# Rebar Calc vs SnapSlab

Rebar Calc and SnapSlab both sit at 4.9 stars, but that hides the real split: 100% of SnapSlab's written reviews are positive against 60% of Rebar Calc's. SnapSlab also leads on ads (none vs shown) and update cadence (every 4 days vs every 2 months). Rebar Calc's advantage is in-app purchases (none vs 2) and ratings volume (637 vs 3). On price, rating and device support there is nothing between them.

Both are free to download. SnapSlab sells 2 in-app purchases, starting at $4.99 per month. Rebar Calc asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Rebar Calc against 5.0 for SnapSlab. That said, the two scores are not equally well evidenced: Rebar Calc has 637 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 60% of Rebar Calc's written reviews are positive against 100% of SnapSlab's.

Rebar Calc ships an update every 2 months, SnapSlab every 4 days. The most recent releases landed on October 16, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Rebar Calc | SnapSlab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (637 ratings)](https://appshunter.io/ios/app/rebar-calc/id1134344254/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/snapslab/id6760370624/reviews)** |
| Number of ratings | **637** | 3 |
| Positive reviews | 60.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 13 MB | 9 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Appco LLC (USA)](https://appshunter.io/developer/1027562416) | [Aaron Parasiliti](https://appshunter.io/developer/1884157838) |

## 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


### SnapSlab

[App page](https://appshunter.io/ios/app/snapslab/id6760370624)

This AI-powered tool helps trading card collectors estimate grading outcomes and analyze market data. It provides real-time sales comparisons and deal analysis to inform buying and selling decisions.

**Highlights:** AI-powered grading estimates, Real-time market comps, Deal analysis tools, Portfolio tracking, Card scanning and uploading

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SnapSlab Pro Monthly | $4.99 | per month |
| SnapSlab Pro Yearly | $34.99 | per year |


## Frequently asked questions

### Is Rebar Calc free?

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

### Is SnapSlab free?

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

### Which has better reviews, Rebar Calc or SnapSlab?

SnapSlab is rated higher. Rebar Calc averages 4.9 out of 5 from 637 ratings, while SnapSlab averages 5.0 from 3 ratings.

### Do Rebar Calc or SnapSlab have ads?

Rebar Calc shows ads; SnapSlab does not.

### Which is updated more often, Rebar Calc or SnapSlab?

Rebar Calc ships an update every 2 months, and SnapSlab every 4 days. Most recently, Rebar Calc was updated on October 16, 2026 and SnapSlab on October 10, 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.*