# Subsurface vs VizReport

The clearest difference is rating: Subsurface at 4.5 against VizReport's 3.0. Subsurface also leads on in-app purchases (none vs 1) and ratings volume (48 vs 2). VizReport's advantage is update cadence (every 5 days vs every 2 months) and iOS requirement (15.0 vs 17). On price, ads and device support there is nothing between them.

Both are free to download. VizReport sells 1 in-app purchase, starting at $9.99 per month. Subsurface asks for nothing beyond the download.

Subsurface holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: Subsurface has 48 ratings behind it against 2, so its average is the more settled of the two.

Subsurface ships an update every 2 months, VizReport every 5 days. The most recent releases landed on October 14, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Subsurface | VizReport |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (48 ratings)](https://appshunter.io/ios/app/subsurface-mobile/id1093217161/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/vizreport/id6759271837/reviews) |
| Number of ratings | **48** | 2 |
| Positive reviews | 63.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | **Free** | Freemium |
| Size | 52 MB | 66 MB |
| Requires iOS | 17 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dirk Hohndel](https://appshunter.io/developer/1093217160) | [GeoPelagic LLC](https://appshunter.io/developer/1679818160) |

## What reviewers say

### Subsurface

[App page](https://appshunter.io/ios/app/subsurface-mobile/id1093217161)

This application allows divers to manage their dive logs on their mobile devices. It supports editing dive data and downloading new information from compatible dive computers. Optional cloud synchronization is available for seamless data transfer with desktop versions.

**Highlights:** Mobile dive log management, Edit dive data, Download from Bluetooth LE dive computers, Optional cloud synchronization, Open-source and free

**In-app purchases:** none


### VizReport

[App page](https://appshunter.io/ios/app/vizreport/id6759271837)

This app provides daily water visibility reports using satellite data, helping divers plan their dives. It offers insights into sea surface temperature, chlorophyll concentration, and ocean currents, with global coverage and offline capabilities.

**Highlights:** Satellite-powered water visibility reports, Sea surface temperature data, Chlorophyll concentration tracking, Ocean current analysis, Global 3D bathymetry, Offline chart and data access, Daily data updates

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VizReport Pro | $9.99 | per month |


## Frequently asked questions

### Is Subsurface free?

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

### Is VizReport free?

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

### Which has better reviews, Subsurface or VizReport?

Subsurface is rated higher. Subsurface averages 4.5 out of 5 from 48 ratings, while VizReport averages 3.0 from 2 ratings.

### Do Subsurface or VizReport have ads?

Neither Subsurface nor VizReport shows ads.

### Which is updated more often, Subsurface or VizReport?

Subsurface ships an update every 2 months, and VizReport every 5 days. Most recently, Subsurface was updated on October 14, 2026 and VizReport on October 19, 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.*