Securely store and access all your digital files, photos, and documents from any device. Effortlessly manage, download, upload, and share your content, and sync data between computers to maintain a consistent personal media library.




210+ iOS apps curated and reviewed
4Sync is the household name in 4sync, but it's far from the only option. We track 210+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.




Securely store and access all your digital files, photos, and documents from any device. Effortlessly manage, download, upload, and share your content, and sync data between computers to maintain a consistent personal media library.






Seamlessly transfer your fitness data from Fitbit to Apple Health. This app automatically syncs your daily steps, calories, sleep, and more in the background. Enjoy a unified view of your health metrics across platforms.




Seamlessly sync your Fitbit data to Apple Health for free. Track heart rate, steps, distance, weight, sleep, and more. Supports all Fitbit devices and multiple accounts, with an optional auto-sync feature for convenience.


Manage your vehicle remotely with this app. Track fuel, tire pressure, and battery levels. Locate your car in parking lots, find charging stations, and lock/unlock doors from your smartphone.


Monitor your vehicle's vital information, track performance stats, and locate essential services like gas stations and EV chargers. This app enhances your driving experience by keeping key data accessible and providing navigation assistance.


This app allows you to export your entire Fitbit history to Apple Health, including detailed metrics like steps, weight, workouts, and sleep stages. It offers automatic background syncing and preserves your existing Apple Health data.


This app automatically transfers your health and fitness data from your Fitbit account to the Apple Health app. It supports syncing over 24 different health metrics, creating a centralized hub for all your wellness information without manual entry.


Monitor your vehicle's vital statistics like fuel, battery, and tire pressure in real-time. The app also offers a dedicated driving mode for safer navigation and a service tracker to manage maintenance history. Keep all your car information and maintenance records in one convenient place.


Easily download, trim, and share media from your DJI drone directly to your phone. Supports 4K, H.265, and RAW files, with background downloading and advanced editing features like hyperlapse creation and panorama stitching.


Easily download, manage, and edit 4K video and photos from your Osmo Pocket and Action cameras directly on your iPhone or iPad. Trim footage, apply color presets, and share your creations instantly without needing a computer.


Effortlessly transfer your health and fitness data from Apple Health to your Fitbit account. Track steps, weight, body fat, sleep, and water intake seamlessly. Note that Fitbit has limitations on third-party step data for challenges.


Fix videos with out-of-sync audio before sharing them on social media. Simply select your video, convert it to automatically sync the audio, and share your perfectly synchronized clips.


This app transfers your fitness data from Apple Health to your Fitbit account. It supports syncing steps, weight, body fat, sleep, and water intake. View all your health metrics in the familiar Fitbit app or dashboard.




Effortlessly synchronize your contacts across Google, iCloud, and Outlook. This reliable app ensures your contact information is up-to-date on your iPhone, supporting two-way syncing and preserving all contact details and groups.


Seamlessly transfer your health and fitness data from Fitbit devices to the Apple Health app. Automatically sync workouts, steps, heart rate, sleep patterns, and more with a modern interface and one-tap functionality.


Wirelessly transfer photos and videos from your Ricoh GR II, GR III, or GR IIIx camera to your phone. Browse, select, and download JPG, RAW, and MOV files with support for multitasking and quick connections.


Seamlessly transfer your complete Fitbit history to Apple Health. This app prioritizes your data privacy by not viewing or storing any synced fitness information. It securely syncs a wide range of data types, including steps, workouts, weight, and sleep analysis.


This app automatically syncs your Fitbit data to Apple's Health app. View all your fitness and health information in one place, including steps, sleep, and weight. Customize which data fields you want to transfer.


Synchronize files between your iOS devices and other Syncthing-compatible platforms without relying on cloud storage. Supports multiple folders and remote devices, with options to use the app's sandbox or access other app sandboxes.