# CyanoLakes vs Volkano Ring

The clearest difference is in-app purchases: Volkano Ring at none against CyanoLakes's 2. Volkano Ring also leads on iOS requirement (9 vs 15.1). CyanoLakes's advantage is update cadence (every 4 months vs every 23 months). On price, ads and device support there is nothing between them.

Both are free to download. CyanoLakes sells 2 in-app purchases, starting at $4.99 per month. Volkano Ring asks for nothing beyond the download.

CyanoLakes ships an update every 4 months, Volkano Ring every 23 months. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CyanoLakes | Volkano Ring |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/cyanolakes/id1537355837/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 23 months |
| Monetization | Freemium | — |
| Size | 43 MB | 125 MB |
| Requires iOS | 15.1 | **9** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CyanoLakes](https://appshunter.io/developer/1537355839) | [SMD Technologies Pty LTD](https://appshunter.io/developer/1455444362) |

## What reviewers say

### CyanoLakes

[App page](https://appshunter.io/ios/app/cyanolakes/id1537355837)

Receive near real-time forecasts and satellite imagery to avoid harmful algal blooms. Get trusted risk assessments based on WHO guidelines to plan your water activities with confidence. Daily updates are provided for blue-green algal risks, with options to track favorite lakes.

**Highlights:** Harmful algal bloom forecasts, Satellite imagery, WHO-based risk assessments, Daily water quality updates, Personalized lake watchlist, 10-day ahead forecasts (premium)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Subscription | $4.99 | per month |
| Annual Premium Subscription | $34.99 | per year |


### Volkano Ring

[App page](https://appshunter.io/ios/app/volkano-ring/id6478380793)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CyanoLakes free?

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

### Is Volkano Ring free?

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

### Do CyanoLakes or Volkano Ring have ads?

Neither CyanoLakes nor Volkano Ring shows ads.

### Which is updated more often, CyanoLakes or Volkano Ring?

CyanoLakes ships an update every 4 months, and Volkano Ring every 23 months. Most recently, CyanoLakes was updated on November 3, 2026 and Volkano Ring on October 25, 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.*