Two ways to pay. Same full product.

Both plans give you the exact same full product - AI Prints, auto-tagging, checklists, slicer integrations, collections, and sharing. The only difference is where your files live and what you pay. Maker ($10/month) includes 200 GB of fast, encrypted storage on our servers. Upload and go, nothing else to set up. Maker BYOS ($5/month) connects your own Dropbox. Your files stay in your Dropbox under your control, and you pay less because you're bringing the storage. No 200 GB ceiling, no overage from us - your limit is just your Dropbox plan. There's no "Pro" tier holding features hostage and no "talk to sales" mystery pricing. Pick based on whether you'd rather use our storage or your own.

Nothing bad. We don't lock your account or force you to upgrade. Storage above 200 GB is billed at $0.05/GB per month and added to your regular subscription invoice. So if you used 250 GB last month, that's an extra $2.50 on top of your subscription. No surprises, no separate billing, no upsell pop-ups. You'll get notifications at 80%, 95%, and 100% of your included storage so you can decide whether to clean up files, accept the overage, or keep growing. During beta, there's a hard cap at +1 TB overage to prevent runaway bills, after which uploads pause until you free up space or the cap is raised. If you have a one-time large drop and don't want overage to kick in, archiving older Prints into a downloaded backup is always an option. Your files are yours to manage however works best for you.

A few honest reasons. We don't show ads. We don't sell your data. We don't train AI on your library. We'd rather charge fairly than play games with the things that actually keep the lights on. A free tier always has a catch. Either it's funded by ads, by selling user data, by training models on your files, or by a paid tier so expensive it subsidizes everyone else. None of those felt right for a product built for hobbyists. Charging fairly lets us focus. We can keep shipping features, fixing rough edges, improving the AI, and giving you the experience you deserve, instead of chasing alternative revenue streams that work against you. Your subscription pays for actual development time, not someone else's marketing budget. The 10-day trial is enough time to upload a real chunk of your library, see the AI in action, and decide if it earns the subscription. If 10 days isn't enough, email us and we'll extend it.

When you connect Dropbox, you authorize STL Stash through the official Dropbox API. Here's exactly what that means: Read: We read the files and folders you grant access to so we can detect Prints, generate thumbnails, pull metadata, build your search index, and run AI organization. Write: When you upload or import files through STL Stash, we write them into your Dropbox on your behalf. Delete: We only delete a file when you explicitly delete it inside STL Stash. We never delete your Dropbox content automatically or in bulk. We don't keep a separate permanent copy of your files on our servers - they stay in your Dropbox. We never sell Dropbox data and never use it to train AI. Disconnect anytime from STL Stash or revoke access in your Dropbox settings, and your files stay exactly where they are. We're independent developers on the Dropbox API; Dropbox doesn't sponsor or endorse STL Stash.

Your library stays accessible for 14 days after cancellation. You can log in, browse, and export anything you want during that window. We treat cancellation as a pause, not an immediate goodbye, in case you change your mind or just need time to grab files. We'll send a reminder 24 hours before the deletion deadline so you have a clear chance to download whatever you still want. If you log back in and resubscribe before the 14 days are up, your library picks up exactly where you left off, with all your Prints, Collections, tags, notes, and checklists intact. After 14 days, your files and metadata are removed from our production systems. Any active shares of your Prints or Collections are revoked at the same time, so people you previously shared with will lose access. Backup copies cycle out of our systems within the standard backup rotation window after that. If you want to come back later, you're welcome to. Just create a new account and start fresh.

No. Your files exist in your library to be organized for you, not to feed a training pipeline. We do not use your STLs, your designs, your Patreon downloads, your reference images, your notes, or any other content you upload to train any AI model. Not ours, not any third party's. This is true today and it's the commitment we've made publicly in our Terms of Service and Privacy Policy. Here's what the AI in STL Stash actually does. When you upload files, the AI looks at filenames, file structure, file relationships, and basic metadata to figure out which files belong together as a Print. It groups your goblin's body, base, weapons, and presupports into a single record so you can find them later. That's the whole job. The AI returns a result to you, that result becomes part of your library, and the work is done. What it doesn't do is read your mesh data into a training set. It doesn't learn from your private library to improve a model that gets used by someone else. It doesn't use your work to power a generative tool that could replace the creators you've supported. The 3D printing community has watched generative AI scrape creators' work without permission, and we are not going to be part of that pattern. If we ever change our approach to AI features, including any future opt-in feature where users could choose to contribute their own corrections to improve the product, you'll hear about it loudly and in advance. Any change like that would require explicit consent from you, and you'd always have the option to decline without losing access to STL Stash.

No. Your library is private by default and stays that way unless you decide otherwise. There's no public profile, no gallery, no discover feed, no algorithm surfacing your Prints to other users. Nobody is browsing through your collection. Nobody is "following" you. Other STL Stash users can't see what you have, what you've tagged, or what you've printed. The only time anything you've stored becomes visible to someone else is when you explicitly create a share link for a specific Print or Collection and send it to a specific person. Even then, they only see what you shared, not your full library. Your stuff is your stuff. That's the whole model.

No. Ever. Your files work anywhere STL files work. Slicers, viewers, modeling software, other organization tools, your file system, everything. We don't convert your files into a proprietary format, lock them behind our app, or make them dependent on our service to function. They're the same standard STL or 3MF files you uploaded. STL Stash exists to organize and send them faster, not to trap them. Download any file at any time and it opens in OrcaSlicer, Bambu Studio, PrusaSlicer, Cura, or anywhere else exactly the way it would have if it had never touched our servers. If we ever shut down, get acquired, or change direction in a way you don't like, your files are still your files. That's a commitment, not a marketing line.