Christoph Kay
Christoph worked as an electronics technician in industry for five years and experienced firsthand how missing small parts can slow down processes. Later, as a project manager at P.S. Cooperation GmbH (Böllhoff Group), he introduced digital procurement processes for recurring parts at medium-sized companies and corporations. Today, he is building repleno to largely automate the procurement of consumables in small businesses.
Posts


Automatic Material Ordering in Trades: Guide 2026
Automatic material ordering in trades: how reorder points work, what it costs, and how you cut ordering time, errors, downtime, and overstock in your business.


Digitizing Inventory Management in 5 Steps (No ERP Needed)
Digitize inventory in 5 steps: structure locations, record items, connect suppliers, set reorder points, and engage your team effectively. No ERP required.


Calculating the Hourly Charge-Out Rate: Formula, Example, and Typical Mistakes
Calculate the hourly charge-out rate in craftsmanship: With formula, step-by-step example, and the 5 most common calculation mistakes. Incl. table by trade 2026.


Goods Receipt in a Trades Business: Process, Checklist, and Common Mistakes
Goods receipt in trades businesses: 5-step process, practical checklist, and the 3 most costly mistakes in delivery acceptance and incoming goods inspection.


Excel Inventory Management Alternative: Why Spreadsheets Fail in the Trades
Still using Excel for inventory? Learn why spreadsheets fail in the trades, and how mobile scanning plus automatic reordering saves time and prevents shortages.

Sortly Alternative Germany: Comparison with repleno 2026
Looking for a Sortly alternative in Germany? We compare Sortly and repleno: Features, pricing, GDPR compliance, and suitability for the German trades. Find out which inventory app is the best choice f...


Best Inventory Management Apps for Trades 2026: 6 Tools Compared
Top 6 inventory management apps for trades in 2026 compared: repleno, Sortly, Lager im Griff, HERO, openHandwerk and Inventorum. With criteria, pricing and a GDPR check.

Consumables in Trades: Why the Stockroom is Always Empty
Managing consumables in trades: Why notes and verbal orders fail, what the chaos costs, and which systems really work. With decision aid.

Kanban in the Trades Stockroom: Simply Explained with Practical Examples
Kanban in trades: Two-bin system, practical examples for electrical, HVAC, and painters, introduction in 5 steps. With comparison to Min-Max.

Scan-to-Order in the Trades: Definition, Meaning, and Limitations
Scan-to-Order in the trades explained: meaning, process logic, and limitations. Why reactive barcode ordering is often too late—and which alternatives intervene earlier.

Consumables Calculation: How to Determine Daily Usage Correctly
How do you calculate daily usage of consumables in the trades? Formulas, methods and practical examples for reorder point and stock coverage – with concrete calculation examples for electrical, HVAC a...

Name Bin Locations in the Trades: Z-R-E-F System Step by Step
Name bin locations systematically with Z-R-E-F: introduce a naming convention, avoid common mistakes, 8-step guide + mini audit for your trade warehouse.

Reorder Point Method vs. Min-Max – The Ultimate Comparison of Inventory Control Models (2026 Guide)
Reorder Point Method vs. Min-Max explained: Differences, advantages, disadvantages, calculation examples & practical tips for optimal inventory control.

RFID vs Barcode vs QR Code: Which Technology Fits Your Business?
RFID vs Barcode vs QR Code for SMBs: costs, day-to-day practicality, and common pitfalls in the trades. Hands-on comparison with a decision flow and concrete examples.

Small Load Carriers (SLC) in Warehousing & Production: Standards, ESD, Automation
Why Small Load Carriers (SLC) save time: Euro grid, VDA poolability, ESD options and robotics readiness — plus practical tips for DGUV safety

How to Label Your Shelves Correctly? Shelf Labels for Small Warehouses in 3 Steps (2025)
Create shelf labels for small warehouses in 3 steps. Free tools, templates and tips for trades & workshops. Incl. barcode guide 2025.

Procurement Methods for Consumables in Crafts: Terminology, Examples and Decision Support (2025)
Procurement methods for craft businesses explained: Reorder point, Min/Max, Kanban, VMI. With decision support, practical setup and FAQ. Avoid chaos now.

Min-Max Inventory Management for Trades & Crafts: Practical Guide 2026
How does min-max inventory management work in trades? This practical guide shows calculations, software integration and common mistakes – with examples from electrical, HVAC and carpentry.

The Best Inventory Management in Trades Without ERP: Ultimate Guide 2026
Material losses, ordering stress & paper-based processes adieu: Modern inventory management for trade businesses without ERP complexity. With mobile app, automatic alerts & reorders. Guide 2026 with e...

Digital Procurement in the Trades: 12 Strategies for Automated Materials Management
Learn how trade businesses can save up to 25% on material costs through digital procurement. A practical guide with real-world examples and step-by-step implementation.

Stockroom Organization in the Trades: The Complete Guide 2026
Stockroom organization in the trades 2026: ABC analysis, Kanban, min-max stock, ground zero reset, van inventory and digital tools. With IHK data and practical tips.

What Does a Master and Journeyman Hour Cost in Craftsmanship in 2026?
Current overview of master and journeyman hourly rates for 2026: From roofers to electricians, what costs are incurred in various trades and how the hourly rates are calculated. Includes the definitio...

Trades 2030: How Businesses Can Survive the Skilled Worker Shortage
What will the skilled trades look like in 2030? Despite a shortage of skilled workers, there are paths to success: AI, digital tools, efficient material management, and collaborations will secure the ...

Missing Materials Cost Tradespeople Thousands of Euros Per Year
Material shortage is a costly problem for trades businesses. We show how automatic reordering reduces costs and increases productivity.

Digital Gap in Craft Businesses: Why Procurement Often Falls Behind
Many craft businesses recognize digital opportunities but fail in implementation. Especially procurement remains analog – with consequences for productivity and costs.