Comparison

Tasks+Cal+Sync 4 vs Smart Tasks

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

Head to head
About

Tasks+Cal+Sync 4

This app synchronizes contacts, tasks, and calendars using the SyncML standard. It's designed for users who need to connect with older systems or specific organizational requirements that rely on this legacy synchronization technology.

Highlights
  • SyncML synchronization for contacts, tasks, and calendars
  • App-internal calendar and task management
  • iOS contact group assignment
  • Acts as a local SyncML server
  • Month, day, week, and list calendar views
Features
Read full description

Please read the following desciption before buying this app! Tasks+Cal+Sync 4 is a niche app, suitable only when you need synchronizing contacts, tasks and calendar with a server or service which uses a standard called SyncML. The app does not support any other synchronisation technology! So please buy this app only if you know for sure that SyncML-based synchronisation is really what you need! This may be the case when the IT people of your organisation say so, and maybe even explicitly recommend using Tasks+Cal+Sync to synchronize calendars, tasks and contacts. In any case, please realize that for using this app, you need to know the URL of your syncml server, the login user to use, and the so called server paths for contacts/tasks/calendar. Only the provider of the SyncML service knows these details and can support you in establishing sync with his SyncML server. We as makers of the SyncML client app cannot! By now, SyncML is a legacy standard. It was invented in 2000, and many of that time's feature phones did support it. Since then, it has been largely superseded by other technologies, most notably CalDAV and CardDAV, which iOS supports out of the box without any extra app. But SyncML still exists, and for some older calendaring systems, it may be the only way to synchronize. For those cases, Tasks+Cal+Sync 4 exists. Tasks+Cal+Sync 4 is a rework of the former Tasks+Cal+Sync app, to allow using SyncML on iOS 10 and later (the original Tasks+Cal+Sync app only works up to iOS 9). But please note that Tasks+Cal+Sync 4 does not provide new features over the original Tasks+Cal+Sync - except for a contact list view with a way to easily assign contacts to groups. Otherwise Tasks+Cal+Sync 4 just carries the original Tasks+Cal+Sync functionality forward to make it usable with iOS10 and later. So now that you are certain SyncML based synchronisation is what you need - here's the summary for Tasks+Cal+Sync 4: • based on a mature and extensively interoperability tested SyncML engine, which powers many SyncML client and server products for different platforms (libsynthesis). • synchronizes app-internal calendar (not the iOS calendar! If you want that, have a look at "SyncML PRO 4"), app-internal tasks (not iOS reminders!) and iOS contacts to a SyncML compliant server or service in the internet or in the local network. • can act as SyncML server in the local WiFi network (e.g. to keep really old mobiles in sync with an iOS device) • has built-in tasks, month, day, week and list views for the iOS calendar (same as in original Tasks+Cal+Sync) • has a contacts list for the iOS contacts, and allows quickly assigning/removing contact group membership (that's a new feature in Tasks+Cal+Sync 4) Please visit the plan44.ch web page (see support link below) for support and FAQ, as well as documentation for download.

About

Smart Tasks

This app helps you organize tasks, reminders, and daily checklists with a clean, interactive layout. Plan your week, manage deadlines, and stay productive with features like color-coding, widgets, and Apple device integration.

Highlights
  • Color-coded task organization
  • Weekly planner view
  • Home screen widgets
  • Apple device integration
  • Apple Watch app
  • Drag & drop organization
  • Smart notifications
Features
Read full description

Featured in App Store's "Hot This Week" for multiple weeks. Welcome to Smart Tasks: a simple, yet powerful way to get things done! See your whole week in a minimalistic and interactive design. Write down everything from your time-sensitive work to things you just don’t want to forget about. Keep yourself from worrying about what you have to do and start getting things done. Simple. Fast. Intuitive. Built for you! FEATURES • Simple and highly interactive design • Drag and drop to quickly add, reorder, delete, and import tasks • Swipe on any task, category, or date to access quick actions to get things done quicker • Choose between 42 aesthetically pleasing colors for categories • Home screen quick actions • Export/import tasks and categories APPLE SPECIFIC FEATURES • Widgets • Siri AI • Dark mode • Notification quick actions • Add, edit, delete, and view Apple Calendar events • Import reminders from the Apple Reminders app • Control Center and Action Button controls support • Device Handoff when adding tasks and categories • Full VoiceOver support • Smart Notifications • Dynamic font support • App Shortcuts PREMIUM FEATURES • iCloud sync • Reminders in tasks • Daily, weekly, monthly, and after completion routines • Notes in tasks • Week layout • Unlimited categories • Change app’s icon color • Special configuration options • Custom swipe actions • Duplicating tasks • Prioritize today • Link, email, and phone number detection in titles and notes iPad SPECIFIC FEATURES • Multiple window support for categories and tasks • Keyboard Shortcuts • Right-click for quick actions • Drag and drop task files for quick importing • Drag and drop multiple task files SUBSCRIPTION Smart Tasks has a subscription service for premium features. No sign-up needed. Upgrade anytime to Smart Tasks +. Without Smart Tasks +, users will only have access to a limited amount of features. Subscriptions from Smart Tasks + will be charged to your card connected to your iTunes account. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. You can manage your subscription in your account settings after purchase. Any unused time left in a given free trial will be forfeited when purchasing a subscription. For more details please look at: Privacy Policy: https://smarttasksapp.com/privacy/ Terms of Service: https://smarttasksapp.com/terms/ Thank you for using Smart Tasks! I'm constantly updating the app to make it better.

Screenshots

Tasks+Cal+Sync 44 screens
Smart Tasks4 screens

Verdict

The call

The clearest difference is price: Smart Tasks at Free against Tasks+Cal+Sync 4's $14.99. Smart Tasks also leads on rating (4.7 vs 1.0) and update cadence (fortnightly vs every 20 months). Tasks+Cal+Sync 4's advantage is in-app purchases (none vs 5) and iOS requirement (10.0 vs 17.0). On ads 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

Smart Tasks is free to download; Tasks+Cal+Sync 4 costs $14.99 up front. Smart Tasks sells 5 in-app purchases, starting at $1.99 per month. Tasks+Cal+Sync 4 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Smart Tasks holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Smart Tasks has 4.5K ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Tasks+Cal+Sync 4 ships an update every 20 months, Smart Tasks fortnightly. The most recent releases landed on July 4, 2026 and September 27, 2026 respectively.

Scorecard7 real differences · 3 level
Tasks+Cal+Sync 4 versus Smart Tasks: the parameters behind the verdict, then further details
ParameterTasks+Cal+Sync 4Smart Tasks
Price$14.99Free — better
Rating1.0 (2 ratings)4.7 (4.5K ratings) — better
Positive reviews—79.3% of reviews
Number of ratings24.5K — better
Update frequencyEvery 20 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Apple Watch — better
Requires iOS10.0 — better17.0
Further details — not scored
Size8 MB87 MB
Age rating4+4+
DeveloperLukas ZellerFrancesco Prospato

Customer experience

Tasks+Cal+Sync 4

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

Smart Tasks

All ratings4,482 ratings
Positive93.7%
Neutral3.2%
Negative3.1%
Written reviews387 reviews
Positive79.3%
Neutral6.7%
Negative14.0%

Bugs and requests

Tasks+Cal+Sync 4

Not enough reviews yet to summarise bugs or requests.

Smart Tasks

Reported bugs

2 issues
  • Syncing issues causing tasks to reorder or disappear
  • Subscription cancellation problems

Requested features

5 requests
  • Option to display completed tasks
  • Ability to delay or snooze tasks
  • Integration with more calendar/reminder apps
  • Monthly view for tasks
  • Keyboard shortcuts for quick task entry

In-app purchases

None

Tasks+Cal+Sync 4

No in-app purchases

5 purchases

Smart Tasks

Subscriptions5
  • Smart Tasks +$1.991 Month
  • Smart Tasks + (Monthly)$2.991 Month
  • Smart Tasks +$9.996 Months
Show 2 more
  • Smart Tasks +$11.991 Year
  • Smart Tasks + (Annual)1 Year trial$17.991 Year

Questions

Is Tasks+Cal+Sync 4 free?
Tasks+Cal+Sync 4 costs $14.99, with no in-app purchases.
Is Smart Tasks free?
Smart Tasks is free to download, with in-app purchases available.
Which has better reviews, Tasks+Cal+Sync 4 or Smart Tasks?
Smart Tasks is rated higher. Tasks+Cal+Sync 4 averages 1.0 out of 5 from 2 ratings, while Smart Tasks averages 4.7 from 4.5K ratings.
Do Tasks+Cal+Sync 4 or Smart Tasks have ads?
Neither Tasks+Cal+Sync 4 nor Smart Tasks shows ads.
Which is updated more often, Tasks+Cal+Sync 4 or Smart Tasks?
Tasks+Cal+Sync 4 ships an update every 20 months, and Smart Tasks fortnightly. Most recently, Tasks+Cal+Sync 4 was updated on July 4, 2026 and Smart Tasks on September 27, 2026.

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