# Klima vs Four Shields

The clearest difference is in-app purchases: Klima at none against Four Shields's 2. Klima also leads on iOS requirement (13.0 vs 17.0). Four Shields's advantage is update cadence (every 4 days vs every 4 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Four Shields sells 2 in-app purchases, starting at $5.99 per month. Klima asks for nothing beyond the download.

Klima ships an update every 4 weeks, Four Shields every 4 days. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Klima | Four Shields |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/klima-taler/id6444569111/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 73.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 4 days** |
| Monetization | Ad-supported | — |
| Size | 9 MB | 124 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Changers](https://appshunter.io/developer/930391921) | [Blain Bertrand](https://appshunter.io/developer/6796352076) |

## What reviewers say

### Klima

[App page](https://appshunter.io/ios/app/klima-taler/id6444569111)

Earn rewards for eco-friendly travel like walking, cycling, and using public transport. Track your CO₂ savings and redeem earned currency for discounts on events, activities, and local partner offers. Discover tips for a sustainable lifestyle and participate in community projects.

**Highlights:** Track journeys by foot, bike, and public transport, Calculate CO₂ savings, Earn Klima-Taler rewards, Redeem rewards for discounts and free entry, Sustainable living tips and ideas, City challenges and competitions, Map of sustainable places

**Features:** Vision Pro support

**In-app purchases:** none


### Four Shields

[App page](https://appshunter.io/ios/app/four-shields/id6808653307)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Four Shields Premium Monthly | $5.99 | per month |
| Four Shields Premium Annual | $44.99 | per year |


## Frequently asked questions

### Is Klima free?

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

### Is Four Shields free?

Four Shields is free to download, with in-app purchases available.

### Do Klima or Four Shields have ads?

Neither Klima nor Four Shields shows ads.

### Which is updated more often, Klima or Four Shields?

Klima ships an update every 4 weeks, and Four Shields every 4 days. Most recently, Klima was updated on October 30, 2026 and Four Shields on October 29, 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.*