Stacks
Add a voice message to a gift. Put a recipe link where you cook. Stacks connects messages and useful links to everyday objects with compatible NFC tags.
Physical tagging requires a compatible NFC tag. You can also create and share messages digitally. What you’ll need
Choose what you want an object to open.
Record a voice message, add a photo or video, and write the Stacks Message to a compatible tag. Attach it to a gift, card, or photo frame.
A birthday wish on a present. The story behind a favorite photo.
See how to add a messageWrite a recipe, website, or another supported destination to a tag. Place it where you’ll want to open it, so the next step is close at hand.
A recipe on its stand. A how-to link beside the thing you use.
See an everyday exampleStart with a message or link and a compatible NFC tag.
Create a Stacks Message with your voice, photos, video, or words. For a useful link, choose a destination in NFC Utilities.
Follow the app’s write instructions and hold the tag near the top of your iPhone. Wait for the write to finish.
Attach the tag to your object. Bring a supported phone close, follow any prompt, and check that the right message or link opens.
Some destinations require Stacks or an additional confirmation. Test the recipient experience before giving a tag to someone else.
Your favorite recipe already has a place in your kitchen. Give its link one, too.
Use NFC Utilities to write the recipe URL to a compatible tag, then place it on your recipe stand. Bring your phone close and follow the prompt to open the page.
Try it with StacksUse a supported iPhone to write your tag in Stacks. Pick a compatible, writable NFC sticker or card and check the requirements for your chosen action.
Compatibility questionsUse NTAG215 for Stacks Message tags and protected writes. Standard unprotected link writes can also use supported writable NDEF tags, including NTAG213 and NTAG216. Check the chip type before you buy.
You can source compatible blank tags from an NFC tag supplier. Stacks also has a tag launch preorder; read its availability and fulfillment details before ordering.
The stickers pictured here are generic illustrations. NFC tags are separate physical items; downloading the app does not include one.
Bring your message together, get a little creative help, and choose how it reaches someone. No NFC tag needed to share digitally.
Build a message from a single voice note or bring your favorite media together in one Stack.
Turn an idea into an image, reimagine a photo, or animate it into a short video. Add your creation to a Stack and make your message your own.
Send a Stacks message link through Messages, or use the iPhone share sheet to pass it to someone nearby with AirDrop.
Choose browser sharing for a web viewing link, or share a receive link or access code so someone can receive the message in Stacks.
Share messages with friends or groups in Stacks. Choose the recipients and review the sharing settings for your message.
Write a message or useful destination to a compatible NFC tag. Scan, protect, batch write, and reuse supported editable tags.
Some AI tools require Pro or AI credits. Viewing options and access limits depend on the message and sharing method.
NFC lets a supported phone read a nearby tag. With Stacks, that tag can point to a message or a useful digital destination. Bring the phone close to the tag and follow any on-screen prompt.
The iPhone app requires iOS 18 or later. Writing and reading tags also require NFC-capable hardware. Some actions have additional requirements: the native timer and alarm utilities require iOS 26 or later. Check the app’s guidance for the action you choose.
It depends on the destination. A standard website link can open in the phone’s browser. Stacks Messages use the available app or browser viewing flow and its access settings; browser access can have limits. Certain utilities, including timer, alarm, and Wi-Fi sharing, require Stacks on the phone that scans the tag. Test the exact flow before sharing.
Yes. You can create and share Stacks Messages digitally. A compatible physical tag is only needed when you want to connect a message or useful destination to an object.
Stacks is free to start. Free NFC writing has a monthly limit; some utilities require Pro. Optional storage subscriptions and AI credits are also available. Check the app for current limits and prices. Physical tags are obtained separately.
That depends on the destination and sharing settings. Someone with physical access to a tag may be able to open its link or attempt to view its message. Review message access controls before sharing, and avoid putting sensitive information on publicly accessible tags. Stacks Messages have access controls; an ordinary website link follows that website’s rules.
Supported editable tags can be erased and written again. A protected tag may need to be unlocked by its owner first. Check the tag’s status in NFC Utilities before attempting to change it.
Need help choosing a tag or setting up your first one? Contact Stacks support.
A message for someone. A useful link for you.
Give an everyday thing a digital side.
Free to start. Compatible NFC tag required for physical tagging.