Cold approach at a bar
Noa is out with her friends and bored of pickup lines.
Start a natural conversation and earn three minutes of real talk.
Live voice AI · for iPhone
Your social gym, by voice
Kari is an AI charisma coach you practice with out loud. Real conversations with characters who talk back, and a report that tells you exactly what to improve — filler words counted, silences measured, no flattery.
There's a version of you the world hasn't seen yet. The one who says what they think. The one who speaks and gets listened to. The one who makes people laugh without trying.
It's already in you. Nobody trained it — that's all. Kari is the gym.
The training loop
Learn it. Live it. See it in numbers.
01
Learn the technique
A spoken lesson, not a video
Kari teaches you one concrete technique and you practice it out loud with her on the spot. One attempt, one correction quoting your literal words. When you nail it, the difficulty goes up.
02
Put it to the test
Real scenes with a character who talks back
You pick a roleplay, you speak, and the character reacts the way that person would: bored by canned lines, pushing back, giving in only to real technique. It's genuine exposure practice, without the social cost.
03
See what to fix
A report that measures behavior, not calm
When you finish, Kari shows you where you won and where it slipped, with evidence of what she heard: filler words, silences, sentence endings, follow-up questions. And the one thing to change next time.
The report
A coach who doesn't flatter you
Every session ends with evidence, not encouragement: your filler words counted one by one, your silences timed, your literal quotes analyzed. Four traits measured — Listening, Clarity, Confidence, Tone — and the one lever holding you back.
“You walked in nervous and walked out with her recommendation. That's craft.”
71ListeningTwo follow-up questions and a callback: you actually listened.
66ToneThe theater anecdote changed her face.
63ClarityOne idea per turn, though the second one ran long.
58ConfidenceOne permission-seeking “I guess”, but you held your point.
Filler words7 counted
Silences over 4s2 measured
Follow-up questions2 asked
Talk-time balance48 / 52
Why Kari is different
Not lessons about talking. Talking.
You train by speaking, out loud
No theory to read, no buttons to tap. Kari genuinely hears you through a live voice API and answers in the moment, like a real conversation.
Characters who don't make it easy
Every roleplay has a personality and a mission. They don't cave at the first try: they punish crutches and only give in to technique used well.
A report with evidence, not flattery
Filler words counted, silences measured, sentence endings, talk time. Kari tells you the truth with data, not a pat on the back.
Your charisma number
As you train, Kari calibrates a score from real evidence in your sessions — and points at your lever: the one thing holding you back most.
160+ scenes and 45 lessons
From a job interview to escaping the friendzone. Varied scenarios and characters, because variety retains more than repeating one scene until it feels comfortable.
Unfiltered, and private
Kari counts your filler words one by one — the thing nobody told you in years. You practice alone, whenever you want, with zero social cost for failing.
160+ roleplays
Every conversation you've been avoiding
Dating and flirting (46) · Work and career (27) · Persuasion and negotiation (30) · Everyday situations (36) · Relationships and family (21)
Ace the job interview
Elena from HR is friendly but hides trap questions.
Present your strengths with confidence, without sounding arrogant.
Cancel a subscription without being upsold
Iker from retention uses aggressive offers and emotional blackmail.
Stay firm until he confirms your cancellation is processed.
9 skills · 45 lessons
From small talk to negotiation
Each skill is five spoken lessons: one concrete technique, practiced out loud with Kari correcting your literal words, until the difficulty goes up.
Explore the 9 skillsBuilt on evidence
The science is unreasonably clear
d = −1.39 vs −1.41
Talking to an AI by voice matches real-life exposure.
A meta-analysis of 11 controlled studies (N=508) found simulated exposure for public-speaking fear practically identical to in-vivo exposure (d=−1.39 vs d=−1.41). Practicing out loud with a voice AI is a legitimate form of exposure.
Meta-analysis · 11 RCTs · N=508d = 0.87
Technique plus practice works — exposure alone doesn't build skill.
In a randomized trial (N=106, social anxiety), exposure plus skills training beat exposure alone on judge-rated skill (d=0.87), avoidance (d=0.61) and depression (d=0.79). That's why Kari pairs lessons with roleplays: neither leg is optional.
RCT · social anxiety · N=10640 → 71
Vocal charisma is trainable in hours, not years.
The “Pascal” system (N=72) produced a large improvement in prosodic charisma after 4 hours of feedback-driven practice (score 40 → 71, p<0.001). Acoustic signal alone predicts 66–75% of perceived charisma.
Pascal system · N=72 · p<0.001What changes
Weeks, not years
“I thought I was shy.”
Most people aren't shy — they have zero trained scenes. After a few weeks of spoken practice, meetings stop being ambushes: you've already had that conversation.
The filler-word mirror
Kari counts them one by one, session after session. First you're shocked. Then you hear them coming — and stop them mid-air.
No more disappearing in groups
Knowing what to say was never the problem; entering the conversation was. It's a trainable move, and there's a lesson — and a report metric — for it.
Questions
Fair questions
What exactly is Kari?
Kari is an iPhone app for training social skills and charisma by talking out loud with an AI coach. It combines spoken lessons (one concrete technique you practice on the spot) with roleplays (real scenes where a character talks back), and every session ends with a report that tells you exactly what to improve.
Does practicing with an AI actually work?
The evidence says yes. A meta-analysis of 11 studies found simulated exposure practically identical to real exposure for public-speaking fear (d=−1.39 vs −1.41), and feedback-driven vocal training improved perceived charisma within hours (Pascal system, N=72, p<0.001). Kari's whole design is built on primary studies and meta-analyses — see the Science page.
Do I have to speak out loud?
Yes — that's the point. Kari really listens: she hears your filler words, silences, pace and sentence endings. That feedback about how you sound is only possible speaking, not typing. You practice alone and in private, so there's no embarrassment in failing.
What can I practice?
Over 160 roleplays (dating, work, negotiation, neighbor conflicts, family) and 45 lessons across 9 skills: social confidence, public speaking, dating and attraction, leadership presence, conflict and boundaries, charisma, storytelling, persuasion, and negotiation.
Train the conversation before life throws it at you.
160+ scenes, 45 spoken lessons and a coach who tells you the truth. Five minutes a day.
Download Kari on the App Store