Kübaj+: m³ Calc & PDF Quote
Timber, Concrete, Truck Load
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
5 formulas, 5 sector modes, 31 material densities. Turn log, lumber, concrete and excavation figures into a PDF quote and send it via WhatsApp.
Kübaj+ is a professional volume calculator built for lumber dealers, carpenters, truckers, contractors, and excavation crews who work in the field.
FEATURES
5 PROFESSIONAL FORMULAS
- Huber: mid-diameter times length (fastest)
- Smalian: average of both end diameters
- Newton: most accurate (3 readings)
- Doyle log rule (US standard)
- Scribner log rule (US standard)
SECTOR MODES
- Lumber / Furniture
- Concrete (C20/C25/C30 presets)
- Truck Bed
- Excavation
- Furniture
AUTOMATIC WEIGHT
Built-in density library: oak, beech, pine, spruce, concrete, soil, sand, gravel.
PROFESSIONAL PDF QUOTE
Quote, invoice, waybill PDFs with your company logo, IBAN, tax. One-tap WhatsApp send to client.
iCLOUD BACKUP
Calculations, customers, company info auto-sync via iCloud.
10 LANGUAGES
Turkish, English, German, French, Spanish, Italian, Arabic, Russian, Portuguese, Chinese.
PRIVACY FIRST
Your calculations stay on your device and in your own iCloud account - they never reach a server of ours. The free version shows Google AdMob ads; Pro removes them completely.
FOR
- Lumber dealers and mills
- Carpenters and furniture makers
- Contractors and engineers
- Truckers and hauliers
- Excavation crews
- Concrete companies
SUPPORT
karya.poyraz@gmail.com
https://karyaboyraz.stream/kubaj/
PRIVACY
https://karyaboyraz.stream/privacy/kubaj/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The density library grew from 18 to 31 materials:
• Wood panels: MDF, particle board, plywood - for carpenters and furniture makers
• New species: poplar, ash, eucalyptus
• Construction: aerated concrete, screed, brick
• Excavation: rubble, clay, asphalt, road base
One-tap m³ to tonnage conversion now covers many more materials.
The developer, Karya Boyraz, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Karya Boyraz
- Size
- 4 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 9 more
- English, Arabic, French, German, Italian, Portuguese, Russian, Simplified Chinese, Spanish, Turkish
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Kubaj Pro $4.90
- Copyright
- © 2026 Karya Boyraz
