# Span64 Construction Calculator — Feet & Inch Fraction Math

> Feet & Inch Fraction Math (iPhone/iPad app by Roberto Garrido.)

- Source: https://appshunter.io/ios/app/span64-construction-calculator/id6789300863 (this page in markdown: same URL + `.md`)
- Developer: [Roberto Garrido](https://appshunter.io/developer/943471024)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 29 MB
- Languages: American English, European Spanish
- Released: 2026-09-02
- Data updated: 2026-10-21

## What is Span64 Construction Calculator?

Exact trade math. Offline. Yours once.

Span64 is an exact feet-inch-fraction Calculator for carpenters, framers, contractors, and serious DIYers. Enter full equations, read stacked fractions clearly, convert between imperial and metric, and keep completed work on a persistent Tape.

THE CALCULATOR IS FREE

The Calculator is free. Jobsite Tools require a one-time unlock.

Add, subtract, multiply, and divide dimensions without ads. Calculator equations and results stay available on your Tape so you can reuse or share them later.

SPAN64 PRO: SEVEN JOBSITE TOOLS

• Triangle / Right-angle
• Area & Volume
• Concrete
• Board Feet
• Stairs
• Roof / Rafter, including common-rafter birdsmouth
• Studs / On-center

Preview every locked Tool with your own measurements before purchasing. A single non-consumable purchase reveals useful numeric results and unlocks all seven Tools forever. There is no subscription, trial countdown, or account.

BUILT FOR REAL WORK

• Exact domain math to 1/64 inch
• Tolerant feet-inch input
• Imperial and metric output where applicable
• Persistent Tape with notes and reuse
• Clear stair checks and focused jobsite forms
• Works without a signal after installation

Purchasing or restoring Span64 Pro requires a network connection so the App Store can verify ownership. Restore Purchases is available from Settings and the Span64 Pro screen.

Your measurements, equations, results, Tape entries, and notes stay on your device. Choose whether to share optional PostHog usage analytics and Sentry crash diagnostics during first use, before the optional demo. Both stay off unless you accept. You can change your choice in Settings. Telemetry uses a pseudonymous installation ID and never includes calculation content. Turning sharing off discards pending telemetry; see our Privacy Policy for data already sent and deletion requests.

Span64 is a calculation aid. Verify measurements, structural decisions, and local code requirements before cutting or building.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Span64 Pro | $19.99 | one-time |


## Is Span64 Construction Calculator safe?

Not enough ratings yet to assess Span64 Construction Calculator.

## Is Span64 Construction Calculator legit?

Span64 Construction Calculator appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Span64 Construction Calculator is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.0.6 — 2026-10-17

• Span64 now speaks Spanish: Calculator, all seven Tools, Tape, Settings, and the widget.
• Bigger keys and a larger result on iPad.
• Triangle, Rafter, and Stairs angles show one decimal, with ~ when rounded.
• Tools now tell you when a measurement is missing its unit.
• Rate Span64 from Settings.

### 1.0.5 — 2026-10-09

• Choose whether to share optional analytics and diagnostics during first use.
• Your measurements and saved calculations stay private.
• Change your sharing choice any time in Settings.

### 1.0.4 — 2026-09-28

Calculator layouts now adapt to smaller screens. Metric memory preserves exact values, fraction keys clearly indicate when unavailable, and accessibility coverage now includes every Tool. Also includes reliability fixes for restored calculations and review prompts.

### 1.0.3 — 2026-09-22

Metric fixes from the second external QA pass.

• Metric calculations now answer in exact millimetres: 1 m = 1000 mm, 500 mm + 1 mm = 501 mm, with no approximation mark.
• The empty result reads 0 mm under a metric primary system instead of 0".
• The inch-fraction keys are greyed out while you type a metric number, and come back as soon as the operand is imperial.
• The Calculator and the Tool keypad now survive a short window — split screen, a desktop window, or a phone that letterboxes the app — with the result and the = key always reachable.

### 1.0.2 — 2026-09-18

• Reopening a Tape row now shows its saved result right away.
• No red warning while you type the first number.
• The widget and the Tape list follow your Imperial or Metric setting.
• iPhone stays in portrait so the result and keypad are always visible.

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| --- | --- | --- | --- |
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## More apps by Roberto Garrido

- [Euskalmoji](https://appshunter.io/ios/app/euskalmoji/id1237364818)
- [AI Meal Planner: Weekly Menu](https://appshunter.io/ios/app/ai-meal-planner-weekly-menu/id1342100580)
- [Bracket 26 - Soccer Predictor](https://appshunter.io/ios/app/bracket-26-soccer-predictor/id6778949738)

All apps by Roberto Garrido: https://appshunter.io/developer/943471024

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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 2026-10-21.*