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Cartasite delivers industrial IoT

Using Realm Mobile Platform, Cartasite built an offline-first app for heavy industries that seamlessly syncs field data with backend systems. Read more


Integral Studio brings creative ideas to life

Digital management company uses Realm Mobile Platform to build innovative, reactive apps that bring musicians and their fans closer together. Read more


Thread Learning brings education into the digital age

Realm Platform helps special education teams coordinate care by syncing data in real-time across multiple devices. Read more


Arccos Golf ups its game with Realm

Arccos delivers a fast, responsive app experience with both online and offline availability for golfers around the world. Read more

Two‑way data sync, real‑time collaboration, offline‑first applications, API bridge, data push

World‑class apps have world-class features

The Realm Mobile Platform enables any development team, no matter the size, to include difficult-to-build features like two‑way data sync and realtime collaboration. Devote more time to what makes your app truly unique and less time to maintaining services.

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Realtime collaboration in as little as 10 lines of code

See the Realm Mobile Platform demo app in action and the developer experience

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Realm Mobile Platform

Deploy data sync for your mobile apps and creative reactive app experiences in as little as 10 lines of code. Realm Object Server and Realm Mobile Database combine to make the Realm Mobile Platform.

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// Authenticating the User
[RLMSyncUser logInWithCredentials:[RLMSyncCredentials credentialsWithGoogleToken:@"google token"]
                    authServerURL:[NSURL URLWithString:@""]
                     onCompletion:^(RLMSyncUser *user, NSError *error) {
  if (user) {
    // Opening a remote Realm
    NSURL *realmURL = [NSURL URLWithString:@"realm://"];
    RLMRealmConfiguration *config = [[RLMRealmConfiguration alloc] init];
    config.syncConfiguration = [[RLMSyncConfiguration alloc] initWithUser:user realmURL:realmURL];
    RLMRealm *realm = [RLMRealm realmWithConfiguration:config error:nil];
    // Any changes made to this Realm will be synced across all devices!
  } else if (error) {
    // handle error
// Authenticating the User
SyncUser.logIn(with: .google(token: "google token"),
               server: URL(string: "")!)
{ user, error in
  if let user = user {
    // Opening a remote Realm
    let realmURL = URL(string: "realm://")!
    let config = Realm.Configuration(syncConfiguration: SyncConfiguration(user: user, realmURL: realmURL))
    let realm = try! Realm(configuration: config)
    // Any changes made to this Realm will be synced across all devices!
  } else if let error = error {
    // handle error
// Authenticating the User
User user = User.login("google token"),
// Opening a remote Realm
String realmURL = "realm://";
SyncConfiguration config = new SyncConfiguration.Builder(user, realmURL).build();
Realm realm = Realm.getInstance(config);
// Any changes made to this Realm will be synced across all devices!
// Authenticating the User
Realm.Sync.User.registerWithProvider('', 'google', googleAccessToken, (error, user) => {
  if (!error) {
    // Opening a remote Realm
    var realm = new Realm({
      sync: {
        user: user,
        url: 'realm://',
    // Any changes made to this Realm will be synced across all devices!
var user = await User.LoginAsync(Credentials.Google("google token"),
                                 new Uri(""));

var realmUrl = new Uri("realm://");
var config = new SyncConfiguration(user, realmUrl);

var realm = Realm.GetInstance(config);
// Any changes made to this Realm will be synced across all devices!

Realm Mobile Database

A better mobile database means better apps. Use the Realm Mobile Database to save data in minutes so you can build mobile apps in a fraction of the time. Our object database is a simple alternative to SQLite and Core Data and proudly open source.

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class Dog {}

Dog.schema = {
  name: 'Dog',
  properties: {
    name: 'string',
    age: 'int',

let realm = new Realm();
realm.write(() => {
  realm.create('Dog', {name: 'Rex', age: 1});

let pups = realm.objects('Dog').filtered('age < 2');
@interface Dog : RLMObject
@property NSString *name;
@property NSInteger age;
@implementation Dog

Dog *dog = [Dog new]; = @"Rex";
dog.age = 1;

RLMRealm *realm = [RLMRealm defaultRealm];
[realm transactionWithBlock:^{
  [realm addObject:dog];

RLMResults<Dog *> *allDogs = [Dog allObjects];
RLMResults<Dog *> *pups = [allDogs objectsWhere:@"age < 2"];
class Dog: Object {
  dynamic var name = ""
  dynamic var age = 0

let dog = Dog() = "Rex"
dog.age = 1

let realm = try! Realm()
try! realm.write {

let pups = realm.objects(Dog.self).filter("age < 2")
public class Dog extends RealmObject {
  public String name;
  public int age;

Dog dog = new Dog(); = "Rex";
dog.age = 1;

Realm realm = Realm.getDefaultInstance();

RealmResults<Dog> pups = realm.where(Dog.class)
                               .lessThan("age", 2)
public class Dog : RealmObject 
  public string Name { get; set; }
  public int Age { get; set; }

var realm = Realm.GetInstance();
realm.Write(() => 
  realm.Add(new Dog
    Name = "Rex",
    Age = 1

var pups = realm.All<Dog>().Where(d => d.Age < 2);
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