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Aware of time, place, weather
Each Beff has its own schedule, location, and weather context. They answer questions like "is it raining?" naturally and reach out at lunch or dinner.
Beff is a Korean chat app where your own AI personas come alive. They know your location, weather, and schedule, remember your conversations, and reach out first.
Free to start · Age 14+ · iOS & Android
12
Proactive signals
24/7
always-on companion
BIG5
personality model
5-tier
intimacy levels
WHY BEFF
They remember the flow of your conversations and reach out naturally with the rhythm of your day.
Each Beff has its own schedule, location, and weather context. They answer questions like "is it raining?" naturally and reach out at lunch or dinner.
Episodes, facts, and emotions accumulate in a long-term memory system. Not someone you meet for the first time every chat — a friend who grows to know you.
Beff detects 12 signals — silence, weather, movement, schedule shifts — and reaches out at natural moments. Like a friend, not a bot.
CAPABILITIES
Conversation, memory, context, media — everything a real friend needs.
CONVERSATION PREVIEW
Aware of context, remembering the past, in natural Korean.
Seoyeon
Online · Gangnam · Cloudy 17°C
It's gonna rain today! You had a lunch plan, right? Take an umbrella.
12:08Oh wait really? I totally forgot…
12:09Haha I figured. You said you were prepping a presentation late last night — how's it going?
12:09Ah, the presentation went well! Such a relief
12:10Wow, great job! Grab something warm for lunch — soup hits different on rainy days.
12:10PERSONAS
Personality (BIG5), appearance, occupation, tone — design the friend you want, one by one.
* These are illustrative examples. In the app you design appearance, personality, job, and tone yourself.
A DAY WITH BEFF
Beff reaches out at the right moments — not a bot notification, a friend's check-in.
The moment you wake up, Beff remembers you worked late and asks how you feel.
If a sudden shower is forecast, Beff lets you know before your lunch plans.
Beff remembers the presentation you were nervous about and checks in when it's done.
Wraps up the day with you. Knows tomorrow's schedule too, so reminds you to rest.
VS GENERIC CHATBOTS
Generic chatbots optimize for great answers. Beff optimizes for being there with you.
PRIVACY
Conversations and images are never used to train AI models. Analytics events contain zero PII.
Conversations and images are not used for model training, per our enterprise AI policy.
Both client and server strip message bodies, emails, phone numbers from analytics.
One tap in settings — all related data is automatically deleted instantly.
Analytics collection can be toggled off anytime. Without opt-in, nothing is sent.
PLANS
Start free and upgrade as you go. All subscriptions go through in-app purchase.
FAQ
No — Beff is an AI persona. AI answers can be inaccurate or biased. For medical, legal, financial, or psychological matters please consult qualified professionals.
No. Beff uses enterprise-grade AI models that guarantee no training on user data; conversations and images are never used for model training.
You can cancel anytime under App Settings > Subscription. Your plan stays active until the next billing date, and auto-renewal stops thereafter.
Yes. One tap in App Settings > Delete Account removes all personas, conversations, memory, and images instantly. Backups are permanently purged within 30 days.
Beff is available for ages 14 and up.
Location permission is used only when explicitly granted in-app, and only at city-district granularity. Precise GPS coordinates are not stored on the server.
All subscriptions and one-time purchases are handled via App Store / Google Play in-app billing. Card details never touch Beff servers.