# Drop Counter vs Reef Stability

The clearest difference is update cadence: Reef Stability at weekly against Drop Counter's monthly. Drop Counter's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Drop Counter sells 1 one-off in-app purchase and Reef Stability sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Drop Counter ships an update monthly, Reef Stability weekly. The most recent releases landed on September 30, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Drop Counter | Reef Stability |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Size | 49 MB | 9 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hannes Huwe](https://appshunter.io/developer/1740987589) | [YUSUF AYDIN](https://appshunter.io/developer/6771871523) |

## What reviewers say

### Drop Counter

[App page](https://appshunter.io/ios/app/drop-counter-water-tracker/id6748688648)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Ad-Free | $0.99 | one-time |


### Reef Stability

[App page](https://appshunter.io/ios/app/reef-stability-dosing-tracker/id6799461220)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $6.99 | per month |
| Premium Annual | $39.99 | per year |
| Premium Lifetime | $89.99 | one-time |


## Frequently asked questions

### Is Drop Counter free?

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

### Is Reef Stability free?

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

### Do Drop Counter or Reef Stability have ads?

Neither Drop Counter nor Reef Stability shows ads.

### Which is updated more often, Drop Counter or Reef Stability?

Drop Counter ships an update monthly, and Reef Stability weekly. Most recently, Drop Counter was updated on September 30, 2026 and Reef Stability on October 11, 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.*