# Frame vs Concrete Engineering

The clearest difference is in-app purchases: Frame at none against Concrete Engineering's 1. Frame also leads on ads (none vs shown) and iOS requirement (10.0 vs 18.6). On price, update cadence and device support there is nothing between them.

Both are free to download. Concrete Engineering sells 1 one-off in-app purchase. Frame asks for nothing beyond the download.

Frame ships an update every 6 months, Concrete Engineering every 7 months. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Frame | Concrete Engineering |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 months** | Every 7 months |
| Monetization | — | Free with in-app purchases |
| Size | 8 MB | 8 MB |
| Requires iOS | **10.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tsutomu Murata](https://appshunter.io/developer/674892164) | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) |

## What reviewers say

### Frame

[App page](https://appshunter.io/ios/app/frame-i/id674892161)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Frame free?

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

### Is Concrete Engineering free?

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

### Do Frame or Concrete Engineering have ads?

Concrete Engineering shows ads; Frame does not.

### Which is updated more often, Frame or Concrete Engineering?

Frame ships an update every 6 months, and Concrete Engineering every 7 months. Most recently, Frame was updated on September 23, 2026 and Concrete Engineering on September 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*