# Baluster Gap & Spacing Calc

> Deck Railing Spindle Count

Canonical page: [https://chrome-stats.com/d/id6761641184](https://chrome-stats.com/d/id6761641184)

## Overview

- **ID:** `id6761641184`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Shanghai Sheyuan Network Technology Co., Ltd.
- **Category:** Utilities
- **Version:** 1.0.2
- **Last updated:** 2026-06-27
- **First published:** 2026-04-07
- **Size:** 1.04 MB
- **Data as of:** 2026-09-25
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/baluster-gap-spacing-calc/id6761641184)
- **Website:** [https://calcspec.com/app-privacy.html](https://calcspec.com/app-privacy.html)
- **Privacy policy:** [https://calcspec.com/app-privacy.html](https://calcspec.com/app-privacy.html)

## Description

11ft 7in deck span, 1.5-inch balusters - even gaps under the 4-inch sphere? Exact count, gap, on-center spacing, IRC R312.1 / IBC pass-fail. $4.99 one-time, no login.

Guessing at baluster spacing wastes material and risks failing inspection. The 4-inch sphere rule sounds simple, but getting even gaps across an odd-length span requires math. This app does it instantly.

Enter total span between posts, baluster width, post width, and max allowed gap (IRC 4-inch residential or IBC 6-inch commercial preset). Get the exact number of balusters, actual gap size, on-center spacing, and instant code pass/fail check.

Supports deck railings, stair railings, fence sections, and porch guards. IRC R312.1 and IBC compliant gap limits built in. Shows full layout summary with post-to-baluster spacing.

KEY FEATURES:
- IRC and IBC gap presets
- Even spacing calculation
- Code compliance check
- Works completely offline
- No account or login required

Built for deck builders, carpenters, general contractors, and home inspectors.

## Rankings

- #1,962,992 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6761641184)