Quick check-ins
Members can quickly signal that they are okay by tapping the hand button, choosing a Knuffling, and selecting how they feel.
Knuff
Knuff is a family and social check-in app for sharing quick updates with people in private Bubbles. It helps families, friends, and small groups see how members are doing without requiring routine calls or continuous location tracking.
Private check-ins for staying connected
Knuff is a check-in and communication app for families, friends, neighbors, and other small groups. Members of a private Bubble can quickly show how they are doing, while the Bubble view indicates how recent each person's check-in is. The central purpose is to provide reassurance without requiring a phone call or a long status message every time.
A check-in starts with the hand button in a Bubble or Knuff Chat. Users choose a Knuffling and indicate how they feel, then can add text, media, a voice message, a poll, or their current location. Knuff is designed for voluntary updates rather than continuous location tracking, and it can be used alongside existing messengers. Core functions are free, while optional extras and fixed-term Passes are sold separately without automatic subscription renewal.
Features
Bubble check-in view
A Bubble map shows how recent members' check-ins are: recent check-ins remain in the green area, while older ones move toward the center and red area.
Optional updates and media
Check-ins can be expanded with a personal message, photo, video, voice message, group poll, or current location when that context is useful.
Separate private Bubbles
Create separate Bubbles for family, friends, neighbors, colleagues, football teams, roommates, or school friends, with visibility limited to each Bubble's members.
Chat and follow-up requests
Members can use Knuff Chat for communication, and the site describes gentle nudges and call-back requests for reconnecting when a conversation is needed.
Alternative check-in methods
The site describes optional connected buttons and motion sensors that can send a check-in when using a phone is difficult, including in some senior-care situations.
Use cases
Independent seniors
A person living alone can send a daily sign of life without a call or continuous monitoring. The site also describes reminders, gentle nudges, and optional connected buttons or motion sensors for situations where phone use is difficult.
Family coordination
Family members can use a shared Bubble to answer the basic question of whether everyone is okay, then use chat, a call-back request, or a longer conversation when needed.
Children gaining independence
A child or teenager can check in after arriving at school, walking home, cycling locally, or visiting a friend. They can choose whether to include their location instead of being tracked continuously.
Long-distance relationships
People who live or work apart can share a brief update, photo, video, or voice message without turning every status check into a phone call.
Small groups and communities
Separate Bubbles can support groups such as roommates, school friends, colleagues, or football teams, keeping updates organized by context.
Pros and Cons
Pros
- Quick check-ins reduce the need for routine calls or status messages.
- Separate Bubbles limit check-in visibility to the relevant group.
- Location sharing is optional, supporting check-ins without continuous background tracking.
- Check-ins can include text, photos, video, voice messages, polls, and a location when more context is needed.
- The core functions are free, and the site says paid Passes do not renew automatically.
Cons
- The service is built around voluntary check-ins, so reassurance depends on members using the app or an available alternative check-in method.
- Some designs, features, and other extras are purchased separately; the supplied site content does not specify prices or limits.
- The iPhone and iPad requirement is iOS 16 or later; Android support is described for smartphones, without further device requirements in the source.
FAQ
What is Knuff?
Knuff is a check-in and communication app in which people in the same Bubble can indicate how they are doing. It is intended to complement, rather than necessarily replace, messaging apps such as WhatsApp or iMessage.
How does a check-in work?
A member taps the hand button in a Bubble or Knuff Chat, chooses a Knuffling, and can indicate how they feel. The check-in can also include a message, photo or video, voice message, group poll, or current location.
Which devices support Knuff?
Knuff is available for iPhone and iPad running iOS 16 or later, as well as Android smartphones. The site also links to the App Store and Google Play.
Is Knuff free, and does it use subscriptions?
The core functions are free for users. Additional items such as Knufflings, Bubble designs, and some features can be purchased in the Knuff Shop. The service says it does not use subscriptions; Passes have a fixed validity period and do not renew automatically.
Does Knuff continuously track a person's location?
No. Check-ins are visible only to members of the Bubble in which they were created. Knuff supports voluntary location sharing, but the safety use case specifically describes checking in without continuous background tracking.
Quick Facts
- Category
- Family and social check-in app
- Platforms
- iPhone and iPad with iOS 16 or later; Android smartphones
- Primary users
- Families, friends, neighbors, colleagues, teams, roommates, and school friends
- Core workflow
- Tap the hand button, choose a Knuffling, indicate how you feel, and check in
- Privacy model
- Check-ins are limited to members of the Bubble where they were created
- Pricing model
- Core functions are free; optional extras and fixed-term Passes are available, with no subscriptions
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