# Construction Master Pro Calc vs InboxGuard

The clearest difference is price: Construction Master Pro Calc at Free against InboxGuard's $0.99. Construction Master Pro Calc also leads on chart position (#50 vs unranked) and iOS requirement (15.0 vs 17.6). InboxGuard's advantage is in-app purchases (none vs 20). On update cadence, ads and device support there is nothing between them.

Construction Master Pro Calc is free to download; InboxGuard costs $0.99 up front. Construction Master Pro Calc sells 12 in-app purchases, starting at $3.69 per month. InboxGuard asks for nothing beyond the download.

Construction Master Pro Calc ships an update every 3 weeks, InboxGuard monthly. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Construction Master Pro Calc | InboxGuard |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.8 (40K ratings)](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446/reviews)** | — |
| Number of ratings | **40K** | — |
| Positive reviews | 59.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#50** | — |
| Size | 111 MB | 4 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [Shashwat Patel](https://appshunter.io/developer/1873309489) |

## What reviewers say

### Construction Master Pro Calc

[App page](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446)

**Currently charting:** #50 Top Grossing · Utilities (US App Store)

This app is a powerful construction calculator designed for professionals working with dimensions. It offers a wide range of solutions for dimensional math, right angle calculations, area and volume, and special functions, helping to improve speed and accuracy in layouts, bids, and estimates.

**Highlights:** Dimensional math and conversions, Right angle and rafter calculations, Area and volume solutions, Full trigonometric functions, Built-in user's guide and help, Save and share calculations, Project notes and attachments

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $3.69 | per month |
| 1 Month Full Access | $4.99 | per month |
| 1 Month Full Access | $4.99 | per month |
| 1 Month Full Access | $4.99 | per month |
| CMPro Full Access | $9.99 | per year |
| 6 Months Full Access | $19.99 | per 6 months |
| 1 Year Full Access | $19.99 | per year |
| 1 Year Full Access | $29.99 | per year |
| 1 Year Full Access | $39.99 | per year |
| 1 Year Full Access | $39.99 | per year |
| 1 Year Full Access | $39.99 | per year |
| 1 Year Full Access | $39.99 | per year |

**What reviewers like**

- 🚀 Convenient and always available
- ⚙️ Comprehensive construction calculations
- 💪 Industry-standard tool
- 🔍 Accurate and reliable
- 📱 Integrates well with mobile devices

**What reviewers complain about**

- 💰 Subscription model too expensive
- 🔒 Locks data behind subscription
- 🔄 Forced to re-purchase after device changes
- 🔍 Lacks full metric support
- 🔧 Occasional UI/UX issues

**Reported bugs**

- Crashes or freezes on certain devices
- Calculation errors in some scenarios
- Inconsistent behavior after updates

**Requested features**

- Add metric unit support
- Offer one-time purchase option
- Improve backup and data transfer
- Add more customization options
- Enhance overall user experience


### InboxGuard

[App page](https://appshunter.io/ios/app/inboxguard/id6762069042)

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

**In-app purchases:** none


## Frequently asked questions

### Is Construction Master Pro Calc free?

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

### Is InboxGuard free?

InboxGuard costs $0.99, with no in-app purchases.

### Do Construction Master Pro Calc or InboxGuard have ads?

Neither Construction Master Pro Calc nor InboxGuard shows ads.

### Which is updated more often, Construction Master Pro Calc or InboxGuard?

Construction Master Pro Calc ships an update every 3 weeks, and InboxGuard monthly. Most recently, Construction Master Pro Calc was updated on October 15, 2026 and InboxGuard 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.*