# Diver Tools vs Formula Calculator #

The clearest difference is price: Formula Calculator # at Free against Diver Tools's $9.99. Formula Calculator # also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.0). Diver Tools's advantage is in-app purchases (none vs 4). On update cadence and ads there is nothing between them.

Formula Calculator # is free to download; Diver Tools costs $9.99 up front. Formula Calculator # sells 4 one-off in-app purchases. Diver Tools asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on September 8, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Diver Tools | Formula Calculator # |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/formula-calculator/id6504839903/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 67 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Michael Gibby](https://appshunter.io/developer/1613178461) | [威 刘](https://appshunter.io/developer/1465235012) |

## What reviewers say

### Diver Tools

[App page](https://appshunter.io/ios/app/diver-tools/id1613178459)

**Features:** macOS Compatibility

**In-app purchases:** none


### Formula Calculator #

[App page](https://appshunter.io/ios/app/formula-calculator/id6504839903)

Perform calculations with a vast library of built-in formulas or create your own. Save and sync custom formulas to the cloud for easy access across devices. Includes a comprehensive scientific calculator.

**Highlights:** Extensive built-in calculation formulas, Create and save custom formulas, Cloud synchronization for custom formulas, Share custom formulas with others, Comprehensive scientific calculator

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month subscription | $1.49 | one-time |
| 3 months subscription | $2.49 | one-time |
| 6 months subscription | $3.49 | one-time |
| 1 year subscription | $4.49 | one-time |


## Frequently asked questions

### Is Diver Tools free?

Diver Tools costs $9.99, with no in-app purchases.

### Is Formula Calculator # free?

Formula Calculator # is free to download, with in-app purchases available.

### Do Diver Tools or Formula Calculator # have ads?

Both Diver Tools and Formula Calculator # show ads.

### Which is updated more often, Diver Tools or Formula Calculator #?

Diver Tools ships an update every 5 weeks, and Formula Calculator # every 5 weeks. Most recently, Diver Tools was updated on September 8, 2026 and Formula Calculator # on September 14, 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.*