# Vivara vs SYSTEM JJ

The clearest difference is in-app purchases: SYSTEM JJ at none against Vivara's 1. SYSTEM JJ also leads on device support (3 vs 1). Vivara's advantage is ratings volume (9 vs 3). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Vivara sells 1 in-app purchase, starting at $6.99 per month. SYSTEM JJ asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Vivara against 5.0 for SYSTEM JJ. Both are backed by a comparable volume of ratings — 9 and 3 respectively.

Vivara ships an update every 5 days, SYSTEM JJ every 3 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Vivara | SYSTEM JJ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (9 ratings)](https://appshunter.io/ios/app/vivara/id6759578335/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/system-jj/id6760544977/reviews) |
| Number of ratings | **9** | 3 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Monetization | Freemium | **Free** |
| Size | 115 MB | 194 MB |
| Requires iOS | 16.2 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Joao Melo](https://appshunter.io/developer/1879611046) | [Nicholas Hession-Kugelman](https://appshunter.io/developer/1884887934) |

## What reviewers say

### 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 |


### SYSTEM JJ

[App page](https://appshunter.io/ios/app/system-jj/id6760544977)

This training companion helps you master jiu-jitsu by capturing session intentions and feedback. Record audio and video notes, utilize templates, and get AI coaching within the app.

**Highlights:** Capture training session intentions, Record audio notes, Record video notes, Utilize templates, AI coach integration

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

**In-app purchases:** none


## Frequently asked questions

### Is Vivara free?

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

### Is SYSTEM JJ free?

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

### Which has better reviews, Vivara or SYSTEM JJ?

Vivara and SYSTEM JJ are both rated 5.0 out of 5 on the App Store, from 9 and 3 ratings respectively.

### Do Vivara or SYSTEM JJ have ads?

Neither Vivara nor SYSTEM JJ shows ads.

### Which is updated more often, Vivara or SYSTEM JJ?

Vivara ships an update every 5 days, and SYSTEM JJ every 3 days. Most recently, Vivara was updated on October 24, 2026 and SYSTEM JJ on October 24, 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.*