For a while, Stack by Google was the best-kept secret in document management. Take a photo of a bill, a receipt, or a letter, and the app would read it, tag it, and make it searchable — all backed by Google's machine learning. Reviewers loved it. Its rating sat around 4.6–4.7 stars. And then, in September 2024, Google turned it off.
No dramatic announcement, no public postmortem — just a shutdown notice and a window to export your data before the app stopped working. If you were one of its users, you've probably been using a worse substitute ever since: a folder of loose PDFs, a scanning app that doesn't understand deadlines, or just a pile of paper that's crept back onto the kitchen table.
What Stack actually was
Stack launched out of Area 120, Google's in-house incubator for experimental products. The pitch was simple and genuinely useful: point your phone at a document, and the app would use OCR and on-device machine learning to classify it, extract key details, and make everything text-searchable later. No manual filing, no typing in metadata by hand.
For the people who found it, Stack solved a real problem — the same problem most households and freelancers still have: paperwork accumulates faster than anyone wants to process it, and the effort of digitizing it "properly" is usually higher than the effort of just leaving it in a pile.
Why Google shut it down
Google has never published a detailed reason, but the pattern is a familiar one for anyone who has followed Area 120's history. Experimental products from that incubator are built to test an idea, not to become permanent parts of Google's product lineup. When a project doesn't graduate into a core product — Workspace, Drive, Photos — it tends to get quietly wound down, regardless of how well-loved it was by the people actually using it.
That's the uncomfortable truth for anyone building a life around a free tool from a large company: usefulness to you and strategic priority for them are two completely different questions. Stack scored well on the first and, apparently, not well enough on the second.
The problem was never that Stack's idea was bad. The problem is that "a great tool" and "a tool Google keeps funding" aren't the same test.
What former Stack users actually need
Talk to anyone who misses Stack and the same handful of things come up, in roughly this order:
- Photograph it and forget the filing. Automatic classification (letter vs. invoice vs. receipt) so you don't have to sort things by hand.
- Find it later by content, not filename. OCR-backed full-text search — typing "deposit" and getting the lease agreement, even though the file is named
scan_0042.jpg. - Get reminded before it's too late. Stack never really solved deadlines. Bills and cancellation windows still lived in people's heads.
- Not get orphaned again. This is the part Stack's shutdown taught everyone the hard way: if your documents live inside one company's closed app, you're one product decision away from a scramble to export everything.
The part most "alternatives" get wrong
Since Stack's shutdown, a handful of scanning apps have tried to fill the gap — Adobe Scan, Genius Scan, and others. Most of them solve the scanning part reasonably well. Almost none of them solve the storage part honestly: your documents end up on their servers, in their proprietary format, behind their subscription. You've swapped one company that could shut you out for another.
That's the structural issue we built Briefpfleger to avoid. Briefpfleger doesn't have a database or a document server at all — the app runs in your browser and talks directly to your own Google Drive. Your files are saved as ordinary PDFs and images in ordinary Drive folders. If Briefpfleger disappeared tomorrow, your documents wouldn't — they'd just be sitting in your Drive exactly like they are today, openable with anything.
What that looks like in practice
Take a photo of a letter or invoice (up to 10 at once). Briefpfleger's OCR reads it, classifies it automatically as a letter, invoice, receipt, or plain photo, and suggests where to file it based on how you've filed similar senders before. Add a due date, and your Google Calendar takes over: an email 24 hours before, one hour before, and again at the deadline — plus a follow-up the next day if you never marked it done.
For contracts, you set the cancellation notice period once (1, 3, or 6 months), and the alarm fires well ahead of the actual cutoff — with a direct link back to the contract.
Beyond scanning: the deadline problem Stack never touched
The single biggest gap Stack left wasn't scanning quality — it was follow-through. A photographed receipt is only half the job; the other half is remembering that the gym membership auto-renews in six weeks, or that the invoice is due Friday. That's arguably the more valuable half, and it's the one built around Google Calendar rather than a notification system you have to trust a startup to keep running.
Should you actually migrate?
If you're still sitting on a Stack export — a folder of orphaned PDFs and images with no structure — here's the honest version of what re-organizing them looks like with a Drive-native tool: upload your old export in batches, let OCR re-index everything for search, and set up drawers (Home, Taxes, Insurance, Kids) once. From there, new documents take seconds each, because the classification and filing suggestions do most of the work.
It's not going to be Stack again — no product will be exactly Stack again. But the actual jobs Stack was doing for you — scan it, classify it, find it later, get reminded — are very much still solvable. Just this time, in a place a shutdown notice can't take away from you.
Try Briefpfleger free
Up to 10 documents at no cost, stored entirely in your own Google Drive. No new account, no export drama if you ever stop using it.
Try Briefpfleger free