Kubaj: Volume Calculator app icon

Kubaj: Volume Calculator

Timber volume calculations in the field

Kubaj calculates the volume of logs, lumber, stacks and standing trees using standard forestry formulas. Save measurements, price them by species and keep simple customer and sales records. It works offline and stores everything on your device.

Works oniPhone · iPad
Languages33
Rating5.0 ★ (1)
PriceFree download · optional subscription
RequiresiOS 18.4 or later
Released2025-06
CategoryBusiness

What it does

Log volume formulas

Calculate log volume with Smalian, Huber, Newton-Riecke or cylinder formulas.

Many measurement types

Handle lumber, stacks, standing trees, hollow logs, stumps, firewood piles, roots and branches.

Batch input and templates

Enter many logs at once and reuse templates and custom species with prices.

Measurement history

Save results with photos, compare them, and view reports and charts.

Customers and sales

Keep customer records, sales and yield calculations in one place.

Export

Export reports as CSV or PDF and back up your settings as a file.

Free and premium. Free use includes log volume with the Smalian formula, lumber and stack calculations, and limited history, templates, species and customers. A subscription unlocks all formulas and advanced calculation types, larger limits, PDF and CSV export, report charts and species pricing.

Screenshots

Privacy at a glance

Your records

Stored on this device, not on our servers.

Account

No account needed. There is no sign-up and nothing to log in to.

Leaves your device

RevenueCat

Ads and tracking

No ads, no tracking across other apps or websites, and we never sell your data. The app contains no analytics SDK.

Please note. Volume and price results are estimates based on the formulas and measurements you enter. Check them against your local legal measurement standard before buying or selling. This is not financial advice.

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