# Diving Calculator vs FMT

The clearest difference is update cadence: Diving Calculator at weekly against FMT's every 4 months. On price, ads, 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.

Diving Calculator ships an update weekly, FMT every 4 months. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Diving Calculator | FMT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 4 months |
| Size | 33 MB | 34 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alberto Segovia](https://appshunter.io/developer/1724272655) | [GESTEDIA, SL](https://appshunter.io/developer/432735814) |

## What reviewers say

### Diving Calculator

[App page](https://appshunter.io/ios/app/diving-calculator/id6680148006)

**In-app purchases:** none


### FMT

[App page](https://appshunter.io/ios/app/fmt/id6740733907)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Diving Calculator free?

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

### Is FMT free?

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

### Do Diving Calculator or FMT have ads?

Neither Diving Calculator nor FMT shows ads.

### Which is updated more often, Diving Calculator or FMT?

Diving Calculator ships an update weekly, and FMT every 4 months. Most recently, Diving Calculator was updated on September 18, 2026 and FMT on September 17, 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.*