# Jobsite Calculator Pro: Field — Scale, triangles & site notes

> Scale, triangles & site notes (iPhone/iPad app by hisashi ogino.)

- Source: https://appshunter.io/ios/app/jobsite-calculator-pro-field/id6790102424 (this page in markdown: same URL + `.md`)
- Developer: [hisashi ogino](https://appshunter.io/developer/1328232671)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 7 MB
- Languages: American English, Japanese
- Released: 2026-07-14
- Data updated: 2026-10-31

## What is Jobsite Calculator Pro?

Get the jobsite numbers you need without jumping between separate tools. Jobsite Calculator Pro keeps scale conversion, right-triangle calculations, photo dimensions, sale-price calculations, and everyday arithmetic together in one fast workspace.

Switch between Metric and US (ft/in) across every length tool. U.S. values display in feet, inches, and fractional inches rounded to 1/16 in, while your original measurements remain precise when you switch units.

CALCULATOR & CALCULATION NOTES
Run everyday calculations and keep up to 100 results in a ruled notebook. New results appear at the top, and saved rows can be reordered from their handles.

DRAWING SCALE
Convert actual dimensions to drawing lengths, or drawing lengths back to full size. Includes 1:50, 1:75, 1:100, 1:150, 1:200, and a custom scale.

RIGHT TRIANGLE
Enter the latest two known values among base, hypotenuse, height, and angle to calculate the other two. A dedicated 3:4:5 mode calculates the remaining sides from any one side.

SALE PRICE
Calculate a sale price from cost and gross margin rate or gross profit. Reverse the calculation from sale price when needed. Currency-neutral values make the tool useful with any currency.

PHOTO DIMENSIONS
Mark up to three color-coded dimensions by tapping two points on a photo, enter each measurement with the calculator, and save the annotated image to your photo library.

ONE-HANDED CALCULATOR
Use the same responsive calculator on every screen. In US length fields, quick keys handle feet and common fractions from 1/2 to 1/16 in.

HANDWRITTEN NOTES
Open a persistent drawing pad from any screen, write with a finger or Apple Pencil, and save a snapshot when needed.

Your calculations and settings stay on your device. No account is required. Designed for iPhone and iPad, including compact iPhone screens, iPad mini portrait use, and side-by-side tools on larger iPads in landscape.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Is Jobsite Calculator Pro safe?

Not enough ratings yet to assess Jobsite Calculator Pro.

## Is Jobsite Calculator Pro legit?

Jobsite Calculator Pro: Field has limited verification signals. The AppsHunter Legitimacy Score for Jobsite Calculator Pro is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.2.8 — 2026-09-04

Fixed an issue that could prevent finger drawing in the handwritten memo on iPhone. Added selectable rounding for sale-price calculations, kept a manually closed calculator from reopening when history rows are checked, and widened operator keys on iPad.

### 1.2.7 — 2026-08-12

Added checkboxes to calculator history so selected rows can be totaled and used in the next calculation. Stabilized calculator open/close behavior while rows are selected and prevented unintended calculations from repeated operator taps. Also improved scale and triangle displays, bidirectional cost/selling-price calculation, and photo pinch zoom.

### 1.2.6 — 2026-08-10

Fixed an issue where tapping blank space inside the calculator could close it unexpectedly. Improved photo-dimension input and scrolling, and added a scale calculator that derives drawing scale from drawing and measured lengths.

### 1.2.5 — 2026-07-30

Length settings now follow the app language. Japanese uses Metric throughout, while English continues to offer Metric and US (ft/in), including feet, inches, and fractions down to 1/16 in. Existing measurements remain stored at full precision.

### 1.2.4 — 2026-07-28

Added full English support and a shared Metric / US (ft/in) setting for photo dimensions, drawing scale, and right-triangle tools. U.S. lengths support feet, inches, and fractions down to 1/16 in. Also added a 3:4:5 fixed-ratio mode that calculates the other two sides from any one side.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-31.*