You have a thing. A knitting pattern collection. A course you've taught fifty times. A guided journal you've been selling as a PDF. Something you already make money from, or want to.
Here's the shift: with Envelope, each thing you sell isn't a download. It's its own app. Your pattern is an app. Your worksheet is an app. Your course module is an app. The link to that app is the product.
This guide walks through making your first one, step by step. No code. No app store. Just you, one piece of your work, and Envelope.
Step 1: Pick one thing to ship first
Don't try to put your whole catalog into one app. Pick the single product you'd most want a customer to keep on their phone. The cozy cardigan pattern. The first lesson of your course. The morning journal worksheet.
That one thing is your first app. Once you've built it, the next ones are faster because you'll know the shape.
Step 2: Gather what that one thing needs
Open a folder on your computer and pull together everything that makes up the product. For one pattern, that might be:
- The pattern itself (the instructions, in whatever form you have them)
- A cover photo
- A list of materials and difficulty
- Any extra notes you'd give a paying customer
For one lesson, that might be:
- A video file or link
- A worksheet or transcript
- A short description of what the student will learn
For one journal worksheet, that might be:
- The prompts
- Any inspiration images
- Whatever explanation you'd put in the intro
If it lives in Google Drive, Notion, or your email, pull it together first. You'll work faster if you can see it all in one place.
Step 3: Get your content in shape
Envelope works with the file types you already use:
Photos: Any image from your phone or computer works. iPhone photos and screenshots both upload fine.
Audio and video: MP3 files and most other common audio formats. For longer videos, host them on Vimeo or YouTube and link to them from your app.
Words: Just paste them in. Your pattern instructions, your lesson script, your worksheet prompts.
A list of things (steps, materials, items): A Google Sheet works perfectly. One row per item, one column per detail.
For a single product, you're rarely uploading much. Most creator apps are a few photos, some text, maybe one PDF or video.
Step 4: Describe your app to Envelope
Open Envelope and write a prompt. The recipe is:
- What it is. "An app for my Cozy Cardigan knitting pattern."
- What people see. "The pattern broken into clear steps, with photos for each tricky section, and a checklist so they can mark progress."
- What they do. "Tap through the steps as they knit. Check things off. Save their notes."
That's enough to start. Envelope builds a working version in a minute or two. You'll see it live, on screen, with example placeholder content.
Notice the difference from a PDF: the app can do things a PDF can't. Check off rows. Save notes. Remember where you left off. That's what makes it worth more than the download.
Step 5: Drop in your real content
Once the structure is there, swap the placeholders for yours. Upload the cover photo. Paste in your instructions. Add the photos for each step.
If something looks wrong, just tell Envelope what you want instead. "Make the photos bigger." "Move the materials list to the top." "Use yellow accents instead of orange."
You're not editing code. You're describing what you want.
Step 6: Brand it
Add your name (or your shop's name) and your icon. Envelope can make an app icon from any image you upload, or you can describe one in plain English ("a small orange yarn ball with a knitting needle through it") and it'll generate one for you.
This is the part that makes the app feel like yours.
Step 7: The link is the product
When you publish, you get a URL like envelope.build/cozy-cardigan. That URL is what you sell.
Paste it into your Etsy listing as the delivery message. Put it in your Gumroad file. Add it to the follow-up email your checkout sends. Whatever you use to take payment, the buyer ends up with that link. They tap it on their phone, add it to their home screen, and your work lives there next to Instagram and their bank.
You don't have to ask them to download anything. You don't have to wait for App Store review. The link works the moment you publish, and they keep the app forever.
What about my whole catalog?
You build one app per product. The first one takes an afternoon. The next ones go faster because you'll know the shape and what to ask the builder for.
If you have fifty patterns, you're not stuck building fifty apps in one sitting. Most creators start by turning their best-selling product into an app, then add the next one when they're ready.
What you don't have to think about
- Updates. Find a typo? Fix it in Envelope and everyone with the app gets the update the next time they open it.
- iPhone vs Android. It works on both. Same link.
- Hosting and tech setup. Envelope handles it.
- Login screens, saving notes, sending notifications. All built in. Turn them on when you want them.
When you're ready
Start building your first app. Pick your best-selling thing. Make it an app. See what your customers do with it.