Comparison

SyncTasks vs 66 Challenge

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

Head to head
About

SyncTasks

This app offers a streamlined task management experience, syncing with Notion and Apple Reminders. It features a minimalist widget for distraction-free focus and a folder system for organization. It can also be used as a standalone to-do list.

Highlights
  • Two-way Notion sync
  • Apple Reminders integration
  • Minimalist home screen widgets
  • Folder-based task organization
  • Standalone to-do list mode
  • No ads or tracking
Features
Read full description

As a daily Notion user, I found the Notion mobile app to be too cluttered and overly complicated for simple tasks management. It is also severely lacking in widget integration which is a crucial part of the iOS experience. I have tried Todoist and TickTick with Zapier, but they lacked support for all the features I needed, AND THERE IS A SUBSCRIPTION?! I wanted a simpler, more integrated solution. That's why I built SyncTasks. Due to popular demand, I've added the option to use SyncTasks as a standalone to-do app without syncing with Notion. This can be especially useful for quickly tracking tasks like grocery lists and other on-the-go needs. Key Features of SyncTasks: Notion Integration: Two-way sync with your Notion databases. This feature also allows you to sync databases from multiple Notion Workspaces. Apple Reminders Integration: Two-way sync with your Apple Reminders. Minimal Task List Widget: My favorite feature! Inspired by dumb phones, this minimalist widget blends seamlessly with your wallpaper to create a distraction-free interface reminiscent of a dumb phone. Your home screen will display only your tasks, with no other distractions, so you can stay focused and get as much done as possible. Stay Organized: I've decided to go back to basics and stick with the trusty folder system to help you group your tasks and stay organized. You can also quickly filter and search through your tasks to find exactly what you need. Exclusive Membership Card: I absolutely love the feeling of getting something unique for myself. So, I've added this totally unnecessary but fun feature! When you first get your card after upgrading to premium (it's a one-time purchase, by the way—because I absolutely hate subscriptions), you can drag and shake it to unlock a series of randomized colors with different gradients on the card. This means your card will be unique to you and you alone. I know it's not essential, but it's kind of exciting, right? No ads. No tracking. Transparent update: Nobody likes being tracked, and I'm no exception. I've also included a Release Notes section in the app where I'll share all the new features, major bug fixes, and improvements with you. This keeps the update process as informative and transparent as possible. I'm doing this because I genuinely want to build and grow alongside my users. If you've encountered a similar issue with the Notion mobile app and are looking for a solution, want a way to stay focused and get things done, or just simply want to hang out, install SyncTasks and join me on this journey. I'll see you on the other side! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

66 Challenge

Build lasting habits with a science-backed system designed to guide you through a 66-day journey. Track daily progress, visualize your transformation, and stay motivated with social features and achievements. Transform your life one habit at a time.

Highlights
  • Daily habit tracking
  • Progress visualization
  • Streak protection
  • Social feed and squads
  • Customizable reminders
  • Achievement badges
Features
Read full description

Transform your life one habit at a time with 66 Challenge - the science-backed app that helps you build lasting habits in just 66 days. WHY 66 DAYS? Research shows it takes an average of 66 days to form a new habit. We've built the perfect system to guide you through every single day. KEY FEATURES: - Daily Habit Tracking - Mark your habits complete each day and watch your streak grow - Progress Visualization - See your 66-day journey unfold with beautiful progress tracking - Streak Protection - Stay motivated with streak counts and milestone celebrations - Progress Photos - Capture your transformation with optional daily photos - Friends & Social Feed - Follow friends, celebrate their wins, and stay accountable together - Squads - Join or create groups to challenge habits together - Achievements - Unlock badges as you hit milestones on your journey - Reminders - Never miss a day with customizable notifications BECOME UNDENIABLE Whether you want to exercise daily, read more, meditate, or build any positive habit - 66 Challenge gives you the structure, motivation, and community to make it stick. Start your 66-day transformation today. --- Terms of Use: https://spiffy-muskmelon-f8f.notion.site/Terms-of-Service-66-Challenge-2f456f682ccc8026ac42f9567c526f57 Privacy Policy: https://spiffy-muskmelon-f8f.notion.site/Privacy-Policy-66-Challenge-1e956f682ccc80f18d6ad0a347d8707f

Screenshots

SyncTasks4 screens
66 Challenge4 screens

Verdict

The call

The clearest difference is rating: 66 Challenge at 5.0 against SyncTasks's 4.6. 66 Challenge also leads on update cadence (every 5 days vs every 10 days) and iOS requirement (13.0 vs 17.0). SyncTasks's advantage is ratings volume (352 vs 5). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SyncTasks sells 5 in-app purchases, starting at $3.99 per month and 66 Challenge sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

66 Challenge holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: SyncTasks has 352 ratings behind it against 5, so its average is the more settled of the two.

UpkeepUpdate frequency

SyncTasks ships an update every 10 days, 66 Challenge every 5 days. The most recent releases landed on September 24, 2026 and September 4, 2026 respectively.

Scorecard4 real differences · 6 level
SyncTasks versus 66 Challenge: the parameters behind the verdict, then further details
ParameterSyncTasks66 Challenge
PriceFreeFree
Rating4.6 (352 ratings)5.0 (5 ratings) — better
Positive reviews69.2% of reviews—
Number of ratings352 — better5
Update frequencyEvery 10 daysEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.013.0 — better
Further details — not scored
Size79 MB18 MB
Age rating4+12+
DeveloperToh Kar LeMoad Ghajjate El Fal

Customer experience

SyncTasks

All ratings352 ratings
Positive90.1%
Neutral1.7%
Negative8.2%
Written reviews195 reviews
Positive69.2%
Neutral7.2%
Negative23.6%

66 Challenge

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

SyncTasks

Reported bugs

4 issues
  • Tasks not syncing properly
  • Widget not displaying tasks correctly
  • App crashing after updates
  • Notification issues with repeat tasks

Requested features

4 requests
  • Add support for Notion calendar sync
  • Improve widget customization options
  • Introduce more view and filter options
  • Develop a desktop or web app version

66 Challenge

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

SyncTasks

Subscriptions2
  • SyncTasks Pro (Monthly)$3.991 Month
  • SyncTasks Pro (Annually)$12.991 Year
One-time3
  • 7-day Free TrialFree
  • SyncTasks Pro$9.99
  • SyncTasks Pro (Lifetime)$34.99
3 purchases

66 Challenge

Subscriptions2
  • Pro Monthly7 Days trial$3.991 Month
  • Pro Annual7 Days trial$29.991 Year
One-time1
  • Pro Lifetime$59.99

Questions

Is SyncTasks free?
SyncTasks is free to download, with in-app purchases available.
Is 66 Challenge free?
66 Challenge is free to download, with in-app purchases available.
Which has better reviews, SyncTasks or 66 Challenge?
66 Challenge is rated higher. SyncTasks averages 4.6 out of 5 from 352 ratings, while 66 Challenge averages 5.0 from 5 ratings.
Do SyncTasks or 66 Challenge have ads?
Neither SyncTasks nor 66 Challenge shows ads.
Which is updated more often, SyncTasks or 66 Challenge?
SyncTasks ships an update every 10 days, and 66 Challenge every 5 days. Most recently, SyncTasks was updated on September 24, 2026 and 66 Challenge on September 4, 2026.

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