# CO2 Tracker vs CLIMATE FRINGE

The clearest difference is update cadence: CLIMATE FRINGE at fortnightly against CO2 Tracker's every 3 months. On price, review sentiment, ads and in-app purchases there is nothing between them.

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

CO2 Tracker ships an update every 3 months, CLIMATE FRINGE fortnightly. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | CO2 Tracker | CLIMATE FRINGE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/co2-tracker/id1459765187/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 11 MB | 64 MB |
| Requires iOS | **12.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Madhu Raghavan](https://appshunter.io/developer/1459765186) | [Pocket Applications](https://appshunter.io/developer/1229060590) |

## What reviewers say

### CO2 Tracker

[App page](https://appshunter.io/ios/app/co2-tracker/id1459765187)

Calculate the carbon dioxide output of your flights by entering your departure and arrival cities. Understand the environmental impact of your travel and make more responsible decisions to help protect the planet.

**Highlights:** Calculate flight CO2 output, Enter departure and arrival cities, Select from 40 aircraft types, Determine flight distance, View percentage of annual safe CO2 output

**Features:** macOS Compatibility

**In-app purchases:** none


### CLIMATE FRINGE

[App page](https://appshunter.io/ios/app/climate-fringe/id6443683725)

Discover and promote fringe events happening globally during the COP Climate Change conference. Find out what's on and book your space, or register your own event for free.

**Highlights:** Promote fringe events, Discover global events, Find what's on, Book event spaces, Register events for free

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is CO2 Tracker free?

CO2 Tracker is free to download, with no in-app purchases.

### Is CLIMATE FRINGE free?

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

### Do CO2 Tracker or CLIMATE FRINGE have ads?

Neither CO2 Tracker nor CLIMATE FRINGE shows ads.

### Which is updated more often, CO2 Tracker or CLIMATE FRINGE?

CO2 Tracker ships an update every 3 months, and CLIMATE FRINGE fortnightly. Most recently, CO2 Tracker was updated on October 24, 2026 and CLIMATE FRINGE on October 14, 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.*