# Concrete Engineering vs Revi

The clearest difference is ads: Revi at none against Concrete Engineering's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Concrete Engineering sells 1 one-off in-app purchase and Revi sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Concrete Engineering | Revi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (7 ratings)](https://appshunter.io/ios/app/concrete-engineering-lite/id1132557710/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 2 MB |
| Requires iOS | 18.6 | **17.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [UNISHOP LLC](https://appshunter.io/developer/1833989551) |

## What reviewers say

### Concrete Engineering

[App page](https://appshunter.io/ios/app/concrete-engineering-lite/id1132557710)

This app provides a comprehensive suite of calculators for concrete and civil engineering parameters. It features smart auto-fill options, a detailed calculation history with PDF export, and direct references to ACI codes. Unlock all 56 calculators with a one-time purchase.

**Highlights:** 56 concrete and civil engineering calculators, Metric and Imperial unit support, Detailed formulas for all calculations, Smart auto-fill pickers, Calculation history with PDF export, ACI 318-19 code references

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Concrete Engineering Calc. | $3.99 | one-time |


### Revi

[App page](https://appshunter.io/ios/app/revi-chefequipechantier/id6778133177)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro Access | $7.99 | per month |
| Lifetime Pro Access | $59.99 | one-time |


## Frequently asked questions

### Is Concrete Engineering free?

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

### Is Revi free?

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

### Do Concrete Engineering or Revi have ads?

Concrete Engineering shows ads; Revi does not.

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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.*