How We Helped a Local Store Increase Sales by 150%

Collins W. Kahihu

Founder & Fullstack Developer at Olive Tree Marco Technologies. Building digital solutions since 2018.

When a Nairobi liquor store owner approached us, they were facing familiar challenges: inventory discrepancies, slow checkout, and no clear picture of daily sales. Staff were using manual logs, and reconciling with M‑Pesa was a nightmare. They needed a system that could track every bottle, integrate mobile money, and provide real‑time insights.

The Challenge

• Inventory shrinkage: Opened bottles and partial sales weren't tracked, leading to losses.
• Slow service: Manual price lookups and calculations caused long queues.
• No reporting: The owner couldn't see which products sold best or identify theft.
• M‑Pesa reconciliation: Matching payments to sales took hours daily.

The Solution: A Custom POS System

We built a tailored Point‑of‑Sale system with:

• Bottle fraction tracking: Sell by the full bottle, half, or quarter – the system automatically updates inventory.
• Keg management: Track cups sold from a keg and alert when empty.
• M‑Pesa integration: Payments flow directly into the system, auto‑matching transactions.
• Role‑based dashboards: Employee (simple sales entry), admin (inventory, reports), bookkeeper (financials).
• Real‑time analytics: See best‑selling items, peak hours, and variance reports.

The Results

Within three months, the store saw dramatic improvements:

• Revenue jumped 150% – faster checkout and better stock management led to more sales.
• Shrinkage dropped by 30% – accurate tracking eliminated unrecorded pours.
• Reconciliation time went from 2 hours daily to 15 minutes – the owner now has time to focus on growth.
• Staff accountability increased – each employee's sales are logged, reducing theft.

The owner shared: "This system changed everything. I know exactly what's in stock, what's selling, and my profits have never been clearer."

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