# Construction Calculator+++ vs RLM

The clearest difference is price: RLM at Free against Construction Calculator+++'s $2.99. RLM also leads on update cadence (every 5 weeks vs every 19 months) and device support (3 vs 1). Construction Calculator+++'s advantage is rating (5.0 vs 3.1) and in-app purchases (none vs 4). On ratings volume, ads and iOS requirement there is nothing between them.

RLM is free to download; Construction Calculator+++ costs $2.99 up front. RLM sells 4 in-app purchases, starting at $0.49 per month. Construction Calculator+++ asks for nothing beyond the download.

Construction Calculator+++ holds the better App Store score, 5.0 against 3.1. Both are backed by a comparable volume of ratings — 3 and 7 respectively. Written reviews point the same way: 100% of Construction Calculator+++'s written reviews are positive against 67% of RLM's.

Construction Calculator+++ ships an update every 19 months, RLM every 5 weeks. The most recent releases landed on September 29, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Construction Calculator+++ | RLM |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/construction-calculator-plus-plus-plus/id879903072/reviews)** | [3.1 (7 ratings)](https://appshunter.io/ios/app/rlm-11cx/id1630739014/reviews) |
| Number of ratings | 3 | **7** |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 5 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 6 MB |
| Requires iOS | **14.4** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dogahe](https://appshunter.io/developer/468657946) | [R.L.M. Software](https://appshunter.io/developer/289639238) |

## What reviewers say

### Construction Calculator+++

[App page](https://appshunter.io/ios/app/construction-calculator-plus-plus-plus/id879903072)

This app streamlines construction math with modules for length, width, and height calculations, material estimation for bricks and drywall, and complex rafter calculations. It also includes tools for circle and arc parameters, offering detailed visualizations.

**Highlights:** Length, width, height calculations, Material estimation (bricks, drywall), Rafter calculations (hip, valley, jack), Circle and arc parameter solver, Unit conversions (feet, inches, yards), Visualizations of geometric shapes

**In-app purchases:** none


### RLM

[App page](https://appshunter.io/ios/app/rlm-11cx/id1630739014)

This app is a scientific and programmable calculator designed for science and engineering, replicating the functionality of the HP-11C. It offers extensive features for finance, business, statistics, complex numbers, and unit conversions, with a programmable interface for custom calculations.

**Highlights:** Finance calculations (amortization, bond price, Black-Scholes), Business functions (break-even, currency exchange), Statistical analysis (regression, probability distributions), Scientific functions (complex numbers, logarithms, trigonometry), Unit and currency conversions, Programmable interface for custom scripts, Equation solver

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.49 | per month |
| Semi-Annual Subscription | $2.99 | per 6 months |
| Annual Subscription | $5.99 | per year |
| Lifetime Purchase | $9.99 | one-time |


## Frequently asked questions

### Is Construction Calculator+++ free?

Construction Calculator+++ costs $2.99, with no in-app purchases.

### Is RLM free?

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

### Which has better reviews, Construction Calculator+++ or RLM?

Construction Calculator+++ is rated higher. Construction Calculator+++ averages 5.0 out of 5 from 3 ratings, while RLM averages 3.1 from 7 ratings.

### Do Construction Calculator+++ or RLM have ads?

Neither Construction Calculator+++ nor RLM shows ads.

### Which is updated more often, Construction Calculator+++ or RLM?

Construction Calculator+++ ships an update every 19 months, and RLM every 5 weeks. Most recently, Construction Calculator+++ was updated on September 29, 2026 and RLM on September 30, 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.*