# UnBubble vs Cerne

The clearest difference is update cadence: Cerne at every 4 days against UnBubble's every 8 days. UnBubble's advantage is iOS requirement (17.5 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UnBubble ships an update every 8 days, Cerne every 4 days. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | UnBubble | Cerne |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cerne-co-capture/id6751984534/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 4 days** |
| Monetization | — | Free |
| Size | 17 MB | 12 MB |
| Requires iOS | **17.5** | 26.0 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [FUNDACAO PADRE LEONEL FRANCA](https://appshunter.io/developer/1566582123) | [Andrei Rech](https://appshunter.io/developer/1835715465) |

## What reviewers say

### UnBubble

[App page](https://appshunter.io/ios/app/unbubble/id6648797382)

**Features:** macOS Compatibility

**In-app purchases:** none


### Cerne

[App page](https://appshunter.io/ios/app/cerne-co-capture/id6751984534)

Measure and understand your carbon footprint by identifying trees with augmented reality. Track your personal impact and contribute to a collaborative map of CO₂ capture, helping to support environmental research and reforestation.

**Highlights:** Augmented reality tree identification, Carbon sequestration calculation, Collaborative community mapping, Individual and collective impact tracking, Biodiversity and flora information, CO₂ neutralized and oxygen generated reports

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UnBubble free?

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

### Is Cerne free?

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

### Do UnBubble or Cerne have ads?

Neither UnBubble nor Cerne shows ads.

### Which is updated more often, UnBubble or Cerne?

UnBubble ships an update every 8 days, and Cerne every 4 days. Most recently, UnBubble was updated on October 27, 2026 and Cerne on October 30, 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.*