Artwork approval that stays connected to the order.
Upload proofs, collect feedback, lock the approved version, and give production the file they can trust.
↘99AppStudio builds focused Shopify apps that turn messy operational steps into clear, reliable workflows—starting with artwork approval for custom products.

We build purpose-made tools for merchants who need fewer workarounds, clearer handoffs, and more confidence in every order.
Upload proofs, collect feedback, lock the approved version, and give production the file they can trust.
↘99AppStudio is building a portfolio around the real operational gaps merchants face every day.
A repeatable approval process for embroidery, engraving, printing, signage, personalized gifts, and other made-to-order products.
Start the proof request from the Shopify order and keep every item tied to its source.
Add the first proof, notes, and subsequent versions without losing context.
Customers approve or request changes from a secure, mobile-friendly link.
Lock the approved version and generate a clear, printable work order.

The customer sees the artwork, product, version, and two clear choices. Your team gets a durable record of what was approved and when.
ProofLock replaces scattered messages and ambiguous files with a workflow your sales, artwork, and production teams can follow.
Artwork requests, products, quantities, and customer details stay connected to the Shopify order.
Keep each revision in sequence so the team always knows which file the customer reviewed.
Send and safely resend branded approval links with reminders for outstanding decisions.
Collect actionable customer feedback beside the exact artwork version it refers to.
Prevent accidental edits after release and keep the approved asset as the source of truth.
Give production a focused summary with item, approval status, file, notes, and timing.
ProofLock gives sales, artwork, customers, and production one shared path from the first proof to the final approved file.
“We can see the current proof, the customer decision, and the production-ready file without searching through email threads.”
Emma C. · Custom embroidery store
“Customers know exactly what they are approving, and our team knows exactly which version should go to production.”
Lucas B. · Personalized products merchant
“The activity history gives sales and production one shared record instead of competing screenshots and attachments.”
Sarah M. · Print and signage business
Every plan includes the complete approval workflow. Shopify handles subscription approval and billing. No usage overage charges.
14-day free trial
14-day free trial
14-day free trial
One order uses one slot when its first approval email is prepared. Revisions, reminders, resends, and multiple items in that order do not use additional slots. Unused slots do not roll over.
ProofLock is designed to use the customer and order data required for the approval workflow and to protect access throughout its lifecycle.
Signed, expiring links can be rotated when a new approval is sent.
Uploads, sends, approvals, requests, and releases are recorded.
Shopify compliance requests and administrative exports are supported.
Uninstall handling removes sessions, stops reminders, and invalidates public links.
Artwork proofing lets a merchant send a design linked to a Shopify order so the customer can approve it or request changes before production. It is especially useful for embroidered, engraved, printed, and personalized products.
ProofLock connects an order to its artwork versions, sends the customer a secure approval link, records their decision, and prepares the approved file for production.
Yes. The approval page gives customers clear options to approve or describe what needs to change. Your team can upload a new version and resend the link.
ProofLock supports JPG, JPEG, PNG, WebP, and PDF files up to 20 MB.
No. One order reserves one slot. Its additional items, versions, reminders, and resends do not consume extra slots.
Plan selection, approval, and recurring billing are handled directly by Shopify. All three plans include a 14-day free trial.
No storefront theme change is required for the core merchant and customer approval workflow.
Yes. ProofLock has been approved by Shopify. The public listing link will be added to this page as soon as it is available.
ProofLock has been approved by Shopify. Request the installation link or tell us about the workflow bottleneck your store needs solved next.