# Dok2PDF vs Concrete Calculator Tools

The clearest difference is ads: Dok2PDF at none against Concrete Calculator Tools's shown. Dok2PDF also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (11.1 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Dok2PDF sells 1 in-app purchase, starting at $4.99 per month and Concrete Calculator Tools sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Dok2PDF ships an update every 3 weeks, Concrete Calculator Tools every 2 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Dok2PDF | Concrete Calculator Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (51 ratings)](https://appshunter.io/ios/app/concrete-calculator-tools/id6741408557/reviews)** |
| Number of ratings | — | **51** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 21 MB | 39 MB |
| Requires iOS | **11.1** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LemonBit Limited](https://appshunter.io/developer/1501504552) | [Peth Pty Ltd](https://appshunter.io/developer/662891650) |

## What reviewers say

### Dok2PDF

[App page](https://appshunter.io/ios/app/dok2pdf/id1460386894)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Полный доступ (ежемесячно) | $4.99 | per month |


### Concrete Calculator Tools

[App page](https://appshunter.io/ios/app/concrete-calculator-tools/id6741408557)

This app simplifies concrete volume calculations for professionals and DIYers. It offers flexible unit support and a free rectangular slab calculator, with advanced features available via subscription.

**Highlights:** Flexible unit support (metric/imperial), Rectangular slab calculator (free), Circular slab calculator, Circular column calculator, Post hole calculator, Slab from area calculator

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $3.99 | per 7 days |
| Monthly Pro | $5.99 | per month |
| Annual Pro | $19.99 | per year |
| One-Time Purchase | $85.00 | one-time |


## Frequently asked questions

### Is Dok2PDF free?

Dok2PDF is free to download, with in-app purchases available.

### Is Concrete Calculator Tools free?

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

### Do Dok2PDF or Concrete Calculator Tools have ads?

Concrete Calculator Tools shows ads; Dok2PDF does not.

### Which is updated more often, Dok2PDF or Concrete Calculator Tools?

Dok2PDF ships an update every 3 weeks, and Concrete Calculator Tools every 2 months. Most recently, Dok2PDF was updated on October 25, 2026 and Concrete Calculator Tools on October 24, 2026.

---

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