# Shark Tooth Tracker vs ReefKeeper

The clearest difference is in-app purchases: Shark Tooth Tracker at none against ReefKeeper's 3. Shark Tooth Tracker also leads on iOS requirement (13.0 vs 17.0). ReefKeeper's advantage is update cadence (weekly vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. ReefKeeper sells 3 in-app purchases, starting at $4.99 per month. Shark Tooth Tracker asks for nothing beyond the download.

Shark Tooth Tracker ships an update every 3 weeks, ReefKeeper weekly. The most recent releases landed on October 16, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Shark Tooth Tracker | ReefKeeper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/shark-tooth-tracker/id6476787130/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 45 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Scott Lewis](https://appshunter.io/developer/1587505519) | [Jose Salcido](https://appshunter.io/developer/1895673171) |

## What reviewers say

### Shark Tooth Tracker

[App page](https://appshunter.io/ios/app/shark-tooth-tracker/id6476787130)

Document your shark tooth discoveries with this app. Capture photos, log locations, and add descriptive notes for each find. Organize your collection and relive your beachcombing adventures.

**Highlights:** Photo catalog of finds, Location logging, Date and time stamps, Descriptive notes, Cloud storage option

**Features:** macOS Compatibility

**In-app purchases:** none


### ReefKeeper

[App page](https://appshunter.io/ios/app/reefkeeper-aquarium-tracker/id6780324072)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reef Keeper Pro Monthly | $4.99 | per month |
| Reef Keeper Pro Yearly | $44.99 | per year |
| Reef Keeper Pro: Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Shark Tooth Tracker free?

Shark Tooth Tracker is free to download, with no in-app purchases.

### Is ReefKeeper free?

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

### Do Shark Tooth Tracker or ReefKeeper have ads?

Neither Shark Tooth Tracker nor ReefKeeper shows ads.

### Which is updated more often, Shark Tooth Tracker or ReefKeeper?

Shark Tooth Tracker ships an update every 3 weeks, and ReefKeeper weekly. Most recently, Shark Tooth Tracker was updated on October 16, 2026 and ReefKeeper on October 13, 2026.

---

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