# JouleBug vs Viro

The clearest difference is rating: Viro at 4.9 against JouleBug's 4.4. Viro also leads on review sentiment (100% vs 70%) and update cadence (weekly vs every 3 months). JouleBug's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, 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.

Viro holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 41 and 17 respectively. Written reviews point the same way: 70% of JouleBug's written reviews are positive against 100% of Viro's.

JouleBug ships an update every 3 months, Viro weekly. The most recent releases landed on September 18, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | JouleBug | Viro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (41 ratings)](https://appshunter.io/ios/app/joulebug-legacy/id391199306/reviews) | **[4.9 (17 ratings)](https://appshunter.io/ios/app/viro-climate-action/id6444683518/reviews)** |
| Number of ratings | **41** | 17 |
| Positive reviews | 70.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 70 MB | 126 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Cleanbit Systems, Inc.](https://appshunter.io/developer/391199309) | [Viro Climate Action, Inc](https://appshunter.io/developer/1656085487) |

## What reviewers say

### JouleBug

[App page](https://appshunter.io/ios/app/joulebug-legacy/id391199306)

This app is designed to enhance workplace experiences by fostering environmental and social stewardship through collective action. It offers tailored sustainability programs, tracks impact metrics, and encourages employee engagement through challenges and social interactions.

**Highlights:** Employee Engagement Hub, Tailored Sustainability Programs, Metrics for Impactful Insights, Inspirational Challenges, Dynamic Social Interactions

**Features:** macOS Compatibility

**In-app purchases:** none


### Viro

[App page](https://appshunter.io/ios/app/viro-climate-action/id6444683518)

Track your daily sustainable actions and measure your positive environmental impact. Connect with a community, maintain streaks, and earn rewards from eco-friendly brands. Reduce your carbon footprint and live a greener life.

**Highlights:** Set daily sustainable action goals, Measure carbon pollution reduction, Connect with like-minded community, Maintain daily streaks for motivation, Share environmental actions on social media, Earn rewards and discounts from brands

**In-app purchases:** none


## Frequently asked questions

### Is JouleBug free?

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

### Is Viro free?

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

### Which has better reviews, JouleBug or Viro?

Viro is rated higher. JouleBug averages 4.4 out of 5 from 41 ratings, while Viro averages 4.9 from 17 ratings.

### Do JouleBug or Viro have ads?

Viro shows ads; JouleBug does not.

### Which is updated more often, JouleBug or Viro?

JouleBug ships an update every 3 months, and Viro weekly. Most recently, JouleBug was updated on September 18, 2026 and Viro on June 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.*