# Concrete Engineering vs Procédures Fiscales Tchad

The clearest difference is price: Procédures Fiscales Tchad at Free against Concrete Engineering's $3.99. Procédures Fiscales Tchad also leads on update cadence (weekly vs every 23 months) and iOS requirement (11.0 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

Procédures Fiscales Tchad is free to download; Concrete Engineering costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Concrete Engineering ships an update every 23 months, Procédures Fiscales Tchad weekly. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Concrete Engineering | Procédures Fiscales Tchad |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.2 (10 ratings)](https://appshunter.io/ios/app/concrete-engineering/id643608704/reviews)** | — |
| Number of ratings | **10** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Weekly** |
| Monetization | Paid | — |
| Size | 8 MB | 62 MB |
| Requires iOS | 18.6 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Observatoire Tchadien des Finances Publiques](https://appshunter.io/developer/1647810040) |

## What reviewers say

### Concrete Engineering

[App page](https://appshunter.io/ios/app/concrete-engineering/id643608704)

This app provides civil engineers with a comprehensive suite of 56 calculators for concrete design and analysis. It features smart auto-fill pickers, calculation history with PDF export, and direct ACI code references for all calculations.

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

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

**In-app purchases:** none


### Procédures Fiscales Tchad

[App page](https://appshunter.io/ios/app/procedures-fiscales-tchad/id6444067923)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Concrete Engineering free?

Concrete Engineering costs $3.99, with no in-app purchases.

### Is Procédures Fiscales Tchad free?

Procédures Fiscales Tchad is free to download, with no in-app purchases.

### Do Concrete Engineering or Procédures Fiscales Tchad have ads?

Neither Concrete Engineering nor Procédures Fiscales Tchad shows ads.

### Which is updated more often, Concrete Engineering or Procédures Fiscales Tchad?

Concrete Engineering ships an update every 23 months, and Procédures Fiscales Tchad weekly. Most recently, Concrete Engineering was updated on November 4, 2026 and Procédures Fiscales Tchad on November 3, 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.*