# Entry Viewer vs Reef

The clearest difference is update cadence: Reef at every 6 days against Entry Viewer's every 3 weeks. Reef also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Entry Viewer sells 2 one-off in-app purchases and Reef sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Entry Viewer ships an update every 3 weeks, Reef every 6 days. The most recent releases landed on October 4, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Entry Viewer | Reef |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/reef-scuba-diving-logbook/id6761029175/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Size | 7 MB | 174 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SCOTT MITCHELL](https://appshunter.io/developer/1682277582) | [Anton Usov](https://appshunter.io/developer/1887388788) |

## What reviewers say

### Entry Viewer

[App page](https://appshunter.io/ios/app/entry-viewer/id6447695756)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |
| Where Would I Place | $2.99 | one-time |


### Reef

[App page](https://appshunter.io/ios/app/reef-scuba-diving-logbook/id6761029175)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reef Pro - Monthly | $4.99 | per month |
| Reef Pro - Yearly | $29.99 | per year |


## Frequently asked questions

### Is Entry Viewer free?

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

### Is Reef free?

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

### Do Entry Viewer or Reef have ads?

Neither Entry Viewer nor Reef shows ads.

### Which is updated more often, Entry Viewer or Reef?

Entry Viewer ships an update every 3 weeks, and Reef every 6 days. Most recently, Entry Viewer was updated on October 4, 2026 and Reef on October 24, 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.*