Comparison

Karo vs Mast

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

Head to head
About

Karo

This app simplifies task management by allowing you to delegate tasks to anyone in your contacts, even if they don't have the app. It offers collaborative features, smart reminders, and AI assistance to break down complex tasks. Enjoy a clean, chat-style interface for seamless organization and delegation.

Highlights
  • Task delegation to contacts
  • Collaborative group task management
  • Cross-platform task accessibility
  • AI-powered task breakdown
  • Smart reminders and notifications
  • Apple Reminders integration
  • Chat-style interface
Features
Read full description

Karo is the first of its kind task manager with a focus on delegating tasks! Just install Karo, assign a task to anyone in your contacts and they receive it whether they are on or off the app - it is that simple. KEY FEATURES - Task delegation: Send a task to anyone in your contacts. The assigned person need not be on the app and they'll receive it via WhatsApp or as a message and can perform actions for which you get notified. They would receive a link to the task to complete it. We even remind them so you don't have to! - Collaboration: Just like group chats, but with a checkboxes. Create groups just like how you already do on iMessage or WhatsApp and start collaborating right away. No invites, no complications, simple, efficient and extremely powerful! - Cross-Platform Accessibility: The person you delegate tasks to need not be on the app, they receive it on WhatsApp or as a message with a link which allows them to complete or cancel the task seamlessly. - Activities: We keep track of all activities so you never miss any notifications. - Reliable Notifications: Karo's intelligent notifications ensure that one never misses the deadline for your precious tasks! - Smart Reminders: We try our best to ensure your tasks are completed. We send automatic smart reminders to all the people you've delegated tasks to. - Karo AI: Functional assistant to help you to refactor your thoughts into actionable tasks. It breaks down your larger tasks into smaller actionable tasks too. - Intuitiveness: Karo's clean and familiar chat style interface makes it easy to delegate, organize, and manage tasks. - Deadlines & Reminders: Set deadlines & multiple reminders to your task. - Apple Reminders Integration: Delegate your reminders from Apple Reminders with a seamless bidirectional sync with Apple reminders. Everything you do in the app would reflect in Apple Reminders and vice-versa! - No Contact Syncing: We respect your privacy. Contacts are **only** used offline(on device), and never synced outside. Some other key features: - Automatic date detection - Attachments (images, PDF, etc) - Recurring tasks - Rich search experience - Multi select tasks - 20+ themes - Widgets (Lock Screen + Home Screen + Stand By) - Siri Shortcuts - App Intents With a simple and familiar design, Karo is set to change the way people send tasks and share todo lists! It is perfect for any and everyone that rely on messaging apps to delegate tasks QUESTIONS? If you have any questions, or run into any trouble, please contact us. We would love to help you out. Privacy Policy - https://www.karo.chat/privacy Terms of Use - https://www.karo.chat/tos

About

Mast

Read full description

Odysseus knew he couldn't resist the Sirens, so he had himself tied to the mast. Mast does the same for your phone. Screen Time limits are easy to dismiss. Mast is different: you create commitments, scheduled blocks where your distracting apps lock, and you decide up front what it takes to get them back. Your apps don't just come back when time passes. They unlock when you act. HOW IT WORKS 1. Choose the apps that steal your time: TikTok, Instagram, games, anything. 2. Schedule your commitments: study sessions, work hours, mornings, evenings. 3. Pick your unlock policy, what it takes to earn your apps back: • Photo: snap a photo to prove you did it: gym clothes on, books open, bed made • Timer: run down a focus timer before anything unlocks • Mark done: apps stay locked until you check the task off • Just wait: or simply lock yourself out for a set time WHY IT WORKS Psychologists call it a Ulysses pact: a binding decision you make now, while you're clear-headed, that your weaker future self can't undo. Willpower fails in the moment, so Mast removes the moment. When the commitment starts, the ropes are already tied. There's no "remind me in 15 minutes" to tap through, and the only way out is the one you chose yourself. • Powerful blocking built on Apple's Screen Time technology • Flexible schedules for study, work, sleep or a full digital detox • See the hours you've won back If you have any ideas or questions, please email us at hello@usemast.app. Terms of Use: https://usemast.app/terms

Screenshots

Karo4 screens
Mast4 screens

Verdict

The call

Karo and Mast are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Karo sells 7 in-app purchases, starting at $3.99 per month and Mast sells 2 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Karo ships an update weekly, Mast every 2 weeks. Both last shipped on September 14, 2026.

ScorecardNo meaningful differences
Karo versus Mast: the parameters behind the verdict, then further details
ParameterKaroMast
PriceFreeFree
Rating4.7 (35 ratings) — better—
Positive reviews88.9% of reviews—
Number of ratings35 — better—
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, Mac — betteriPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size46 MB81 MB
Age rating4+4+
DeveloperMsquare Labs Technologies Private LimitedThomas Bryden

In-app purchases

7 purchases

Karo

Subscriptions5
  • Karo Plus$3.991 Month
  • Karo Plus Family$8.491 Month
  • Karo Plus$29.991 Year
Show 2 more
  • Karo Plus7 Days trial$29.991 Year
  • Karo Plus Family$49.991 Year
One-time2
  • Karo Plus$129.99
  • Karo Lifetime Family$179.99
2 purchases

Mast

Subscriptions2
  • Mast Plus - Weekly$7.997 Days
  • Mast Plus - Yearly3 Days trial$49.991 Year

Questions

Is Karo free?
Karo is free to download, with in-app purchases available.
Is Mast free?
Mast is free to download, with in-app purchases available.
Do Karo or Mast have ads?
Neither Karo nor Mast shows ads.
Which is updated more often, Karo or Mast?
Karo ships an update weekly, and Mast every 2 weeks. Most recently, Karo was updated on September 14, 2026 and Mast on September 14, 2026.

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