# Construction Calculator Pro #1 vs Stringline

The clearest difference is in-app purchases: Construction Calculator Pro #1 at none against Stringline's 1. Stringline's advantage is update cadence (every 2 weeks vs every 12 months) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Stringline sells 1 one-off in-app purchase. Construction Calculator Pro #1 asks for nothing beyond the download.

Construction Calculator Pro #1 ships an update every 12 months, Stringline every 2 weeks. The most recent releases landed on September 27, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Construction Calculator Pro #1 | Stringline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (96 ratings)](https://appshunter.io/ios/app/construction-calculator-pro-1/id6748603879/reviews)** | — |
| Number of ratings | **96** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 15 MB | 21 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Oryx](https://appshunter.io/developer/1778234263) | [Hector Sahagun](https://appshunter.io/developer/578020588) |

## What reviewers say

### Construction Calculator Pro #1

[App page](https://appshunter.io/ios/app/construction-calculator-pro-1/id6748603879)

This app provides advanced construction math tools for builders and contractors. It offers precise calculations for framing, material estimation, and complex angles, helping to reduce errors and save time on the job.

**Highlights:** Dimensional conversions (feet-inch, decimal, metric), Rafter, stair, and angle calculations, Area, volume, and material estimations, Roofing, drywall, and siding estimates, Quick input with preset fraction buttons

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

**In-app purchases:** none


### Stringline

[App page](https://appshunter.io/ios/app/stringline-construction-calc/id6760807845)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stringline Pro | $2.99 | one-time |


## Frequently asked questions

### Is Construction Calculator Pro #1 free?

Construction Calculator Pro #1 is free to download, with no in-app purchases.

### Is Stringline free?

Stringline is free to download, with in-app purchases available.

### Do Construction Calculator Pro #1 or Stringline have ads?

Neither Construction Calculator Pro #1 nor Stringline shows ads.

### Which is updated more often, Construction Calculator Pro #1 or Stringline?

Construction Calculator Pro #1 ships an update every 12 months, and Stringline every 2 weeks. Most recently, Construction Calculator Pro #1 was updated on September 27, 2026 and Stringline on October 1, 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.*