# Construction Calculator A1 vs RMS Manager

The clearest difference is in-app purchases: RMS Manager at none against Construction Calculator A1's 6. RMS Manager also leads on ads (none vs shown) and iOS requirement (11.0 vs 15.0). Construction Calculator A1's advantage is update cadence (monthly vs every 4 months) and device support (4 vs 2). On price there is nothing between them.

Both are free to download. Construction Calculator A1 sells 6 in-app purchases, starting at $2.99 per month. RMS Manager asks for nothing beyond the download.

Construction Calculator A1 ships an update monthly, RMS Manager every 4 months. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Construction Calculator A1 | RMS Manager |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (29 ratings)](https://appshunter.io/ios/app/construction-calculator-a1/id1589484051/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 182 MB | 27 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Binary And Bricks Pvt Ltd](https://appshunter.io/developer/1587170688) | [Suryalog](https://appshunter.io/developer/1479407884) |

## What reviewers say

### Construction Calculator A1

[App page](https://appshunter.io/ios/app/construction-calculator-a1/id1589484051)

This comprehensive tool offers over 500 construction calculators, from basic material quantities to complex bills of quantities. It generates automatic drawings, manages material prices, and provides learning resources for civil engineers and contractors.

**Highlights:** 500+ construction calculators, Concrete, rebar, and steel calculations, Feet-inch calculator, Bill of Quantities (BOQ), Automatic drawings, Material price library, Unit converter

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro access monthly subscription | $2.99 | per month |
| Pro access yearly subscription | $24.99 | per year |
| 100 AI Credits | $0.99 | one-time |
| 500 AI credits | $3.99 | one-time |
| 500 AI credits | $9.99 | one-time |
| Lifetime Access | $39.99 | one-time |


### RMS Manager

[App page](https://appshunter.io/ios/app/rms-manager/id6447936158)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Construction Calculator A1 free?

Construction Calculator A1 is free to download, with in-app purchases available.

### Is RMS Manager free?

RMS Manager is free to download, with no in-app purchases.

### Do Construction Calculator A1 or RMS Manager have ads?

Construction Calculator A1 shows ads; RMS Manager does not.

### Which is updated more often, Construction Calculator A1 or RMS Manager?

Construction Calculator A1 ships an update monthly, and RMS Manager every 4 months. Most recently, Construction Calculator A1 was updated on October 30, 2026 and RMS Manager on October 25, 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.*