# Diving Calculator vs Active Log

The clearest difference is in-app purchases: Diving Calculator at none against Active Log's 4. Diving Calculator also leads on iOS requirement (12.0 vs 15.6). Active Log's advantage is update cadence (every 3 days vs weekly). On price, ads and device support there is nothing between them.

Both are free to download. Active Log sells 4 in-app purchases, starting at $4.99 per year. Diving Calculator asks for nothing beyond the download.

Diving Calculator ships an update weekly, Active Log every 3 days. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Diving Calculator | Active Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/active-log/id6756741575/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 33 MB | 75 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alberto Segovia](https://appshunter.io/developer/1724272655) | [Duong Do](https://appshunter.io/developer/1455884076) |

## What reviewers say

### Diving Calculator

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

**In-app purchases:** none


### Active Log

[App page](https://appshunter.io/ios/app/active-log/id6756741575)

This app serves as a comprehensive dive logbook for scuba and freediving enthusiasts. It allows users to track progress, plan dives, import data from dive computers and existing files, and store important documents. It also includes safety calculators and works offline.

**Highlights:** Dive computer data import, Log file import (SSRF, .FIT), Dive planning and profile tracking, Document and certification storage, Offline functionality, Safety calculators (MOD, EAD, ppO2), Cloud sync across devices

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Freediving module (yearly) | $4.99 | per year |
| TechDive module (yearly) | $4.99 | per year |
| Swimming module (yearly) | $4.99 | per year |
| Diving module (yearly) | $9.99 | per year |


## Frequently asked questions

### Is Diving Calculator free?

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

### Is Active Log free?

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

### Do Diving Calculator or Active Log have ads?

Neither Diving Calculator nor Active Log shows ads.

### Which is updated more often, Diving Calculator or Active Log?

Diving Calculator ships an update weekly, and Active Log every 3 days. Most recently, Diving Calculator was updated on October 6, 2026 and Active Log 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.*