Copsy›Copsy vs Silverstack

Copsy vs Silverstack: the free, simpler alternative for verified offload

Written by a working DIT · Copsy · Last verified June 2026

Short answer

Copsy, a free Mac camera-offload app, is the closest free alternative to Pomfort Silverstack for the copy-and-verify core. Plug in an SD, CFexpress or camera card and Copsy auto-detects it, copies the footage to your drive and to Google Drive or Dropbox in parallel, verifies every file with ASC-MHL checksums. It pings you on Telegram when it's done. Free, no card limit, no signup.

To be fair: Silverstack is a powerful high-end DIT lab tool (clip library, QC, LUTs, reports), and Copsy does not replace the whole DIT cart. But Silverstack costs roughly $300–$900/year. If all you need is fast, verified offload to a drive and the cloud, Copsy does that part for free.

Download Copsy for Mac → · macOS 13+ · no account needed

What Silverstack actually is

Pomfort Silverstack (sold today as Silverstack XT and the higher-end Silverstack Lab) is professional DIT software built for the full data-management cart on set. It's genuinely excellent: a deep clip library, quality-control playback and scrubbing, LUT and look management, rich metadata handling, ASC-MHL workflows, and detailed deliverable reports. It's the tool a dedicated DIT reaches for when the job needs a managed media pipeline end-to-end.

That power comes with two trade-offs that send a lot of shooters looking elsewhere: it's a subscription that runs roughly $300–$900 per year depending on tier, and it has a real learning curve. If you're a solo shooter, a one-person production, or a second unit that just needs to get a card copied safely and move on, most of Silverstack's surface area goes unused.

What Copsy is (and isn't)

Copsy is a free Mac app that does one job well: it offloads camera cards and verifies them. It auto-detects the card by content (Sony, ARRI, Blackmagic/BMD, RED, Canon, drones, audio recorders), copies the footage to an external drive and optionally to Google Drive or Dropbox in parallel, organizes everything by date and source, and verifies every file with ASC-MHL checksums, the same standard the high-end tools use. When it's done, it sends you a Telegram message.

Copsy is not trying to be a DIT lab. There's no clip library, no QC scrubbing, no LUT pipeline, no deliverable reports. It deliberately stops at the offload step. Here's the wedge: the part of Silverstack most people rely on every single shoot is copying the card, mirroring it to the cloud, and proving it copied correctly. Copsy does exactly that, for free.

Copsy vs Silverstack — honest comparison

Feature	Copsy	Pomfort Silverstack	DaVinci Resolve Clone Tool
Price	FREE	~$300–$900/yr PAID	FREE
ASC-MHL checksum verification	✓ built-in	✓ deep	xxHash, no ASC-MHL
Auto-detect card type (Sony/ARRI/RED/BMD/Canon/drone/audio)	✓	manual import	—
Copy to a drive AND cloud (Drive/Dropbox) in parallel	✓	drives / LTO	drives only
Telegram notification when done	✓	—	—
Clip library / QC / LUTs / reports	— not the goal	✓ full DIT lab	edit app only
Learning curve	minimal	steep	moderate
No signup / no account	✓	license required	✓
Platform	macOS 13+	macOS	macOS / Windows / Linux

Pricing and features change — figures above were last verified in June 2026. Silverstack is sold as XT and Lab tiers plus shorter project licenses; check pomfort.com for current details.

Who should use which

Choose Copsy if you…

Offload SD / CFexpress / camera / drone / audio cards on a Mac and want it verified, not just dragged in Finder.
Want a drive copy and a Google Drive or Dropbox copy from the same offload.
Don't want a $300–$900/year subscription for the core "copy a card safely" workflow.
Are a solo shooter, run-and-gun crew, or second unit who needs speed and proof of copy, not a full media pipeline.
Like getting a Telegram ping when the card is done so you can walk away.

Stick with Silverstack if you…

Run a real DIT cart and need a managed clip library, QC playback, and scrubbing on set.
Manage LUTs and looks, or generate detailed deliverable and shooting-day reports.
Need a deep, end-to-end media pipeline with rich metadata and studio-grade reporting. That's exactly what Silverstack is built for.
Work in an LTO/LTFS archive workflow as part of the same tool.

The two aren't really competitors. Plenty of people who own Silverstack still reach for a fast, free offloader on smaller days. Copsy is built to be that tool, and to be the verified offloader for everyone who never needed the whole lab in the first place.

How Copsy offloads a card

Plug in the card. Copsy detects it by content and recognizes the camera or source automatically.
Pick destinations. An external drive, plus optionally Google Drive or Dropbox — copied in parallel.
Walk away. Copsy copies, organizes by date and source, and verifies every file with ASC-MHL checksums.
Get pinged. A Telegram message tells you it finished and verified, with nothing lost.

Frequently asked questions

Is there a free alternative to Pomfort Silverstack?

Yes, for the copy-and-verify core of an offload. Copsy is a free Mac app that copies footage from camera cards to an external drive and optionally Google Drive or Dropbox in parallel, and verifies every file with ASC-MHL checksums. It does not replace Silverstack's full DIT-lab feature set (clip library, QC, LUTs, deliverable reports), but it handles verified offload for free, where Silverstack runs roughly $300–$900 per year depending on tier.

What does Silverstack do that Copsy does not?

Silverstack is high-end DIT software with a deep clip library, quality-control playback and scrubbing, LUT and look management, metadata handling, and detailed deliverable reports for a full DIT cart. Copsy intentionally does none of that. Copsy focuses only on auto-detecting the card, copying it to a drive and the cloud, and verifying it with ASC-MHL — the offload step itself.

Does Copsy use ASC-MHL like Silverstack?

Yes. Copsy verifies every copied file with ASC-MHL checksums — the same film-set and Netflix-delivery verification standard that Silverstack and other professional tools use — so each file is confirmed copied bit-for-bit with nothing lost or corrupted.

Can Copsy copy to a drive and the cloud at the same time?

Yes. Copsy copies your footage to an external drive and to Google Drive or Dropbox in parallel during the same offload, so your local backup and your cloud copy happen together.

How much does Pomfort Silverstack cost?

As of June 2026, Silverstack is sold as a subscription, roughly $300–$900 per year depending on the tier (Silverstack XT versus Silverstack Lab), with shorter project licenses also available. Copsy is free. Always check Pomfort's site for current pricing, since it changes.

Is Copsy really free?

Yes, Copsy is free to download and use today, with no card limit and no account required. It runs on macOS 13 or later.

Offload your next card for free

Copsy — a free Mac camera-offload app. Verified copies to a drive and the cloud, nothing lost.

⬇ Download Copsy for Mac

macOS 13+ · No card, no signup, no limits