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FolderSync

foldersync.io

Free plan WindowsmacOSLinuxAndroid
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Spec score 9.3 #1 of 28 in File Sync Software

What it is

FolderSync moves files between folders on a device and cloud services or file servers, and it can also sync folders stored on the same device. One-way sync mirrors a source to a destination; two-way sync is also supported. It can transfer files between two remote locations through an Android device or desktop computer, which temporarily holds the files. Connections include Google Drive, Dropbox, OneDrive, Box and Nextcloud, along with FTP, SFTP, SMB, S3-compatible storage and WebDAV. Its V2 engine adds encryption, pre-sync change analysis, parallel transfers and Cron-based scheduling. FolderSync also supports Tasker integration and configurable events such as schedules and syncs. Encryption protects file names and contents before upload, but works only with one-way sync; a lost encryption password cannot be recovered. FolderSync says account, folder-pair and sync-log data stays on the device, while files go directly to the configured service or server. A free plan is available. Android requires version 8.0 or newer; desktop support covers Windows 10 or newer, macOS 10.15 or newer, and qualifying 64-bit x86 Linux systems.

Spec sheet

What it does
FolderSync synchronizes folders between Android or desktop devices, file servers and supported cloud providers.Read 15 Oct 2026 · foldersync.io
Purpose
FolderSync syncs folders between a device and cloud providers or file servers, and can also sync two folders on the same device.Read 30 Sep 2026 · foldersync.io
Integrations
Supported services include Google Drive, Dropbox, OneDrive, Box, Nextcloud, and many others; supported protocols include FTP, SFTP, SMB, S3-compatible storage, and WebDAV.Read 30 Sep 2026 · foldersync.io
Privacy
FolderSync says account, folder-pair, and sync-log data is stored locally, files sync directly to the configured provider or server, and analytics can be disabled in settings.Read 30 Sep 2026 · foldersync.io
Headquarters
Aarhus, DenmarkRead 28 Sep 2026 · foldersync.io
Maker
Tacit Dynamics Aps lists its address as Trindsøvej 6, 1, 8000 Aarhus C, Denmark.Read 30 Sep 2026 · tacit.dk
Android requirements
The Android app requires Android 8.0 or newer; Android TV, Android Auto and Chromebook are not officially supported.Read 15 Oct 2026 · foldersync.io
Automation
Tasker and similar automation tools can trigger finely controlled synchronization jobs.Read 15 Oct 2026 · play.google.com
Backup limitation
FolderSync does not retain deleted files or older overwritten versions, so it cannot restore historical versions.Read 15 Oct 2026 · foldersync.io
Checksums
Checksum support varies by provider; documented examples include SHA1 for Box and OneDrive and MD5 for Google Drive, Google Cloud Storage and Yandex Disk.Read 15 Oct 2026 · foldersync.io
CLI
The foldersync-cli utility can start or stop syncs, show logs and status, control schedules, list folder pairs, and encrypt or decrypt files.Read 15 Oct 2026 · foldersync.io
CLI prerequisite
The desktop application must be installed and running for the CLI to work.Read 15 Oct 2026 · foldersync.io
Cloud integrations
Documented cloud services include Amazon S3, Box, CloudMe, Drime Drive, Dropbox, Filen, Google Drive, Google Cloud Storage, HiDrive, kDrive, Koofr, MEGA, MinIO, Nextcloud, OneDrive, ownCloud, pCloud, Proton Drive, Storegate, SugarSync, WEB.DE and Yandex Disk.Read 15 Oct 2026 · foldersync.io
Cloud to cloud
It can sync two remote locations, using the installed Android device or desktop computer as an intermediary that temporarily stores transferred files.Read 30 Sep 2026 · foldersync.io
Company founded
LinkedIn lists the company as founded in 2013.Read 15 Oct 2026 · dk.linkedin.com
Company headquarters
LinkedIn lists Tacit Dynamics Aps headquarters in Århus, Denmark.Read 15 Oct 2026 · dk.linkedin.com
Company legal name
Google Play identifies the developer as Tacit Dynamics ApS.Read 15 Oct 2026 · play.google.com
Company ownership
LinkedIn describes Tacit Dynamics Aps as a privately held information-technology company.Read 15 Oct 2026 · dk.linkedin.com
Company size
LinkedIn lists the company size as one employee.Read 15 Oct 2026 · dk.linkedin.com
Credentials
For OAuth-supported providers, FolderSync receives an access token; credentials for some login-based providers are stored in its local database.Read 30 Sep 2026 · foldersync.io
Data path
An independent review reports that files go directly to the configured cloud provider or server rather than through FolderSync servers.Read 15 Oct 2026 · relaaay.com
Desktop licensing
Desktop can run free but requires a license key to unlock automation and webhooks.Read 15 Oct 2026 · foldersync.io
Desktop platforms
The desktop version supports 64-bit Windows 10 or newer, macOS 10.15 or newer, and 64-bit x86 Linux with glibc 2.17 or newer.Read 30 Sep 2026 · foldersync.io
Desktop requirements
Desktop support requires 64-bit Windows 10 or newer, macOS 10.15 or newer, or 64-bit x86 Linux with glibc 2.17 or newer.Read 15 Oct 2026 · foldersync.io
Diagnostics
The privacy documentation describes crash reporting and anonymous usage analytics, with settings to disable analytics.Read 15 Oct 2026 · foldersync.io
Encryption
Optional client-side encryption uses ChaCha20-Poly1305 with 256-bit keys and Argon2id derivation, encrypting names and contents before upload.Read 15 Oct 2026 · foldersync.io
Encryption limit
File encryption is restricted to one-way synchronization and cannot be combined with two-way sync.Read 15 Oct 2026 · foldersync.io
File manager
The Android app includes a file manager for copying, moving and deleting local or remote files and managing Amazon S3 buckets.Read 15 Oct 2026 · play.google.com
File protocols
Supported protocols include FTP, FTPS, FTPES, SFTP, SMB1, SMB2, SMB3, S3-compatible endpoints and HTTPS WebDAV.Read 15 Oct 2026 · foldersync.io
Google Play data safety
Google Play says no data is shared with third parties, while app activity, performance and device identifiers may be collected and data is encrypted in transit.Read 15 Oct 2026 · play.google.com
Google Play free rating
The free FolderSync Android app is rated 4.3 out of 5 from 36.6K reviews on its listing.Read 15 Oct 2026 · play.google.com
Google Play Pro rating
FolderSync Pro is rated 4.6 out of 5 from 25.7K reviews and costs $6.99 on Google Play.Read 15 Oct 2026 · play.google.com
Independent use case
Android Central describes selecting specific cloud folders for phone synchronization and using schedules as often as every five minutes.Read 15 Oct 2026 · androidcentral.com
Limit: ads and usability
Free-app reviews repeatedly report intrusive ads, consent interruptions and confusing error presentation.Read 15 Oct 2026 · chrome-stats.com
Limit: data-loss concerns
Chrome-Stats summarizes reports of deletion bugs and warns that the app may be risky for critical backups.Read 15 Oct 2026 · chrome-stats.com
Limit: sync reliability
Review summaries cite missed schedules, incomplete transfers, random failures and regressions requiring SMB or folder-pair reconfiguration.Read 15 Oct 2026 · chrome-stats.com
Not a server
FolderSync cannot host files and another FolderSync client cannot connect to it as a server.Read 15 Oct 2026 · foldersync.io
Notable update
The Google Play listing records an update on August 25, 2026 described as bug fixes and improvements.Read 15 Oct 2026 · play.google.com
Open-source status
An independent review identifies FolderSync as proprietary software distributed under an end-user license agreement.Read 15 Oct 2026 · relaaay.com
Password recovery
Lost encryption passwords cannot be recovered because FolderSync has no reset mechanism or master key.Read 15 Oct 2026 · foldersync.io
Praise: flexibility
Chrome-Stats reviewers repeatedly praise broad cloud and NAS support, automation and detailed control for power users.Read 15 Oct 2026 · chrome-stats.com
Praise: reliability when configured
Pro reviewers describe the app as sturdy and reliable when configuration is correct, with extensive options and active development.Read 15 Oct 2026 · chrome-stats.com
Privacy storage
Accounts, folder-pair settings and synchronization logs are stored locally in the app database.Read 15 Oct 2026 · foldersync.io
Rating on Chrome-Stats
The free app snapshot shows 4.26 out of 5 from 36,557 ratings.Read 15 Oct 2026 · chrome-stats.com
Rating on Chrome-Stats Pro
The Pro snapshot shows 4.56 out of 5 from 25,704 ratings.Read 15 Oct 2026 · chrome-stats.com
Remote-to-remote sync
Two remote locations such as Google Drive and Dropbox can be synchronized through temporary storage on the device running FolderSync.Read 15 Oct 2026 · foldersync.io
Scheduling
Schedules can run as frequently as every five minutes or as infrequently as monthly, and manual runs are also available.Read 15 Oct 2026 · androidcentral.com
Sync directions
Folder pairs support one-way synchronization to either side and two-way merging.Read 15 Oct 2026 · foldersync.io
Sync modes
It supports one-way and two-way sync; one-way sync mirrors the source folder to the destination.Read 30 Sep 2026 · foldersync.io
V2 features
The V2 sync engine supports cloud-to-cloud sync, encryption, change analysis before syncing, parallel transfers, and Cron-based scheduling.Read 30 Sep 2026 · foldersync.io

Plans and prices

FolderSync Free Android app with ads · Premium in-app purchase removes ads and adds webhooks and automation Read 15 Oct 2026 · foldersync.io
Free Free Android free app includes ads · Desktop can be used free, but automation and webhooks are unavailable Read 30 Sep 2026 · foldersync.io
FolderSync Pro $6.99, paid once Paid Android app · no ads · webhooks and automation Read 15 Oct 2026 · play.google.com

Every FolderSync plan and price →

Strong points and limits

Strong points

  • Supports one-way and two-way synchronization.
  • Connects to cloud services and common file protocols.
  • V2 includes change analysis and parallel transfers.
  • Tasker integration and configurable automation events.
  • Free plan available on Android and desktop.

Limits

  • Encryption is limited to one-way sync.
  • Lost encryption passwords cannot be recovered.
  • Does not retain deleted files or older versions.
  • Android requires version 8.0 or newer.

Who it suits

FolderSync suits people who need to move or synchronize folders across devices, cloud services and file servers. It also fits users who want scheduled transfers or Tasker automation, provided they account for its encryption and backup limits.

Verdict

FolderSync covers device-to-cloud, server and remote-to-remote transfers, with scheduling, automation and optional encryption. Note that encryption only works with one-way sync, and the software does not keep deleted files or older versions as backups.

Where Specifiction places it

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