically renews unless auto-renew is turned off at least 24 - hours before the end of the current period. - Payment will be charged to iTunes Account at confirmation of purchase. - Account will be charged for renewal within 24-hours prior to the end of the current period. - No cancellation of the current subscription is allowed during the active subscription period. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. - Any unused portion of a free trial period will be forfeited when the user purchases a subscription. Terms & Condition: https://www.righttracksit.com/calckey/terms Privacy Policy: https://www.righttracksit.com/calckey/privacy-policy

About

2Do

Organize tasks, manage projects, and collaborate with teams using a modern productivity app. Features include fast task capture, AI integration, multiple views, and real-time sync across devices.

Highlights
  • Fast task capture with natural language input
  • AI Assistant Integration (ChatGPT, Claude)
  • Multiple productivity views (List, Board, Calendar)
  • Projects and team collaboration
  • Smart task management with priorities and reminders
  • Real-time sync across devices
Features
Read full description

2Do – Smart Task Management 2Do is a modern productivity app designed to help you organize tasks, manage projects, collaborate with teams, and stay focused without unnecessary complexity. Built for speed, clarity, and flexibility, 2Do helps you capture tasks quickly, organize your workflow, set priorities, manage deadlines, and track progress in the way that works best for you. KEY FEATURES •⁠ ⁠Fast Task Capture Quickly create tasks using text or voice input. 2Do supports natural language input, making task creation faster and smarter. •⁠ ⁠AI Assistant Integration (MCP) Connect securely with ChatGPT, Claude, and other AI assistants through MCP (Model Context Protocol) using OAuth authentication. Create, manage, and update tasks directly from supported AI tools. •⁠ ⁠Multiple Productivity Views Manage your work using List, Board (Kanban), and Calendar views. Organize tasks by status, priority, category, or deadline. •⁠ ⁠Projects & Collaboration Create projects, assign tasks, invite collaborators, and communicate with your team directly inside projects. •⁠ ⁠Smart Task Management Set priorities, deadlines, reminders, and recurring schedules for daily, weekly, monthly, or custom repeating tasks. •⁠ ⁠Subtasks & Organization Break large tasks into smaller subtasks for better planning and tracking. •⁠ ⁠Focus & Productivity Tools Stay productive with reminders, cleaner workflows, and distraction-free task management. •⁠ ⁠Daily Planning & Reflections Review your progress, organize your day, and prepare upcoming priorities more effectively. •⁠ ⁠Real-Time Sync Your tasks and projects sync seamlessly across devices for a smooth experience everywhere. •⁠ ⁠Secure Sign-In Sign in using Apple, Google, email, or phone number authentication. •⁠ ⁠Privacy & Control Your data stays under your control with secure account and data management options. 2Do is built for students, professionals, freelancers, teams, and anyone looking for a cleaner, smarter, and more reliable productivity experience. Latest Updates •⁠ ⁠Added MCP integration with ChatGPT, Claude, and other AI assistants using secure OAuth authentication •⁠ ⁠Completely refreshed UI design for a cleaner and more modern experience •⁠ ⁠Improved Calendar View editing and navigation •⁠ ⁠Enhanced Dark Mode visibility and reliability •⁠ ⁠Refined White Mode with a more polished appearance •⁠ ⁠Fixed multiple layout and responsive design issues •⁠ ⁠Fixed Settings page issues and data-saving problems •⁠ ⁠Improved overall performance, responsiveness, and stability •⁠ ⁠General bug fixes and usability improvements

Screenshots

CalcKey4 screens
2Do4 screens

Verdict

The call

The clearest difference is review sentiment: 2Do at 100% against CalcKey's 0%. 2Do also leads on rating (5.0 vs 3.8) and in-app purchases (none vs 2). On price, ratings volume, update cadence and ads 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. CalcKey sells 2 in-app purchases, starting at $3.99 per month. 2Do asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

2Do holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 8 and 7 respectively. Written reviews point the same way: 0% of CalcKey's written reviews are positive against 100% of 2Do's.

UpkeepUpdate frequency

CalcKey ships an update every 3 weeks, 2Do fortnightly. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.

Scorecard4 real differences · 6 level
CalcKey versus 2Do: the parameters behind the verdict, then further details
ParameterCalcKey2Do
PriceFreeFree
Rating3.8 (8 ratings)5.0 (7 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings8 — better7
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS1515.0
Further details — not scored
Size14 MB15 MB
Age rating4+4+
DeveloperRight Tracks IT LimitedSochenda Hassig

Customer experience

CalcKey

All ratings8 ratings
Positive62.5%
Neutral0.0%
Negative37.5%
Written reviews2 reviews
Positive0.0%
Neutral50.0%
Negative50.0%

2Do

Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

CalcKey

Subscriptions1
  • CalcKey Pro Monthly3 Days trial$3.991 Month
One-time1
  • One time purchase$19.99
None

2Do

No in-app purchases

Questions

Is CalcKey free?
CalcKey is free to download, with in-app purchases available.
Is 2Do free?
2Do is free to download, with no in-app purchases.
Which has better reviews, CalcKey or 2Do?
2Do is rated higher. CalcKey averages 3.8 out of 5 from 8 ratings, while 2Do averages 5.0 from 7 ratings.
Do CalcKey or 2Do have ads?
Neither CalcKey nor 2Do shows ads.
Which is updated more often, CalcKey or 2Do?
CalcKey ships an update every 3 weeks, and 2Do fortnightly. Most recently, CalcKey was updated on October 13, 2026 and 2Do on October 5, 2026.

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