New: we set up our AI workflows inside your marketing team
About

Two founders. No filter.

Zero Filter Growth exists because most marketing advice is either templated or unaccountable. We'd rather tell you what we see, fix it, and show you the numbers. There are two of us, and we do the work ourselves.

The founders
Vishal Vaibhav Dhanuka

Vishal Vaibhav Dhanuka

Co-founder · Paid media, measurement and AI workflows

Sixteen years in growth marketing. Ran about $10M a month in ad spend across Fortune 50 brands at Accenture, set up a team working with the Google Ads product group, and built a $6M+ a year business on Microsoft Ads from zero. Also builds GruntStack, where he publishes free AI workflows for running ads.

  1. Accenture

    About $10M a month in media spend across Fortune 50 brands.

  2. Google

    Set up a team working directly with the Google Ads product group. Its feedback helped lift keyword recommendation relevance from 55% to 85%.

  3. Microsoft Ads

    Built a tax vertical from zero into a $6M+ a year business and took the top ad spot from TurboTax.

  4. Voice AI

    Built an inbound phone funnel run by voice AI: 9.5% conversion against 4.5% on the web, $500k in contribution margin.

  5. Email

    Took a client's 100,000-person list from 2% of revenue to 15%.

Bengaluru, Indiavizoomer.com

Harrie van de Sande

Harrie van de Sande

Co-founder · SEO, AI search and ecommerce growth

Search specialist with an ecommerce operator’s eye. Spent four and a half years on search at a European cat furniture brand: first as SEO specialist, then leading SEO, paid search and email across all its markets. Technical SEO, site structure and conversion are home turf.

  1. Ecommerce, in-house

    Led SEO, paid search and email marketing for a cat furniture brand across the Netherlands, Germany, France and Belgium. Yearly revenue grew by more than 30%.

  2. International SEO

    Built multi-country SEO strategies: site structure, technical fixes and content, working with copywriters and developers.

  3. Strategy

    Plans and runs marketing strategy for companies, with a focus on SEO and paid media.

The Netherlands

One of us lives in paid media and data, the other in search and ecommerce. Between the two, most growth problems land on a desk that has seen them before.

How we work

Five rules we don't bend.

01

Say it as it is

If an idea won't work, or a channel isn't worth it for you, you'll hear it first.

02

Numbers with context

Every figure says whose result it is and where it came from. No vanity metrics.

03

You own everything

Accounts, data, dashboards, workflows and documentation stay yours.

04

Few clients, deep work

A small number at a time, so the person diagnosing is the person fixing.

05

AI where it's earned

Agents do the repetitive work. People make the calls, and approve anything that spends money.

Open book

See the tools first

We publish the AI workflows we use at GruntStack, free. Try one before you talk to us.

Where we came from

Zero Filter Growth is the new home of The Growth Sauce, our earlier agency in the Netherlands. Its services and case study now live here, and old Growth Sauce links land on the matching page.

Think you’re a fit?

Tell us what you sell and the one number you want to move. You’ll get a straight answer on whether we can help, even if the answer is no.

Talk to a founder