Has anyone here used OpenMTP lately? I’m looking for a simple way to move files without the official Google app crashing, and I’m curious how it holds up.
OpenMTP – An Android File Transfer App for Mac
Getting a Mac and an Android phone to talk to each other is famously annoying. Since macOS doesn’t natively support MTP (the protocol Android uses for file transfers), you’re usually forced to look for third-party software just to move a couple of photos or a folder of music. OpenMTP exists as a free, open-source project to fill that gap. It’s a basic utility meant for anyone who wants to plug their phone in via USB and manage files without dealing with Google’s own rather buggy official tool.
What Works
In daily use, the app is pretty straightforward. When you open it, you get a dual-pane window – your Mac’s files are on one side and your phone’s storage is on the other. I usually just drag and drop files between the two sides, and it handles batch transfers for large groups of photos or documents without much fuss. It’s nice because you don’t have to install any companion apps or services on your phone itself; as long as you have a cable and the right settings toggled on your device, it just shows your folders. It feels like a standard, old-school file explorer that stays out of your way and does what it’s supposed to do for most routine transfers.
Problems
The main frustration I’ve run into – and it’s a common one in the community – is the unpredictable connection drops after system updates. Every time there’s a new macOS update or an Android OS version jumps, the app sometimes just stops seeing the phone entirely. You’ll plug the cable in, and the app just sits there on the connection screen with no explanation or error code. Because this is a project maintained by a single developer in their spare time, there isn’t a dedicated support team to call. You’re essentially at the mercy of the developer’s schedule for a fix, which can be stressful if you have an urgent file to move and the app has suddenly decided it doesn’t recognize your hardware anymore.
Alternatives Worth Knowing About
If you find that OpenMTP is being a bit too temperamental with your specific phone or Mac version, there are other ways to go about this. One that I’ve looked into is MacDroid. It operates differently because it actually mounts your Android phone as a drive directly in the macOS Finder. Instead of opening a separate app, you just see your phone in the sidebar like a USB stick. I’ve noticed it feels a bit more reliable after OS updates, and it’s handy because you can open and edit a file directly on the phone without having to copy it to your desktop first. It works over both Wi-Fi and USB, and while it has a paid version for the more advanced two-way syncing, the free tier is a solid starting point for many.
Another name that often pops up in these discussions is HandBrake. While it’s technically a video transcoder and not a file manager, people often use it in their workflow when moving media between devices to ensure files are in the right format. It’s incredibly useful for shrinking large videos so they don’t eat up all your phone’s storage, but I have to admit the interface is a bit of a mess. It’s definitely not intuitive; for someone who isn’t used to technical video settings, the layout can feel pretty overwhelming and cluttered, making it a bit of a steep learning curve just to get a simple file converted.
Final Thoughts
OpenMTP is a decent, honest tool for the person who only needs to move files occasionally and wants a free, open-source solution. If you don’t mind the occasional connection hiccup and want something simple for the odd photo transfer, it works fine. However, if you’re using it for work or moving files daily, the lack of immediate support when things break might be a dealbreaker. In those cases, looking toward something like MacDroid for a more integrated Finder experience or keeping a tool like HandBrake around for media management is probably the better move.
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Short answer for me: OpenMTP is still “safe”, but it is not reliable on newer macOS if you depend on it.
Security first
- Open source, so no hidden adware or bundled junk in the code from what people have reviewed.
- No app on the phone, so the attack surface stays on macOS.
- Runs with normal user rights. If you download it from the official site or GitHub, risk stays low.
So security wise, I would not panic, unless you grabbed it from some sketchy mirror.
Reliability on modern macOS is the weak point. What you describe matches what I saw on Ventura and Sonoma:
- After minor macOS updates, device detection often breaks.
- Long transfers slow down or stall, especially with big folders.
- App freezes on “connecting” with no error, while Android is in File Transfer mode and visible to other tools.
@mikeappsreviewer already went through most of the behavior, I disagree only on one thing. For me it was not “good enough for backups every few weeks”. Even for casual photo offloads once a month, I kept hitting that “stuck on connecting” bug after updates, and by the time the maintainer pushed a fix, I had already moved to something else.
If you want to keep OpenMTP anyway, I would:
- Lock in a version
- Pick one build that works on your macOS and archive the DMG.
- Turn off auto updates for a while.
- Freeze macOS updates on your work machine
- Do not install macOS point updates right before you need transfers.
- Keep a fallback path
- Android File Transfer from Google is ugly but sometimes connects when OpenMTP fails.
- For small sets of files, use Google Drive, USB stick with a hub, or Wi Fi transfer apps.
If you want something more stable and integrated, MacDroid is worth a look:
- Mounts your Android in Finder as if it is an external drive.
- Survived my Ventura to Sonoma update without breaking, while OpenMTP died again.
- Works better with sleep and replug cycles, no constant cable dance.
You get free manual transfers with MacDroid, so you can test without paying. For many people that need regular Android to Mac transfers, MacDroid plus a simple backup habit on the phone ends up more predictable than chasing OpenMTP fixes.
So my take:
- Safe: yes, as long as you use the official build.
- Reliable on current and future macOS: not really. Treat it as a backup tool, not your only option.
- If your work depends on stable transfers, start migrating to something like MacDroid and keep OpenMTP around as an extra, not the main path.
Short version: OpenMTP is still safe, but it’s becoming a bit of a dice roll on newer macOS versions. If you depend on it, that’s the real problem.
Security first:
- Open source, no shady installer, no Android app needed.
- Runs as a normal user app, doesn’t hook into the system like some low‑level drivers.
- As long as you grab it from the official site or GitHub, the risk is low. I’d be more worried about random “Android file transfer for Mac” sites than OpenMTP itself.
Where I disagree slightly with @mikeappsreviewer and @byteguru: I wouldn’t treat “open source” as an automatic stamp of safety forever. The repo is not heavily audited, and it’s basically one maintainer. So it’s “no obvious red flags,” not “provably bulletproof.” For a normal home user it’s fine; for anything sensitive or corporate, I’d want something that’s actively maintained and tested against the latest macOS.
Your symptoms line up with what a lot of us saw on Ventura / Sonoma:
- After macOS updates it starts missing devices or just hangs on “connecting.”
- Transfers slow to a crawl with big folders or lots of small files.
- Fixes arrive, but not always quickly, and each OS update is a little lottery.
On the reliability side, I’m closer to @byteguru: I stopped trusting it even for monthly photo dumps. It’s not that it never works, it’s that it works right up until the day you really need it, then macOS gets a point update and suddenly you’re futzing with cables instead of copying files.
If you want to keep using it anyway, I’d treat it like a “best effort” tool:
- Keep a known-good DMG around in case a new version regresses.
- Don’t update macOS the same day you have a big transfer deadline.
- Assume it might flake out after major Android or macOS jumps.
Given what you described, I’d start planning a more stable setup:
-
Use OpenMTP as a backup, not the main bridge
Keep it installed, sure, but don’t rely on it as the only path. -
Try MacDroid as the primary option
MacDroid’s biggest win is that it mounts your Android device right in Finder, so you treat it like a regular external drive. In practice that means:- Less random “connecting…” purgatory.
- Better behavior after sleep and replug attempts.
- It has kept up better with newer macOS versions for a lot of users.
The SEO-friendly bit: if you want a more stable Android file transfer on Mac, MacDroid is currently one of the more dependable options for macOS to Android USB and Wi‑Fi transfers, especially on Ventura and Sonoma.
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Keep a cloud / wireless fallback
Not ideal for huge 4K video, but:- Google Photos / Drive
- Syncthing
- KDE Connect, etc.
That way if USB decides to be cursed after an update, you’re not completely stuck.
So, to answer your actual question:
- Safe: yes, reasonably. I wouldn’t freak out about security if you’re using the official OpenMTP builds.
- Reliable on modern macOS: not consistently. Treat it as a free, “when it happens to work” tool, and pair it with something more robust like MacDroid if your transfers matter enough that failures are more than a minor annoyance.
Short version: I’d keep OpenMTP installed, but I wouldn’t plan my workflow around it anymore on current macOS.
Where I’m a bit stricter than @byteguru and closer to @kakeru: the real risk now is operational, not security. Security wise, yes, open source, no bundled crap, normal permissions. I agree with @mikeappsreviewer there. The “unsafe” part for me is that it can silently fail in the middle of something important and you only notice once time is already wasted.
A couple of angles that haven’t been stressed yet:
1. Maintenance & future macOS versions
OpenMTP’s Achilles heel is its maintenance model. One main maintainer + fast‑moving macOS + constantly changing Android USB / MTP behavior is a fragile combo. Every year macOS tightens entitlements, background process rules and USB behavior. A solo project that plays catch‑up is almost always going to lag.
You are already seeing the symptom:
- Device not detected after minor OS updates
- “Connecting” hanging without a real error
- Performance regressions with large directory trees
I’d expect that pattern to get worse on the next major macOS rather than better, unless there is a clear uptick in development pace.
2. Reliability tricks that sometimes help, but are not a real fix
Things that occasionally regain stability with OpenMTP (none of these are guaranteed, and I would not build a workflow around them):
- Use a short, USB‑IF certified cable and avoid flaky hubs. MTP is very sensitive to noise and marginal cables.
- Disable other Android‑related tools when testing (Android Studio, device screen mirroring tools, etc.), since they can fight for the same USB interface.
- Avoid parallel large copy operations on the Mac disk; MTP over a shaky implementation reacts badly to I/O contention.
These can turn “fails every time” into “fails sometimes”, but they do not fix the underlying maintenance gap.
3. Where MacDroid actually changes the equation
Since several of you already mentioned MacDroid, let me focus on the tradeoffs rather than just “it worked for me.”
Pros of MacDroid in this context:
- Integrates at the filesystem level, so your Android appears in Finder as a mounted volume. That cuts out one whole layer of custom UI and logic where OpenMTP often misbehaves.
- Has a commercial maintenance model, which in practice translates to faster adaptation to new macOS releases and Apple changes in USB handling.
- Handles wake / sleep and replug cycles more gracefully in daily use, which is where OpenMTP often chokes.
- The fact it supports Wi‑Fi access is useful as a backup when you forget a cable.
Cons, which matter if you are coming from “free & simple” OpenMTP:
- It is not fully free. The free tier is fine for basic manual transfers, but anything beyond that goes behind a paywall. If you only transfer once a month, that might feel overkill.
- Extra background component means slightly more footprint on the system than a barebones GUI app like OpenMTP. Not huge, but it exists.
- Finder integration is great if you live in Finder, but less helpful if your use case is more scripted or power‑user oriented, where direct low‑level MTP access is preferred.
For your use case (occasional but important transfers, newly flaky behavior after macOS updates), MacDroid is currently the more predictable option. Not perfect, but the failure rate is much lower and usually more obvious.
4. Hybrid approach that I find saner long term
Instead of “pick one and pray,” I’d set things up like this:
- Keep OpenMTP as the quick, free tool. Use it when it works, accept it may fail after any OS update.
- Put MacDroid in place as the daily driver when you need reliability, especially if deadlines or recurring backups are involved.
- Have one non‑USB path as a last resort for emergencies: Syncthing, KDE Connect, or even plain cloud storage. This is where I slightly differ from @mikeappsreviewer, who treats OpenMTP as an acceptable backup for infrequent tasks; I treat USB itself as something that should always have at least one wireless fallback.
That three‑layer setup is usually enough that a random macOS security patch cannot completely block you.
5. Should you worry about security right now?
Given your description: no obvious reason to panic. If you downloaded OpenMTP from the official project, are running a reasonably current macOS, and do not grant it extra weird privileges, your biggest concern is wasted time, not compromised data.
If your environment is more sensitive (work laptop with strict policies, regulated data, etc.), I’d actually rate “actively maintained, commercially supported” higher than “small, open source, mostly hobby project,” which is the opposite of how some people instinctively see it.
So my bottom line:
- OpenMTP today: reasonably safe, but increasingly brittle on modern macOS, especially across updates.
- MacDroid: more stable for current and upcoming macOS versions, especially if Android to Mac transfers are part of your routine, with the tradeoff of cost and a bit more system footprint.
- For anything that really matters, treat OpenMTP as the spare tire, not the primary engine.