# Track Tracker Pro vs UNZN (CO2Network)

The clearest difference is in-app purchases: Track Tracker Pro at none against UNZN (CO2Network)'s 8. Track Tracker Pro also leads on device support (3 vs 1) and iOS requirement (11.0 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. UNZN (CO2Network) sells 7 in-app purchases, starting at $10.00 per month. Track Tracker Pro asks for nothing beyond the download.

Track Tracker Pro ships an update fortnightly, UNZN (CO2Network) every 3 weeks. The most recent releases landed on September 10, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Track Tracker Pro | UNZN (CO2Network) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Size | 88 MB | 241 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Darryl Frank Jirinec Ii](https://appshunter.io/developer/1687944309) | [CO2 Network Inc.](https://appshunter.io/developer/1695107694) |

## What reviewers say

### Track Tracker Pro

[App page](https://appshunter.io/ios/app/track-tracker-pro/id6449184433)

**Features:** macOS Compatibility

**In-app purchases:** none


### UNZN (CO2Network)

[App page](https://appshunter.io/ios/app/unzn-co2network/id6450908821)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UNZN Merchant Subscription | $10.00 | per month |
| UNZN Merchant Subscription | $100.00 | per year |
| 15,000p | $9.99 | one-time |
| Citizen Membership | $9.99 | one-time |
| 50,000p | $29.99 | one-time |
| 100,000p | $59.99 | one-time |
| 350,000p | $199.99 | one-time |


## Frequently asked questions

### Is Track Tracker Pro free?

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

### Is UNZN (CO2Network) free?

UNZN (CO2Network) is free to download, with in-app purchases available.

### Do Track Tracker Pro or UNZN (CO2Network) have ads?

Neither Track Tracker Pro nor UNZN (CO2Network) shows ads.

### Which is updated more often, Track Tracker Pro or UNZN (CO2Network)?

Track Tracker Pro ships an update fortnightly, and UNZN (CO2Network) every 3 weeks. Most recently, Track Tracker Pro was updated on September 10, 2026 and UNZN (CO2Network) on September 22, 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.*