# Fish Metronome vs Cers IoT

The clearest difference is in-app purchases: Cers IoT at none against Fish Metronome's 2. Fish Metronome's advantage is update cadence (weekly vs every 2 months) and device support (5 vs 3). On price and ads there is nothing between them.

Both are free to download. Fish Metronome sells 2 in-app purchases, starting at $1.99 per 7 days. Cers IoT asks for nothing beyond the download.

Fish Metronome ships an update weekly, Cers IoT every 2 months. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Fish Metronome | Cers IoT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Size | 36 MB | 46 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [之泉 夏](https://appshunter.io/developer/1541453172) | [(주)온전히](https://appshunter.io/developer/1591164615) |

## What reviewers say

### Fish Metronome

[App page](https://appshunter.io/ios/app/fish-metronome/id6758371660)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $1.99 | per 7 days |
| Yearly Plan | $49.99 | per year |


### Cers IoT

[App page](https://appshunter.io/ios/app/cers-iot/id6761812425)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fish Metronome free?

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

### Is Cers IoT free?

Cers IoT is free to download, with no in-app purchases.

### Do Fish Metronome or Cers IoT have ads?

Neither Fish Metronome nor Cers IoT shows ads.

### Which is updated more often, Fish Metronome or Cers IoT?

Fish Metronome ships an update weekly, and Cers IoT every 2 months. Most recently, Fish Metronome was updated on November 5, 2026 and Cers IoT on October 31, 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.*