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.




236+ iOS apps curated and reviewed
4Sync is the household name in 4sync, but it's far from the only option. We track 236+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 2.9★ (17) | No | No | May 2026 | |
| 2 | Free | 4.6★ (3.8K) | No | Yes | Aug 2026 | |
| 3 | Free | 1.7★ (3) | No | No | May 2026 | |
| 4 | $14.99 | 1.0★ (2) | No | No | Jul 2026 | |
| 5 | Free | 4.5★ (844) | Yes | No | Aug 2026 | |
| 6 | Free | 2.0★ (1) | No | No | Jul 2026 | |
| 7 | $11.99 | 5.0★ (1) | No | No | May 2026 | |
| 8 | Free | 4.1★ (299) | No | Yes | Aug 2026 |




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.




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.



This app synchronizes iOS contacts with servers using the legacy SyncML standard. It's designed for users who specifically need this older technology, often recommended by IT departments. It can also act as a local SyncML server for older devices.


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.


Securely transfer files and back up photos between your devices without using third-party servers. Enjoy unlimited storage and speed, with direct peer-to-peer transfers for privacy and efficiency. Supports all file types across various platforms.


This utility app securely connects your Fitbit account to Apple Health, syncing vital health metrics like weight, steps, and sleep. Keep your health profile updated across your iPhone and other fitness applications with ease.


This app facilitates synchronization of contacts and calendars using the SyncML standard. It is designed for users who require this specific legacy technology, often in organizational settings, and need to connect to a SyncML-compliant server. It offers calendar views and enhanced contact group management.


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.




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 service synchronizes calendars, contacts, and tasks across multiple devices and cloud services like iCloud, Google, and Microsoft. It automates data updates to prevent duplicates and ensure consistency across all connected platforms.




This open-source client enables peer-to-peer file synchronization between your iOS device and other Syncthing nodes. It allows direct, end-to-end encrypted transfers between your own devices without relying on third-party servers.


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.


Synchronize files between your iOS devices and other Syncthing-supported platforms without relying on cloud storage. Manage multiple folders and remote devices, with options for sandbox or experimental cross-app sandbox syncing.


Wirelessly transfer photos and videos from your Ricoh GR camera to your iPhone in full resolution. Control your camera remotely, adjust settings in real-time, and manage your media with ease. Compatible with GR II, GR III, GR IIIx, and GR IV models.


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.


This app helps synchronize radio-controlled watches by simulating time signal waves. It supports various international time signal standards and offers a 'Beast Mode' for faster synchronization. Simply place your watch near your device's speaker and start the process.