# Rebar Calc vs Grades!

The clearest difference is ads: Grades! at none against Rebar Calc's shown. Rebar Calc's advantage is update cadence (every 2 months vs every 86 months) and iOS requirement (18.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Rebar Calc ships an update every 2 months, Grades! every 86 months. The most recent releases landed on October 21, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Rebar Calc | Grades! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (644 ratings)](https://appshunter.io/ios/app/rebar-calc/id1134344254/reviews)** | — |
| Number of ratings | **644** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 86 months |
| Monetization | Ad-supported | — |
| Size | 13 MB | 0 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Appco LLC (USA)](https://appshunter.io/developer/1027562416) | [Markus Meyerhofer](https://appshunter.io/developer/331452014) |

## What reviewers say

### Rebar Calc

[App page](https://appshunter.io/ios/app/rebar-calc/id1134344254)

This app simplifies concrete and rebar calculations for construction projects. It helps estimate rebar tonnage, mesh quantities, and concrete volume, and can even provide quotes for materials.

**Highlights:** Rebar tonnage calculation, Sheet and roll mesh estimation, Concrete volume estimator, Material quote generation, Adjustable lap amount, Configurable rebar/mesh size

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

**In-app purchases:** none


### Grades!

[App page](https://appshunter.io/ios/app/grades/id1444961527)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rebar Calc free?

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

### Is Grades! free?

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

### Do Rebar Calc or Grades! have ads?

Rebar Calc shows ads; Grades! does not.

### Which is updated more often, Rebar Calc or Grades!?

Rebar Calc ships an update every 2 months, and Grades! every 86 months. Most recently, Rebar Calc was updated on October 21, 2026 and Grades! on October 4, 2026.

---

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