# Kora Sustainability vs Viro

The clearest difference is rating: Viro at 4.9 against Kora Sustainability's 4.0. Viro also leads on in-app purchases (none vs 5) and review sentiment (100% vs 75%). Kora Sustainability's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Kora Sustainability sells 5 in-app purchases, starting at $1.99 per month. Viro asks for nothing beyond the download.

Viro holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: Viro has 17 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 75% of Kora Sustainability's written reviews are positive against 100% of Viro's.

Kora Sustainability ships an update fortnightly, Viro weekly. The most recent releases landed on September 19, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Kora Sustainability | Viro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (3 ratings)](https://appshunter.io/ios/app/kora-sustainability/id1483753003/reviews) | **[4.9 (17 ratings)](https://appshunter.io/ios/app/viro-climate-action/id6444683518/reviews)** |
| Number of ratings | 3 | **17** |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 108 MB | 126 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Kora Sustainability Solution SIA](https://appshunter.io/developer/1475239838) | [Viro Climate Action, Inc](https://appshunter.io/developer/1656085487) |

## What reviewers say

### Kora Sustainability

[App page](https://appshunter.io/ios/app/kora-sustainability/id1483753003)

Track your environmental impact by measuring sustainable lifestyle choices like mobility, energy use, and purchasing habits. Earn rewards for eco-friendly actions and reduce your carbon footprint through a combination of moral and financial incentives.

**Highlights:** Track sustainable lifestyle choices, Measure impact on the planet, Earn rewards for eco-friendly actions, Reduce CO2 emissions, Compare progress with goals and others, Integrates with Apple Health for steps and distance

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Adventurer monthly | $1.99 | per month |
| Sprout Offset Subscription | $3.99 | per month |
| Tree Offset Subscription | $7.99 | per month |
| Forest Offset Subscription | $15.99 | per month |
| Adventurer yearly | $39.99 | per year |


### 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 Kora Sustainability free?

Kora Sustainability is free to download, with in-app purchases available.

### Is Viro free?

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

### Which has better reviews, Kora Sustainability or Viro?

Viro is rated higher. Kora Sustainability averages 4.0 out of 5 from 3 ratings, while Viro averages 4.9 from 17 ratings.

### Do Kora Sustainability or Viro have ads?

Viro shows ads; Kora Sustainability does not.

### Which is updated more often, Kora Sustainability or Viro?

Kora Sustainability ships an update fortnightly, and Viro weekly. Most recently, Kora Sustainability was updated on September 19, 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.*