# eevie vs Net Zero Challenge

The clearest difference is update cadence: eevie at every 2 weeks against Net Zero Challenge's every 2 months. eevie also leads on 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.

eevie ships an update every 2 weeks, Net Zero Challenge every 2 months. The most recent releases landed on June 11, 2026 and August 4, 2026 respectively.

## The numbers

| Metric | eevie | Net Zero Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (15 ratings)](https://appshunter.io/ios/app/eevie/id1365185910/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 60.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 67 MB | 55 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Humbldt](https://appshunter.io/developer/1365185909) | [Green Rewards Ltd](https://appshunter.io/developer/909021443) |

## What reviewers say

### eevie

[App page](https://appshunter.io/ios/app/eevie/id1365185910)

This app helps companies engage employees in sustainability initiatives. It educates staff on climate topics, facilitates custom campaigns, and fosters a sustainable workplace culture through educational journeys, challenges, and team collaboration.

**Highlights:** Employee climate education, Custom campaign creation, Sustainable workplace culture, Streaks and progress tracking, Team competition and collaboration, Sustainability mindset building

**Features:** Apple Wallet

**In-app purchases:** none


### Net Zero Challenge

[App page](https://appshunter.io/ios/app/net-zero-challenge/id1541830052)

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

**In-app purchases:** none


## Frequently asked questions

### Is eevie free?

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

### Is Net Zero Challenge free?

Net Zero Challenge is free to download, with no in-app purchases.

### Do eevie or Net Zero Challenge have ads?

Neither eevie nor Net Zero Challenge shows ads.

### Which is updated more often, eevie or Net Zero Challenge?

eevie ships an update every 2 weeks, and Net Zero Challenge every 2 months. Most recently, eevie was updated on June 11, 2026 and Net Zero Challenge on August 4, 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.*