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Grobunchy

Your Growth Engineer

Stop guessing what makes you grow.

Your Growth Engineer learns what moves your audience, then designs experiments that can prove it.

It reads your channel, works only from your own history, and hands you tests you can measure. It never posts for you and it never writes your captions.

  • YouTube available
  • TikTok beta
  • Instagram beta
  • Facebook planned

Growth Engineer

Demo data

Analyzing @creator...

  • Pulling 90 days of channel history
  • Normalizing retention against your own baseline
  • Extracting hooks, topics and formats
  • Scoring candidate patterns for evidence

Patterns appear here once evidence clears the bar

Your analytics tell you what happened.
We help you decide what to test next.

  1. 01

    Platform analytics

    what happened

  2. 02

    Growth Engine

    studies your history

  3. 03

    Evidence

    n, window, confidence

  4. 04

    Hypothesis

    a testable claim

  5. 05

    Experiment

    measured vs baseline

Dashboards stop at observation. Grobunchy keeps going: it separates correlation from cause, states a hypothesis, and measures the result against your own baseline, so the next post is a decision, not a guess.

How it works

A loop, not a feed.

  1. 01

    Connect

    Connect your creator account.

    Read-only analytics access. No posting rights, ever.

  2. 02

    Learn

    The Growth Engineer studies content and historical performance.

    Baselines per format, retention curves, hooks, topics, conversion.

  3. 03

    Experiment

    Patterns become measurable experiments.

    Control, intervention, target metric, guardrails, window.

  4. 04

    Adapt

    Every result updates your Creator Growth Model.

    Supported, rejected or inconclusive: the model learns either way.

Creator Growth Model

A model of your audience, learning with every post.

Not a generic playbook. Eight dimensions, each filled only with facts that clear an evidence bar, each one confirmed, weakened or contradicted as new results land. A language model reads your captions and names the hooks and topics; the numbers underneath are computed, never generated.

  • Confirmed

    Question-led hooks hold viewers past 30s more often than statement hooks.

  • New

    Workflow breakdowns are accelerating with returning viewers.

  • Weakening

    Sunday uploads no longer outperform weekday uploads.

Demo facts

Growth Model learning

Demo data

Experiments

Every pattern becomes a test with a control.

A hypothesis is only a hunch until it is measured against your own baseline. Experiments make the Growth Engineer accountable.

Experiment

EXP-014Demo data
Running

Hypothesis Opening with a stated opinion in the first 8 seconds raises subscriber conversion versus the tutorial-style cold open.

Control baseline

4.2 subs / 1k views (n=41)

Target

>= 4.8 subs / 1k views

Current

5.1 subs / 1k views (n=6)

Measurement windowDay 12 of 21
Experiment-backed n=6 vs 41, 12 days low confidence

Confidence stays low until the sample is large enough. The card will not call a winner early.

The answer most tools will not give you

Demo data

EXP-014 measurement window closed, day 21 of 21

Inconclusive.

Twenty three videos in, opinion-led openings still cannot be separated from the control. The difference sits inside the spread of this creator's own baseline, so there is nothing here to act on yet.

Control
4.2 subs / 1k views
Treatment
4.4 subs / 1k views
Sample
n=23 vs 41

On day twelve this same experiment read 5.1 and looked like a win. Six videos is not a sample, so the card refused to call it. A tool that celebrates early would have told you to change how you open every video, on evidence that evaporated.

Your Growth Model records that too. A finding of "we still cannot tell" keeps the question open and keeps the claim out of your model, rather than quietly becoming advice.

A pattern is not a finding until an experiment says so.

Which is why your Growth Model will sometimes tell you it does not have enough evidence yet. A tool that always agrees with you is a tool you cannot learn anything from.

Pre-publish

Spot weak signals before you post.

Paste a draft, a script or a title. The Growth Engineer compares it with your own history, not a generic rulebook, and flags where it drifts from what has worked for you. It suggests. You decide.

Draft "Why I stopped batching content"

Demo data
  • above your historyHookOpens with a question, your strongest hook type over 90 days.
  • in line with your historyAudience fitTopic matches what your returning viewers watch most.
  • below your historyPacingFirst cut lands at 0:19; your retention usually breaks around 0:14.
  • in line with your historyClarityOne promise, stated once. In line with your better performers.
  • below your historyNoveltyThird video on this angle in a month; earlier ones fell below baseline.

Relative to your last 90 days. This is a read on risk, not a forecast of views.

Growth Missions

Give your Growth Engineer a goal.

Set an objective. The engineer picks the experiments most likely to move it, runs them in order, and reports what it learned, including when the answer is 'not this'. Progress is measured, never promised.

Mission

Demo data
Running

Raise subscriber conversion

Move subs-per-1k-views on long-form uploads, without lowering 30-second retention.

Baseline
4.2 / 1k
Objective
5.0 / 1k
Now
4.6 / 1k

Metric subscribers gained per 1,000 views, long-form

Active experiments

2

Learning progress

38%

Window ends in 6 weeks

Platforms

YouTube first. TikTok and Instagram in beta. Built for the whole ecosystem.

Core intelligence never assumes one platform's analytics. Where a capability is missing, the engine says so instead of pretending.

  • YouTube

    Available

    Read-only analytics, retention, subscriber conversion.

  • TikTok

    Beta

    Read-only video list and lifetime counts. Invited test accounts while TikTok reviews the app.

  • Instagram

    Beta

    Beta: professional (business or creator) accounts, invited testers only while Meta reviews the app.

  • Facebook

    Planned

    Capability model designed; integration not live.

Pricing indicative

What it costs to run the loop.

The subscription funds a persistent Growth Engineer and a model that keeps learning. Prices and limits below are indicative and may change before launch.

  • Creator

    Understand what has been working.

    $29/ month

    • Historical diagnosis
    • Creator Growth Model
    • Core insights
    • Limited experiments
    Build my Growth Model
  • Growth

    Most complete loop

    Run the loop every week.

    $79/ month

    • Deeper Growth Model
    • More experiments
    • Pre-publish analysis
    • Growth Missions
    • Richer intelligence
    Build my Growth Model
  • Pro

    For creators who run it like a lab.

    $149/ month

    • Advanced experimentation
    • Higher usage
    • Future multi-channel capabilities
    • Professional workflows
    Build my Growth Model

Indicative pricing. No performance fees. No tier promises followers, views or virality: only evidence.

Find out what actually works for you.

Connect one channel and the first patterns come from your own history.

Build my Growth Model