# BalusterPro vs Kerf Construction Calculator

The clearest difference is price: BalusterPro at $2.99 against Kerf Construction Calculator's $9.99. BalusterPro also leads on chart position (#83 vs unranked) and iOS requirement (12.0 vs 26.0). Kerf Construction Calculator's advantage is update cadence (every 10 days vs every 2 months) and device support (4 vs 2). On ads and in-app purchases there is nothing between them.

BalusterPro costs $2.99 and Kerf Construction Calculator $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

BalusterPro ships an update every 2 months, Kerf Construction Calculator every 10 days. The most recent releases landed on October 19, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | BalusterPro | Kerf Construction Calculator |
| --- | --- | --- |
| Price | **$2.99** | $9.99 |
| Rating | **[4.2 (17 ratings)](https://appshunter.io/ios/app/balusterpro/id304928739/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 83.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | Paid | — |
| Best chart rank | **#83** | — |
| Size | 5 MB | 4 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Greg Gabrio](https://appshunter.io/developer/304928742) | [Koreniuk Oleksandr](https://appshunter.io/developer/1563057206) |

## What reviewers say

### BalusterPro

[App page](https://appshunter.io/ios/app/balusterpro/id304928739)

**Currently charting:** #83 Top Paid · Utilities (US App Store)

This app simplifies the calculation of baluster spacing for handrails and other projects requiring equal spacing. It allows users to input dimensions and adjust the number of balusters to meet code requirements, displaying precise measurements on one screen.

**Highlights:** Calculate baluster spacing, Input handrail dimensions, Adjust balusters needed slider, View spacing between balusters, Display centers and edges, Select measurement precision (1/16, 1/32, metric, 1/64), Audio output of measurements

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Time saver for calculations
- 👍 Easy to use for baluster spacing
- ✅ Accurate results
- 🛠️ Versatile for various projects (wainscoting, beams, etc.)
- 💰 Makes money by saving time

**What reviewers complain about**

- ⚠️ Limited angle range (40 degrees)
- 🐌 App is slow
- 튕 Kicks out randomly
- 🔢 Metric input only whole numbers
- 🚫 No option to start with center baluster

**Reported bugs**

- App kicks you out randomly
- App crashes when tapping view tab
- App crashes when clicking on flat run balisters attached

**Requested features**

- Allow angles past 40 degrees
- Loosen angle tolerance
- Update the app
- Add visualization tool
- Option to start with a center baluster


### Kerf Construction Calculator

[App page](https://appshunter.io/ios/app/kerf-construction-calculator/id6788179502)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BalusterPro free?

BalusterPro costs $2.99, with no in-app purchases.

### Is Kerf Construction Calculator free?

Kerf Construction Calculator costs $9.99, with no in-app purchases.

### Do BalusterPro or Kerf Construction Calculator have ads?

Neither BalusterPro nor Kerf Construction Calculator shows ads.

### Which is updated more often, BalusterPro or Kerf Construction Calculator?

BalusterPro ships an update every 2 months, and Kerf Construction Calculator every 10 days. Most recently, BalusterPro was updated on October 19, 2026 and Kerf Construction Calculator on October 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*