# KOR (Keep On Rolling) vs Vivara

The clearest difference is in-app purchases: KOR (Keep On Rolling) at none against Vivara's 1. KOR (Keep On Rolling) also leads on device support (3 vs 1). Vivara's advantage is update cadence (every 5 days vs monthly) and ratings volume (9 vs 2). On price, rating, ads and iOS requirement there is nothing between them.

Both are free to download. Vivara sells 1 in-app purchase, starting at $6.99 per month. KOR (Keep On Rolling) asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for KOR (Keep On Rolling) against 5.0 for Vivara. Both are backed by a comparable volume of ratings — 2 and 9 respectively.

KOR (Keep On Rolling) ships an update monthly, Vivara every 5 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | KOR (Keep On Rolling) | Vivara |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/kor-keep-on-rolling/id1599601993/reviews) | [5.0 (9 ratings)](https://appshunter.io/ios/app/vivara/id6759578335/reviews) |
| Number of ratings | 2 | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | **Free** | Freemium |
| Size | 87 MB | 115 MB |
| Requires iOS | **15.1** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mason Tuft](https://appshunter.io/developer/1599601995) | [Joao Melo](https://appshunter.io/developer/1879611046) |

## What reviewers say

### KOR (Keep On Rolling)

[App page](https://appshunter.io/ios/app/kor-keep-on-rolling/id1599601993)

This app uses complex algorithms to calculate wear and tear on your bicycle based on logged mileage from Strava. It's available for free to users who patronize participating shops.

**Highlights:** Bike wear and tear calculation, Strava integration, Mileage logging, Free for users of participating shops

**Features:** macOS Compatibility

**In-app purchases:** none


### Vivara

[App page](https://appshunter.io/ios/app/vivara/id6759578335)

This app dynamically adjusts your calorie and macro targets based on your daily activity and exercise science. It offers trusted workout calorie estimates, a comprehensive dashboard, and flexible food logging. Connect with friends for added accountability and motivation.

**Highlights:** Dynamic calorie and macro goals, Trusted workout calorie estimates, Comprehensive Today dashboard, Flexible food logging, Set-by-set strength logging, Social features for accountability

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vivara Premium | $6.99 | per month |


## Frequently asked questions

### Is KOR (Keep On Rolling) free?

KOR (Keep On Rolling) is free to download, with no in-app purchases.

### Is Vivara free?

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

### Which has better reviews, KOR (Keep On Rolling) or Vivara?

KOR (Keep On Rolling) and Vivara are both rated 5.0 out of 5 on the App Store, from 2 and 9 ratings respectively.

### Do KOR (Keep On Rolling) or Vivara have ads?

Neither KOR (Keep On Rolling) nor Vivara shows ads.

### Which is updated more often, KOR (Keep On Rolling) or Vivara?

KOR (Keep On Rolling) ships an update monthly, and Vivara every 5 days. Most recently, KOR (Keep On Rolling) was updated on October 24, 2026 and Vivara on October 28, 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.*