Comparison

Kora Sustainability vs Viro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Kora Sustainability

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
Read full description

Kora app will help you to track your impact on the planet through measuring sustainable lifestyle choices including mobility, energy and purchasing behaviour. Kora also rewards sustainable behaviour of its users. This way CO2 emissions are reduced combining both moral and financial motivation. Kora helps you to better understand the effects of your choices so that you can make more informed decisions and learn about how you can make daily choices towards sustainability. You can then compare your progress with your own personal carbon saving goals, with your friends and with the collective action of your region or country. Share our mission with others so that we can work together to take responsible climate action. Kora app integrates with the Health app. Kora uses the Health App to user get steps count and walking distance. Kora rewards contest rules: Kora rewards are the prizes available to Kora app users who earn the required amount of Kora points and redeem them in Kora built-in marketplace. There is a limited quantity of each prize item available in the marketplace and it is specified for each item. The items are served on the first came - first served basis. Those users of Kora app, that earn the necessary amount of points first will be able to be first to redeem their Koras for the rewards available. Items in Kora marketplace are provided by Kora itself and our Partners/Sponsors. Apple is not a sponsor of the items available as Kora rewards. More information on rewards and rules of how Koras are being earned is available at https://kora.app/howitworks Premium Membership details: You can buy the Offset program via in–app purchases within the app. We provide 3 monthly offsetting programs - Sprout, Tree and Forest. If you opt for the subscription, you pay the fixed price for your country which is displayed in the app. Payment will be charged to your iTunes Account at confirmation of purchase. Subscriptions will automatically renew at the end of the period. You can turn off the auto-renewal at any time up until 24-hours before the end of the subscription period in your Account Settings in iTunes after purchase. It is not possible to refund a subscription or cancel a subscription during the current period. When you cancel the auto-renewal, access to the offset features will not expire immediately, you will have access until the end of the current payment period. Do you have further questions about app? Contact us via email: hello@kora.app Terms of Use: https://www.kora.app/terms Privacy Policy: https://www.kora.app/privacy EULA: https://www.kora.app/terms

About

Viro

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
Read full description

Live sustainably and make the earth a better place. Take climate action by measuring your positive environmental impact & putting an end to carbon footprint guilt. + SET A DAILY GOAL Choose how many positive actions you will complete each day to close the activity ring. + MEASURE YOUR IMPACT Carbon pollution reduction metrics are provided by the Environmental Protection Agency (EPA). + JOIN THE COMMUNITY Find new friends and connect with like-minded groups. + STAY MOTIVATED WITH STREAKS Close your activity ring to continue daily streaks. + SHARE TO SOCIALS Take photos of your action and easily post your carbon pollution reduction on social media. + BE REWARDED Earn discounts, free products, and exclusive bundles from sustainable brands that value your environmental action. Thanks for downloading :) ** Amazon Hackathon International Winner 2022 ** ** United Nations Association Member ** Want to reach out? DM us on Instagram @viro.app or email nick@viro.app

Screenshots

Kora Sustainability4 screens
Viro4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard7 real differences · 3 level
Kora Sustainability versus Viro: the parameters behind the verdict, then further details
ParameterKora SustainabilityViro
PriceFreeFree
Rating4.0 (3 ratings)4.9 (17 ratings) — better
Positive reviews75.0% of reviews100.0% of reviews — better
Number of ratings317 — better
Update frequencyFortnightlyWeekly — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.112.0 — better
Further details — not scored
Size108 MB126 MB
Age rating12+4+
DeveloperKora Sustainability Solution SIAViro Climate Action, Inc

Customer experience

Kora Sustainability

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Viro

All ratings17 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews10 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

5 purchases

Kora Sustainability

Subscriptions5
  • Adventurer monthly$1.991 Month
  • Sprout Offset Subscription$3.991 Month
  • Tree Offset Subscription$7.991 Month
Show 2 more
  • Forest Offset Subscription$15.991 Month
  • Adventurer yearly$39.991 Year
None

Viro

No in-app purchases

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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