# SyncUp-Client — A Syncthing Client > Open-source peer-to-peer file synchronization client for Syncthing protocol. (iPhone/iPad app by Siddarth Ruchir Kumar.) - Source: https://appshunter.io/ios/app/syncup-client/id6762605078 (this page in markdown: same URL + `.md`) - Developer: [Siddarth Ruchir Kumar](https://appshunter.io/developer/1894813080) - Category: Utilities, Productivity - Price: Free - Rating: 3.67/5 from 3 App Store ratings - Age rating: 4+ - Requires: iOS 16.0 · 42 MB - Languages: English - Released: 2026-04-28 - Data updated: 2026-07-22 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/syncup-client/id6762605078/reviews.md ## What is SyncUp? SyncUp is an open-source client for the Syncthing protocol. A peer-to-peer file synchronization protocol that has been around since 2014. If you already run a Syncthing node on your computer, NAS, or home server, SyncUp lets your iPhone join the same network of devices and keep selected folders in sync. All transfers happen directly between devices you own, end-to-end encrypted with TLS 1.3. This app does not host or store your files on any third-party server. It connects only to peers you have explicitly authorized. FEATURES • QR code device pairing -> scan a peer's code or display your own. The 56-character device ID never has to be typed by hand. • Folder sharing controls -> accept, ignore, or auto-accept folder offers from peers you trust. • Live status -> folder progress, peer connection state, and incoming offers update in near real time. • Per-folder pause and resume from Settings. HOW SYNC WORKS ON IOS iOS reserves continuous background execution for a small set of app categories that SyncUp does not belong to. Sync runs in the foreground whenever the app is open, and SyncUp also registers two background tasks that the system schedules opportunistically, typically a short window or two per day, with the exact timing controlled by iOS. For an always-online node, run a Syncthing instance on a computer or home server that stays powered on. Your iPhone reconciles against it whenever it next runs. OPEN SOURCE SyncUp is licensed under MPL-2.0. The Syncthing daemon is embedded in-process and the full source code is available on GitHub. REQUIREMENTS You will need at least one other device running Syncthing (on macOS, Windows, Linux, Android, or another iOS device with this app) for SyncUp to be useful. Visit syncthing.net to learn more about the protocol. ## Key features - QR code device pairing - Folder sharing controls - Live status updates - Per-folder pause/resume - End-to-end encryption - Open-source ## Frequently asked questions about SyncUp ### What is SyncUp-Client? SyncUp-Client is an open-source application that acts as a client for the Syncthing protocol. It allows your iPhone or iPad to join a network of devices and synchronize selected folders directly between them. ### How does SyncUp-Client handle file transfers? All file transfers occur directly between your devices, ensuring your files are not stored on any third-party servers. Transfers are end-to-end encrypted using TLS 1.3 for enhanced security. ### Can I pair devices easily with SyncUp-Client? Yes, SyncUp-Client supports QR code device pairing. You can scan a peer's code or display your own, eliminating the need to manually type the 56-character device ID. ### How does background syncing work on iOS with SyncUp-Client? iOS has limitations on continuous background execution for certain app categories. SyncUp-Client runs in the foreground when open and utilizes background tasks scheduled opportunistically by the system, typically a few times a day. ### Is SyncUp-Client free to use? Yes, SyncUp-Client is completely free to use. It does not have any in-app purchases or advertisements, aligning with its open-source nature. ### What are the requirements to use SyncUp-Client? To use SyncUp-Client, you need at least one other device running Syncthing. This can be on macOS, Windows, Linux, Android, or another iOS device with this app. ### What is the update frequency for SyncUp-Client? The app was last updated on June 29, 2026, with version 1.1.15. While specific update frequency isn't detailed, its open-source nature suggests ongoing development and potential for regular updates. ### What is the user sentiment for SyncUp-Client? Based on the available data, SyncUp-Client has a rating of 3.7 stars from 3 ratings. This indicates a generally positive but limited user reception. ## Version history (last 3 releases) ### 1.1.15 — 2026-06-29 • Web GUI access: open Syncthing's full web interface directly from the Status screen for advanced configuration. • New "Ignore Deletes" option in a folder's Advanced settings, so remote deletions won't remove your local files. • Fixed the Activity/Transfers tab so active transfers and recent changes display reliably. ### 1.1.13 — 2026-05-18 Sync your Obsidian vault, conflict-free New "Obsidian vault" folder preset with minimal/recommended/strict ignore presets. It excludes the workspace.json churn that normally produces .sync-conflict-* files and sets a sane rescan interval so note edits propagate quickly. A free, peer-to-peer, end-to-end-encrypted alternative to Obsidian Sync. Built-in conflict resolver for notes When two devices edit the same Markdown file, a side-by-side merge view lets you resolve sync conflicts in-app instead of hunting down .sync-conflict files. Folder ignore-pattern editor Edit a folder's ignore patterns directly in the app, with one-tap presets. Sync to folders outside the app iOS folder picker (scoped bookmarks) so you can pick and persist external destinations rather than being confined to in-app storage. Guided onboarding A first-run coach walks new users through devices, folders, and settings. Smoother large-folder handling The UI now waits for big folder scans to finish before marking a folder ready, so accepting/adding large folders no longer looks broken mid-scan. Reliability: automatic port fallback If port 8384 is already taken, the backend picks another instead of crashing on startup. ### 1.1.10 — 2026-04-28 No release notes. ## Related topics [syncup](https://appshunter.io/ios/topics/syncup) · [syncthing](https://appshunter.io/ios/topics/syncthing) · [resync](https://appshunter.io/ios/topics/resync) · [pync](https://appshunter.io/ios/topics/pync) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-22.*