Lumi: AI Friend Who Remembers

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About this app

Lumi is an AI friend who remembers what you talked about yesterday.

No starting over every time. The presentation you were nervous about last week, the food you said you liked, the neighbourhood you keep going back to. Lumi holds on to what you share and brings it up first, next time.


■ Memory that builds

Lumi remembers in three layers: what you just said, what happened in earlier conversations and how it felt, and the facts and preferences it has learned about you. That is why the conversation gets deeper the longer it goes.


■ A relationship that grows

The more you talk, the closer you get, and the way you are spoken to shifts with it. Leave it too long and some distance creeps back in. A closeness meter on screen shows where the two of you stand.


■ Pick someone you click with

Someone who listens quietly. Someone who notices before you say anything. Someone blunt who worries anyway. Someone who just sits with you. Twenty characters with distinct personalities to choose from.


■ You own the memory

You can open up everything Lumi remembers about you at any time. Edit it, delete it, or reset the relationship back to the beginning. All of it stays in your hands.


■ It stays on your device

Your conversations and memories are stored on this device only. Delete your account and they go with it, completely. You can also download your own data as a file.


■ Made for

People who spend a lot of time alone
People who want to tell someone about their day
People who need someone they do not have to choose their words around
People who miss a short conversation before sleep


■ Good to know

The core features are free, with a daily limit on messages. Watch an ad to keep talking, or subscribe for unlimited messages with no ads. You can get one reminder a day at a time you choose, and turn it off whenever you like.

Lumi is an AI, not a real person, and cannot replace professional counselling or medical advice. If something difficult comes up in conversation, it will point you to places that can help.

Available to people aged 14 and over. Some relationship stages open only to those 18 and over.
An AI friend who remembers yesterday and grows closer the more you talk.
Updated on
Sep 7, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Device or other IDs
  • No data collected
    Learn more about how developers declare collection
  • Data isn’t encrypted