Strategy & Growth

Mon Marché case study: +40% new clients by repositioning toward families

Over 10 months and an annual budget above €1M, iytro shifted Mon Marché's acquisition from low-margin quick-commerce purchases to profitable weekly family shopping.
June 30, 2026
•
3 min
Jonathan Lumbroso
CEO

Key takeaways

  • +40% new clients at identical acquisition cost.
  • Orders of €150 to €200 from families, versus €15 to €30 before.
  • Google: CAC -50%, clients +60%. Meta: +35% new clients.

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The context: a crowded market and the wrong baskets

Mon Marché delivers groceries in a hyper-competitive urban market undergoing heavy consolidation. Its acquisition manager had left unexpectedly. iytro took over for 10 months, with an annual budget above €1M and a clear aim: move away from low-margin convenience orders toward weekly family shopping.

The diagnosis

  • The wrong customer. The base was mostly urban singles making late-night purchases of alcohol and snacks.
  • Small baskets. The average order value stayed between €15 and €30.
  • Performance only. Media buying relied on promotions and volume, with no brand visibility or market education.
  • A sudden vacancy on paid acquisition.

What iytro did

Brand platform

The brand moved toward human connection with "Le Goût de la Vie", shifting perception from a delivery app to a family culinary partner.

Target refocus

Creatives and performance messaging were redirected to households of three to four people.

Media buying

iytro took over the paid accounts and audited Google, Meta, Snap, Bing and street marketing. Promotional assets gave way to lifestyle video and educational content. 15% of the media budget went to top-of-funnel campaigns.

Steering and forecasting

Dashboards across Meta and Google replaced a fixed monthly budget with a variable budget steered on acquisition cost. Growth scenarios were built at six months, one year and two years.

The results

  • +40% new clients overall, at identical customer acquisition cost.
  • Orders of €150 to €200 from target families.
  • Google: -50% acquisition cost and +60% clients.
  • Meta: +35% new clients.
  • A clean handover to the new internal marketing hire after 10 months.
"iytro's senior experts provided the strategic oversight we needed across brand and acquisition, delivering the high-level seniority required to make rapid, data-driven decisions." EV, CMO, Mon Marché

What this case shows

Changing the customer you recruit takes brand and performance working together. That is the logic of iytro 1+1: one team for strategy and execution.

Further reading: our 7-step marketing strategy method and the marketing strategy audit checklist.

How did Mon Marché grow new clients without raising acquisition cost?

By refocusing on families, replacing promotions with lifestyle and educational content, and steering budget on acquisition cost by channel.

How much budget went to brand?

15% of the media budget was dedicated to top-of-funnel campaigns.

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