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Khai Huynh · Growth & AI consultant

I help
grow apps & build with AI.

  • Growth for mobile apps.
  • AI setup for local businesses.
  • Practical AI training for teams.
Book a free call See how I help
users grown
5M+
revenue
$40M+
ARR, solo-built
$100K
More results: SEA market expansion; −40% churn; +30% activation; 2.1x ROAS; +45% online sales
Grown with
  • McKinsey & Company
  • Sipher
  • Promer AI
  • Project SEED
  • Ancient8
  • Menlo AI
  • Delysium
  • The Scourge
  • Firegroup
  • Nakame

How I can help

Four ways to work together.

01For mobile apps, pre-launch or live

Growth SprintPre-launch: market research, positioning, a growth model and a launch plan. Live: tracking check, store/onboarding/paywall audit, and 3–5 tests. You keep every doc.

I research your market, audit your product and funnel, and hand you a growth plan with the first tests running.

  • 7–10 days
  • Fixed scope
Book a free call Or leave your details →
  1. Market researchCompetitors, audience and what they pay for — or, for live apps, a check that your tracking and revenue data agree.Day 1 to 2
  2. Product auditStore page, onboarding, paywall and the core loop, screen by screen.Day 3 to 5
  3. Growth modelWhere users come from, what they’re worth, and which channels to bet on.Day 6 to 7
  4. Launch tests3–5 experiments or launch steps live, each with a clear success metric.Day 8 to 10

02For mobile apps, pre-launch to scale

Part-time Growth LeadPre-launch: market research, positioning, growth model and launch plan. After launch: weekly tests, ads, onboarding and paywall work, lifecycle and reporting.

I join your team a few hours a week to plan, launch and grow your app.

  • 5–10 hrs / week
  • Monthly
Book a free call Or leave your details →

ExampleYour funnel, week 1 → week 12

  1. Store visits100%
  2. Installs28%41%
  3. Trials9%16%
  4. Paid2.4%5.1%

03For local service businesses

AI AutomationBuilt on the phone line, calendar and CRM you already use. Start with a free check: I contact your business like a customer and show you where leads slip.

AI that captures every lead, follows up in seconds, books the job and keeps your CRM up to date.

  • HVAC
  • Dental
  • Roofing
  • Medspa
  • Restaurants
Get a free lead check Or leave your details →
  1. Lead capture
  2. Content system
  3. CRM update
  4. Instant follow-up
  5. Booking
  6. Reporting

04For marketers, ops & growth people

Practical AI TrainingMade for mid-career people. You work on your own real tasks, not demos, and leave with before/after workflows you can copy on Monday.

Put AI to work in the job you already have, with a playbook for your role.

  • Half day
  • Teams up to 15
  • No coding
Ask about training Or leave your details →

ExampleCampaign brief + 10 ad variations

Before4 hrsResearch, brief and every variation by hand
With AI45 minAI drafts the research and variations; you edit and choose

How it starts

Three steps. No pitch deck.

  1. Free call

    20 minutes. Tell me what’s stuck.

  2. Clear plan

    Scope and price, in writing.

  3. Start

    On a date you pick.

About

Hi, I’m Khai.

10+ years in Growth and GTM. Ex-McKinsey and VC-backed founder. Now solo building apps and sharing what I learn.

  1. 2025 — nowPromer AI · FiregroupHead of Growth Marketing$1.1M new revenue, −40% churn, +30% activation
  2. 2025 — nowIndie apps · RepTimeSolo builderAI consumer apps to $100K ARR. Now building RepTime.
  3. 2023 — nowIndependentProduct & Growth AdvisorThe Scourge: $1M+ sales · Delysium: 47K concurrent users
  4. 2024 — 2025NakameFounderAI companion app, 20K users, 15M organic views
  5. 2021 — 2023SipherHead of Marketing~1M players, 2.1x ROAS on ~$150K/mo ads
  6. 2018 — 2019McKinsey & CompanyAssociate ConsultantRetail clients: online sales +45%, LTV +20%
  7. 2016 — 2020BetterUFounder & MD0 → 5 stores in 14 months, 35+ people

Notes

Free AI and growth tips.

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Tell me where I could deliver instant impact.

What do you need?

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Questions

Before you book.

How much does it cost?

It depends on the scope. After a free 20-min call, you get a fixed price in writing.

My app isn’t live yet. Can you help?

Yes. Before launch I cover market research, product audit, positioning and a growth model, so you launch with a plan instead of a guess.

What do you need from us?

Read access to your analytics, app store console and ad accounts, plus one contact person. Most of the work is async.

Who is the AI training for?

Mid-career marketers, ops and growth people. No coding. You learn on your own tasks, with a playbook for your role.

I run a local business. Do I need to be technical?

No. I connect the tools you already use, train your team, and keep an eye on it.

Where are you based?

Ho Chi Minh City (GMT+7). I work with teams in the US, Europe and Asia, and book calls at a time that suits you.

Let’s talk.

20 minutes, free. Tell me what’s stuck.

Book a free call
Book a free call