# Acro Reef vs ReefRanks

The clearest difference is ads: Acro Reef at none against ReefRanks's shown. ReefRanks's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Acro Reef sells 1 one-off in-app purchase and ReefRanks sells 4 in-app purchases, starting at $7.00 per month. Whichever you choose, the download price is not the number that matters.

Acro Reef ships an update every 2 months, ReefRanks every 6 weeks. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Acro Reef | ReefRanks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/reefranks/id6779229334/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 4 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Chih Han Lin](https://appshunter.io/developer/1800248325) | [ReefRanks, LLC](https://appshunter.io/developer/6779229336) |

## What reviewers say

### Acro Reef

[App page](https://appshunter.io/ios/app/acro-reef-tank-tracker/id6774006301)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Acro Pro | $5.99 | one-time |


### ReefRanks

[App page](https://appshunter.io/ios/app/reefranks/id6779229334)

This app allows saltwater reef hobbyists to create a digital portfolio of their coral collections. It uses AI for coral identification, unlocks collectible cards, and fosters a global community for enthusiasts to connect and share their passion.

**Highlights:** Digital coral collection portfolio, AI-powered coral verification, Collectible Coral Cards, ReefXP and leaderboards, Extensive coral database, Coral marketplace, Community profiles and connections

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Collector Monthly | $7.00 | per month |
| Pro Reefer Monthly | $15.00 | per month |
| Collector Yearly | $70.00 | per year |
| Pro Reefer Yearly | $150.00 | per year |


## Frequently asked questions

### Is Acro Reef free?

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

### Is ReefRanks free?

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

### Do Acro Reef or ReefRanks have ads?

ReefRanks shows ads; Acro Reef does not.

### Which is updated more often, Acro Reef or ReefRanks?

Acro Reef ships an update every 2 months, and ReefRanks every 6 weeks. Most recently, Acro Reef was updated on October 7, 2026 and ReefRanks on October 25, 2026.

---

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