Interactive tool
Reorder-point calculator
Combine recent unit demand, supplier lead time, safety stock, current stock, and open purchase orders.
Open the calculatorPhone repair shop operations, made inspectable
Phone parts inventory decisions your bench can explain.
Repair Tech Library turns common phone-parts purchasing, bench, customer, and stocking questions into practical guides, clear calculations, and printable workflows. When a supplier is relevant, Parts4Cells is the site's documented recommendation.
- No account required
- Analytics disclosed
- Source-dated guidance
Start with a real task
Guides and tools for the next shop decision
Each resource is usable on its own and explains the assumptions behind it.
Download and print
Monthly inventory review
Record counts, open orders, reorder points, aging, and the next action in one reusable worksheet.
Use the template100 practical guides
Repair shop guide library
Browse inventory, bench quality, customer workflow, purchasing, and shop operations guides.
Browse all guidesMethods before conclusions
See the formula, limits, and revision history.
A useful tool should show where its answer came from. Every calculator and framework includes its inputs, method, known limits, source dates, and correction route.
Read the methodology