# Environmental Observer vs The Chronicle Express

The clearest difference is update cadence: Environmental Observer at weekly against The Chronicle Express's every 3 weeks. The Chronicle Express's advantage is iOS requirement (13.0 vs 15.1). 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.

Environmental Observer ships an update weekly, The Chronicle Express every 3 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | Environmental Observer | The Chronicle Express |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 31 MB | 31 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [UCPM](https://appshunter.io/developer/1852819653) | [Prachi Parwani](https://appshunter.io/developer/1763800772) |

## What reviewers say

### Environmental Observer

[App page](https://appshunter.io/ios/app/environmental-observer/id6755249283)

**Features:** macOS Compatibility

**In-app purchases:** none


### The Chronicle Express

[App page](https://appshunter.io/ios/app/the-chronicle-express/id6755422846)

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

**In-app purchases:** none


## Frequently asked questions

### Is Environmental Observer free?

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

### Is The Chronicle Express free?

The Chronicle Express is free to download, with no in-app purchases.

### Do Environmental Observer or The Chronicle Express have ads?

Neither Environmental Observer nor The Chronicle Express shows ads.

### Which is updated more often, Environmental Observer or The Chronicle Express?

Environmental Observer ships an update weekly, and The Chronicle Express every 3 weeks. Most recently, Environmental Observer was updated on October 25, 2026 and The Chronicle Express 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.*