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Version 1.5.8

Stash is a diabetes supply inventory tracker built for people with Type 1 diabetes — whether you're managing with an insulin pump or multiple daily injections (MDI). This guide walks you through everything you need to know to get the most out of it.

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Welcome to Stash, the supply tracking app built for people managing diabetes. This guide will get you up and running in just a few minutes.

First Launch

When you first open Stash, you'll see a welcome screen. Tap Get Started to land on the main dashboard. Before you start logging inventory, take a quick detour to Settings (gear icon in top left) to tell Stash about your setup:

1. Delivery system — Do you use a pump or pens (MDI)? If you're on a pump, select your manufacturer (Omnipod, Tandem, Medtronic, twiist, or iLet) so Stash shows the right supply categories.
2. CGM — Toggle on CGM tracking and pick your manufacturer (Dexcom, Libre, Medtronic, or Eversense). Stash will auto-configure sensor duration, but there are a few extra options as well.
3. Daily usage — Enter your daily basal and bolus units (or total daily dose for pump users). This powers days-remaining estimates, low stock alerts, and trip planning calculations.
4. Sharps — If you use pen needles, syringes, or lancets, toggle sharps tracking on and set how many you use per day.

You can always adjust these later — Stash recalculates everything in real time.

Adding Supplies to Your Stash

There are two ways to log your inventory: scanning and manual entry. Scanning is faster and more accurate, and we strongly recommend it.

Scanning — The Best Way In

Tap the scanner icon on the dashboard to open the camera. You'll see two modes at the bottom: Scan In (add to inventory) and Scan Out (use from inventory). Start with Scan In.

Point your camera at a barcode on your supply packaging. Stash supports a wide range of barcode types, but Data Matrix codes are by far the best way to log supplies.

Data Matrix codes should be present on most:

• Vials of insulin
• Sensors
• Pods
• Test strip vials

For items without Data Matrix codes, Stash should still recognize the GS1 information from a 2D barcode, such as on individual pens. It is still advised to check that the correct category is selected. You will also need to manually enter expiration dates for insulin and sensors if manually entered.

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Tip: When receiving a box of insulin pens, scan the Data Matrix code on the box and set the Quantity to 5. This will add the Expiration, Lot, and SN from the box to these 5 pens. When deducting an item, you will only need to select the appropriate Expiration group.

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Why Data Matrix Codes?

Most diabetes supply packaging includes a small square Data Matrix code (it looks like a blocky QR code, usually near the label). These codes follow the GS1 standard used across pharmaceutical and medical device packaging, and they encode significantly more information than a standard barcode:

• GTIN — a universal product identifier that tells Stash exactly what the product is
• Lot number — captured automatically for recall tracking and record keeping
• Expiration date — pulled directly from the code, so you never have to enter it manually
• Serial number — a unique identifier for that specific item, enabling duplicate detection