# MMM Calc vs Pipe Slope Invert Planner

The clearest difference is price: MMM Calc at Free against Pipe Slope Invert Planner's $4.99. MMM Calc also leads on iOS requirement (12.0 vs 17.0). Pipe Slope Invert Planner's advantage is update cadence (fortnightly vs every 4 months). On ads, in-app purchases and device support there is nothing between them.

MMM Calc is free to download; Pipe Slope Invert Planner costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MMM Calc ships an update every 4 months, Pipe Slope Invert Planner fortnightly. The most recent releases landed on November 1, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | MMM Calc | Pipe Slope Invert Planner |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/mmm-calc/id500911329/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 13 MB | 1 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Martin Marietta Materials Inc](https://appshunter.io/developer/1030484093) | [光 杨](https://appshunter.io/developer/1891134953) |

## What reviewers say

### MMM Calc

[App page](https://appshunter.io/ios/app/mmm-calc/id500911329)

This application helps users quickly calculate their concrete, aggregate, ready-mix, and asphalt needs. It serves as a straightforward tool for material estimation in construction and related projects.

**Highlights:** Concrete calculation, Aggregate estimation, Ready-mix calculation, Asphalt needs, Material estimation tool

**Features:** macOS Compatibility

**In-app purchases:** none


### Pipe Slope Invert Planner

[App page](https://appshunter.io/ios/app/pipe-slope-invert-planner/id6768115052)

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

**In-app purchases:** none


## Frequently asked questions

### Is MMM Calc free?

MMM Calc is free to download, with no in-app purchases.

### Is Pipe Slope Invert Planner free?

Pipe Slope Invert Planner costs $4.99, with no in-app purchases.

### Do MMM Calc or Pipe Slope Invert Planner have ads?

Neither MMM Calc nor Pipe Slope Invert Planner shows ads.

### Which is updated more often, MMM Calc or Pipe Slope Invert Planner?

MMM Calc ships an update every 4 months, and Pipe Slope Invert Planner fortnightly. Most recently, MMM Calc was updated on November 1, 2026 and Pipe Slope Invert Planner on October 6, 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.*