# Dive Plan vs Interval

The clearest difference is in-app purchases: Interval at none against Dive Plan's 3. Interval also leads on update cadence (every 4 days vs monthly) and device support (5 vs 2). Dive Plan's advantage is iOS requirement (16.0 vs 26.0). On price and ads there is nothing between them.

Both are free to download. Dive Plan sells 3 in-app purchases, starting at $2.99 per month. Interval asks for nothing beyond the download.

Dive Plan ships an update monthly, Interval every 4 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Dive Plan | Interval |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (8 ratings)](https://appshunter.io/ios/app/dive-plan/id496279549/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 36.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Paid | — |
| Size | 2 MB | 87 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple TV, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [AXIS Productions](https://appshunter.io/developer/472646203) | [Brian Groskamp](https://appshunter.io/developer/1896650103) |

## What reviewers say

### Dive Plan

[App page](https://appshunter.io/ios/app/dive-plan/id496279549)

This app serves as a digital decompression table and logbook for divers. It helps calculate non-stop dive times and log dives, compatible with major diving organizations' tables. It supports both air and enriched air (nitrox) tanks.

**Highlights:** Digital decompression tables, Dive logbook, Compatibility with major diving organizations, Supports air and nitrox tanks, Practice for dive certification exams, General dive planning guide

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dive Plan Pro - Monthly | $2.99 | per month |
| Dive Plan Pro - Annual | $17.99 | per year |
| Dive Plan Pro Lifetime | $69.99 | one-time |


### Interval

[App page](https://appshunter.io/ios/app/interval-dive-log/id6806797827)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Dive Plan free?

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

### Is Interval free?

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

### Do Dive Plan or Interval have ads?

Neither Dive Plan nor Interval shows ads.

### Which is updated more often, Dive Plan or Interval?

Dive Plan ships an update monthly, and Interval every 4 days. Most recently, Dive Plan was updated on November 1, 2026 and Interval on October 31, 2026.

---

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