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SyncML products for iOS (iPhone, iPad, iPod touch)

Please note: Unfortunately, iOS10 has introduced a problem which renders all on-off-switches in these apps unusable under iOS10. Therefore, the apps are currently not available on Appstore.
Please see here for details and update plans.

The apps below provide synchronisation based on the open vendor independent standard called SyncML (or OMA-DS). Please don't expect these apps to just sync with anything! That's not what they offer.

These apps do offer great SyncML compatibility. If your server or service is actually conforming to the SyncML standard and not only claims to be, these apps will sync just fine *.

Please note however - SyncML is not mainstream, and by now it has been largely superseded by more recent standards. Big players like Google, Microsoft, Apple largely ignored it. So if you want to sync with those, please be aware that installing one of these app is not enough - you also need a bridging solution. There was a variety of solutions for that, some of them still existing (see *)

In all cases - for setting up SyncML you need a SyncML server URL, a login (user/password) and the so called server paths for each type of data to synchronize. Don't ask me for these - the only people who can really tell are those that provide the SyncML service or server software!


Tasks+Cal+Sync Icon


SyncML PRO Icon


SyncML LITE Icon

With autosync, iPad support, continuous calendar view, location search/enter on map, location aware tasks and tags with alarms and more... (follow @syncmlios on twitter for news)

With built-in calendar views (including "continuous"), autosync, iPad support and support for iOS 5 (can create calendars automatically according to server categories) (follow @syncmlios on twitter for news)

Synchronizes iOS built-in Contacts

Synchronizes iOS built-in Contacts

Synchronizes iOS built-in Contacts

Synchronizes built-in calendar (separate from standard iOS calendar)

Synchronizes the iOS built-in calendar (no calendar built into SyncML PRO app itself!)


Synchronizes tasks from built-in advanced tasks manager (separate from iOS5 "reminders"!), including subtasks and tags (if server supports it)


Requires iOS 4.0 or newer (Versions up to 2.8 run from iPhoneOS 3.0)

Requires iPhoneOS 4.2 or newer

Runs on iPhoneOS 3.0 and newer

Built-in tasks and calendar (separate from iOS calendar) with 5 views: tasks, month, week, day, list. SyncML client and server built-in. Contacts are integrated for displaying birthdays and anniversaries and for managing attendees. For contact lookup and editing, use the iOS contacts app.

SyncML sync app - calendar and contacts can be managed as before with the iOS calendar and contacts apps; but the App also provides a built-in alternative access to the iOS calendar which makes autosync possible (whenever calendar is opened or closed)

SyncML sync only app - contacts are managed with the iOS contacts app. App only needed to perform synchronisation.

Restrictions: separate calendar and tasks, does not share data with iOS built-in calendar or iOS5 "reminders". Audible alarms require iOS 4.0 (on iOS 3.0 only indirectly via WebDAV server).

Restrictions: cannot sync attendees, limited range of synchronizable calendar entries of 6 years past to 3 years future.

Restrictions: only contacts

paid app

paid app

FREE app

(*) Solutions supporting SyncML are (list with no claim to be complete): SyncEvolution, Oracle Calendar and BeeHive, GooSync, AddressBookOne, Soocial, eGroupware, Horde, MDaemon, SyncFriend, O-Sync, Synkia, MemoToo, Mobical, Synchronica, Funambol. Most feature phones from Nokia, SonyEricsson, Samsung, Motorola have SyncML clients built-in.
Please refer to the SyncML Wikipedia article for a more detailed list.