Free tools for brands and learners
Two shelves. Founders and operators get calculators for retention and profitability maths in rupees, and guides built from the work behind my case studies. Learners get quizzes with a rating and a shareable scorecard, interview guides and a career starter kit. All free.
For founders and operators
Calculators No sign-up. Your numbers stay in your browser
Customer lifetime value calculator
What a customer is worth over their whole relationship with you, in revenue and in profit.
Open the calculatorRetentionRepeat purchase rate calculator
How many new customers from a month, a year or a sale came back for a second order, and why your Shopify dashboard tells a different story.
Open the calculatorChannelsWhatsApp marketing cost calculator
Estimate what your WhatsApp messages cost at Meta’s rates, and how much more your provider charges.
Open the calculatorProfitabilityBreak-even ROAS calculator
Your profit per order as CM1, CM2 and CM3, and the ROAS your ads need to break even, after GST, COD and RTO.
Open the calculatorLTV to CAC ratio
Whether each customer pays back what it cost to win them, and the most you can spend to acquire one.
CAC payback period
How many months a new customer takes to earn back their acquisition cost.
Guides Fillable PDFs, free
Platforms · Free PDFCRM platform buyer’s checklist
What to ask CleverTap, MoEngage, WebEngage and Kwik Engage before you sign, plus a scorecard for your shortlist.
Get the guide
WhatsApp · Free PDFWhatsApp delivery audit
Find out why your WhatsApp messages stopped arriving: error codes, frequency, replies, retries and an 8-week tracker.
Get the guide
Win-back · Free PDFWin-back campaign planner
Find the data you already hold on lapsed customers, turn it into a message that sounds human, and track the results.
Get the guide
Journeys · Free PDFEcommerce journey audit
Score your store against the 13 journeys a D2C brand needs, check the rules between them, and pick what to build next.
Get the guideFor learners
Quizzes Pick a level, get rated, share your scorecard. No sign-up
Digital marketing quiz
310 questions on SEO, Google Ads, Meta ads, social media and CRM. Pick your level and length, get rated, share your scorecard.
Take the quizFor learners · SEOSEO quiz
50 SEO questions on on-page, technical, links and AI search. Basic to advanced, with a rating and a scorecard.
Take the quizFor learners · Meta adsFacebook ads quiz
50 Meta ads questions on Advantage+, creative, Pixel and CAPI, and budgets. Basic to advanced, with a rating.
Take the quizFor learners · Google AdsGoogle Ads quiz
50 Google Ads questions on search, bidding, Shopping and Performance Max. Basic to advanced, with a rating.
Take the quizGuides and kits Interview answers and the career starter kit
Careers · Free PDFRetention career starter kit
For students and freshers: a 90-day plan, a metrics cheat sheet, practice projects and a job tracker for your first CRM role.
Get the guideInterviews · Free guides100 interview questions
Model answers for digital marketing, SEO, Google Ads, Meta ads, social media and CRM interviews, each with a short quiz.
Read the guidesWant to move the number?
A 30-minute call. Bring your numbers and you will leave knowing which lever matters most for your brand.