# Construction Calculator Pro #1 vs Keyring

The clearest difference is in-app purchases: Construction Calculator Pro #1 at none against Keyring's 1. Construction Calculator Pro #1 also leads on ratings volume (97 vs 1). Keyring's advantage is review sentiment (100% vs 67%) and rating (5.0 vs 4.5). On price, ads, device support and iOS requirement there is nothing between them.

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

Keyring holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Construction Calculator Pro #1 has 97 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 67% of Construction Calculator Pro #1's written reviews are positive against 100% of Keyring's.

Construction Calculator Pro #1 ships an update every 12 months, Keyring monthly. The most recent releases landed on October 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Construction Calculator Pro #1 | Keyring |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (97 ratings)](https://appshunter.io/ios/app/construction-calculator-pro-1/id6748603879/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/keyring-key-organizer/id6788092339/reviews)** |
| Number of ratings | **97** | 1 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 15 MB | 1 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Oryx](https://appshunter.io/developer/1778234263) | [Joshua Deitel](https://appshunter.io/developer/6774584502) |

## 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


### Keyring

[App page](https://appshunter.io/ios/app/keyring-key-organizer/id6788092339)

Easily identify and organize your keys by photographing and labeling them. Track loaned keys, log their last known locations, and receive notifications for due dates. The app offers offline functionality and prioritizes user data privacy.

**Highlights:** Photograph and label keys, Track loaned keys and due dates, Log key locations with maps, Duplicate key detection, Full activity history, Offline functionality, Siri Shortcuts and Spotlight search

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $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 Keyring free?

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

### Which has better reviews, Construction Calculator Pro #1 or Keyring?

Keyring is rated higher. Construction Calculator Pro #1 averages 4.5 out of 5 from 97 ratings, while Keyring averages 5.0 from 1 ratings.

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

Neither Construction Calculator Pro #1 nor Keyring shows ads.

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

Construction Calculator Pro #1 ships an update every 12 months, and Keyring monthly. Most recently, Construction Calculator Pro #1 was updated on October 24, 2026 and Keyring on October 7, 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.*