# Viro vs CatDex

The clearest difference is price: Viro at Free against CatDex's $1.99. Viro also leads on ratings volume (303 vs 1) and update cadence (every 8 days vs every 3 weeks). CatDex's advantage is in-app purchases (none vs 8). On rating, ads, device support and iOS requirement there is nothing between them.

Viro is free to download; CatDex costs $1.99 up front. Viro sells 8 in-app purchases, starting at $0.99 per month. CatDex asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Viro against 5.0 for CatDex. That said, the two scores are not equally well evidenced: Viro has 303 ratings behind it against 1, so its average is the more settled of the two.

Viro ships an update every 8 days, CatDex every 3 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Viro | CatDex |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.9 (303 ratings)](https://appshunter.io/ios/app/viro-eco-friendly-ai/id6747270877/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/catdex/id6763668527/reviews)** |
| Number of ratings | **303** | 1 |
| Positive reviews | 89.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 3 weeks |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 76 MB | 33 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Viro Climate Action, Inc](https://appshunter.io/developer/1656085487) | [Brendan Pan](https://appshunter.io/developer/1895428119) |

## What reviewers say

### Viro

[App page](https://appshunter.io/ios/app/viro-eco-friendly-ai/id6747270877)

Engage in unlimited AI conversations powered by clean energy. Access top AI models, create custom personas, and connect your favorite apps. Every chat supports climate initiatives.

**Highlights:** Unlimited AI chat, Switch between AI models, Create custom AI personas, Connect to popular apps, Generate images and analyze documents, Supports clean energy initiatives

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Viro AI Premium (Monthly) | $0.99 | per month |
| Viro AI Monthly | $4.99 | per month |
| Viro AI Supercharged (Monthly) | $9.99 | per month |
| Viro AI Premium (Annual) | $9.99 | per year |
| Viro AI Supercharged Monthly | $12.99 | per month |
| Viro AI Annual | $49.99 | per year |
| Viro AI Supercharged (Annual) | $99.99 | per year |
| Viro AI Supercharged Annual | $129.99 | per year |


### CatDex

[App page](https://appshunter.io/ios/app/catdex/id6763668527)

Identify cat breeds from photos and build a personal collection. Discover breed information, track your sightings, and test your knowledge with daily quizzes. Earn badges for your achievements.

**Highlights:** Identify cat breeds from photos, Build a personal cat collection, Discover breed information and fun facts, Log cat sightings with details, Daily breed quizzes, Earn badges and milestones

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

**In-app purchases:** none


## Frequently asked questions

### Is Viro free?

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

### Is CatDex free?

CatDex costs $1.99, with no in-app purchases.

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

CatDex is rated higher. Viro averages 4.9 out of 5 from 303 ratings, while CatDex averages 5.0 from 1 ratings.

### Do Viro or CatDex have ads?

Neither Viro nor CatDex shows ads.

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

Viro ships an update every 8 days, and CatDex every 3 weeks. Most recently, Viro was updated on November 5, 2026 and CatDex on October 31, 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.*