RRR Builder Toolkit
Plan your next building job. Calculate material quantities, work out costs and keep related calculations together in projects — all offline.
Everything you need to price and plan a job
For builders, tradespeople, renovators and DIY projects.
Materials
Estimate quantities from area, volume and product coverage, with optional pack sizes and prices.
Brick & Block
Calculate wall quantities, deduct openings, allow for waste and estimate mortar.
Paint
Estimate paintable area, litres and tins for walls, ceilings and exteriors, including coats, doors and windows.
Tiles & Flooring
Work out tiles, boxes, laminate or vinyl packs and carpet length.
Concrete
Calculate volume for slabs, footings, columns, walls and circular shapes.
Roofing
Estimate roof area, tiles or slates and underlay for flat, gable and shed roofs, with batten estimates.
Cost Estimator
Build line-item estimates with material prices, labour, waste and optional VAT.
Unit Converter
Convert length, area, volume and weight.
Area
Calculate rectangles and circles.
Volume
Calculate rectangular boxes and cylinders.
See it in action
Keep your jobs organised
Create projects with a name, type, optional reference and notes. Save calculations, review project totals and reopen saved inputs to recalculate. History brings saved calculations together across projects.
Set it up for your work
Choose Metric or Imperial, GBP, EUR or USD display, default waste and VAT percentages, decimal precision and a light, dark or system theme.
Private and offline
No account or internet connection needed. No advertising, analytics or tracking. Projects and preferences stay on your device and are never transmitted.
App information
| App name | RRR Builder Toolkit |
|---|---|
| Developer | RRR BUILDERS LTD |
| Package name | com.rrrbuilders.toolkit |
| Platform | Android 8.0 (API 26) and later |
| Category | Tools |
| Price | Free · no in-app purchases · no ads |
| Permissions | None requested (no internet, location, camera, contacts or storage access) |
| Data collected | None — all data stays on your device |
| Support | support@rrrbuilders.site |
Policies & support
Planning estimates only. Results are estimates for planning purposes. Check dimensions, product coverage, specifications, prices and tax before ordering or carrying out work. The app does not assess structural safety or building-regulation compliance.