# Construction Master 5 Calc vs Stair Stringer

The clearest difference is price: Construction Master 5 Calc at Free against Stair Stringer's $1.99. Construction Master 5 Calc also leads on ratings volume (13K vs 86). Stair Stringer's advantage is in-app purchases (none vs 6) and update cadence (every 5 weeks vs every 3 months). On rating, review sentiment, ads and chart position there is nothing between them.

Construction Master 5 Calc is free to download; Stair Stringer costs $1.99 up front. Construction Master 5 Calc sells 2 in-app purchases, starting at $3.99 per month. Stair Stringer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Construction Master 5 Calc against 4.7 for Stair Stringer. That said, the two scores are not equally well evidenced: Construction Master 5 Calc has 13K ratings behind it against 86, so its average is the more settled of the two. Written reviews are what separate them: 68% of Construction Master 5 Calc's written reviews are positive against 67% of Stair Stringer's.

Construction Master 5 Calc ships an update every 3 months, Stair Stringer every 5 weeks. The most recent releases landed on September 25, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Construction Master 5 Calc | Stair Stringer |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.8 (13K ratings)](https://appshunter.io/ios/app/construction-master-5-calc/id370412148/reviews)** | [4.7 (86 ratings)](https://appshunter.io/ios/app/stair-stringer/id1550828339/reviews) |
| Number of ratings | **13K** | 86 |
| Positive reviews | **67.7% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | #198 | **#126** |
| Size | 73 MB | 2 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [H3 Apps, LLC](https://appshunter.io/developer/598620927) |

## What reviewers say

### Construction Master 5 Calc

[App page](https://appshunter.io/ios/app/construction-master-5-calc/id370412148)

**Currently charting:** #198 Top Grossing · Utilities (US App Store)

This app is a powerful feet-inch-fraction calculator designed for construction professionals. It offers advanced calculation capabilities for layouts, bids, and estimates, simplifying complex measurements and conversions for enhanced project accuracy and efficiency.

**Highlights:** Feet-inch-fraction calculations, Right angle and rafter calculations, Area and volume solutions, Board feet and cost per unit, Dimensional math and conversions, Save or email calculations, Context-sensitive help

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $3.99 | per month |
| 1 Year Full Access | $34.99 | per year |

**What reviewers like**

- 👍 Convenient to have on phone
- 💡 Useful for construction work
- 🚀 Performs like physical calculator
- 👍 Helpful for calculations and estimates
- 👍 Great tool for framers and carpenters

**What reviewers complain about**

- 💰 Expensive subscription model
- 🤔 Prefer one-time purchase option
- 🤔 Subscription cost as much as physical calculator
- 🤔 Should allow trial before subscription
- 🐛 Issues with restoring purchases

**Reported bugs**

- App not working without internet connection
- Crashes or freezes on some devices
- Login/purchase issues when switching devices

**Requested features**

- Add Apple Watch support
- Offer one-time purchase option
- Improve compatibility with older devices
- Provide a free version with limited features


### Stair Stringer

[App page](https://appshunter.io/ios/app/stair-stringer/id1550828339)

**Currently charting:** #126 Top Paid · Utilities (US App Store)

This app calculates all necessary measurements for building a stair stringer, including risers, run, angle, and length. Easily adjust parameters and switch between Imperial and Metric units. Share your calculated results via email or text.

**Highlights:** Calculates stair risers and run, Determines stair angle and stringer length, Calculates step height and tread depth, Determines the number of steps, Adjustable parameters, Imperial or Metric units, Share results via email/text

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Construction Master 5 Calc free?

Construction Master 5 Calc is free to download, with in-app purchases available.

### Is Stair Stringer free?

Stair Stringer costs $1.99, with no in-app purchases.

### Which has better reviews, Construction Master 5 Calc or Stair Stringer?

Construction Master 5 Calc is rated higher. Construction Master 5 Calc averages 4.8 out of 5 from 13K ratings, while Stair Stringer averages 4.7 from 86 ratings.

### Do Construction Master 5 Calc or Stair Stringer have ads?

Neither Construction Master 5 Calc nor Stair Stringer shows ads.

### Which is updated more often, Construction Master 5 Calc or Stair Stringer?

Construction Master 5 Calc ships an update every 3 months, and Stair Stringer every 5 weeks. Most recently, Construction Master 5 Calc was updated on September 25, 2026 and Stair Stringer on September 23, 2026.

### Which is more popular, Construction Master 5 Calc or Stair Stringer?

Construction Master 5 Calc currently peaks at #198 in the App Store charts, and Stair Stringer at #126. Chart position reflects recent download velocity rather than total install base.

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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.*