# Diving Rules vs CalC

The clearest difference is in-app purchases: Diving Rules at none against CalC's 2. Diving Rules also leads on iOS requirement (13.0 vs 15.1). CalC's advantage is update cadence (every 4 days vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. CalC sells 2 in-app purchases, starting at $1.99 per month. Diving Rules asks for nothing beyond the download.

Diving Rules ships an update every 6 months, CalC every 4 days. The most recent releases landed on October 25, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Diving Rules | CalC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 days** |
| Size | 35 MB | 297 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Benoit Suzanne](https://appshunter.io/developer/1579861869) | [Le Van Thanh](https://appshunter.io/developer/1835323565) |

## What reviewers say

### Diving Rules

[App page](https://appshunter.io/ios/app/diving-rules/id1579861867)

**Features:** macOS Compatibility

**In-app purchases:** none


### CalC

[App page](https://appshunter.io/ios/app/calc-scientific-calculator/id6751479006)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly | $1.99 | per month |
| Premium yearly | $19.99 | per year |


## Frequently asked questions

### Is Diving Rules free?

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

### Is CalC free?

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

### Do Diving Rules or CalC have ads?

Neither Diving Rules nor CalC shows ads.

### Which is updated more often, Diving Rules or CalC?

Diving Rules ships an update every 6 months, and CalC every 4 days. Most recently, Diving Rules was updated on October 25, 2026 and CalC on October 12, 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.*