Comparison

Viro vs CatDex

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

Head to head
About

Viro

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
Read full description

Viro is a free AI chat app powered by clean energy. Ask anything, get answers from the world's best AI models, and help fund clean energy while you do it. No subscription required. No payment info. No data selling. WHY VIRO AI - Free unlimited AI chat — no credit card, no trial, no message caps - Switch between top AI models in a single app, mid-conversation - Create AI characters and chat with custom Personas - Connect your favorite apps — Google Drive, Calendar, Tasks, Notion, Slack, and Outlook - Generate images, search the live web, and analyze photos and documents - Every chat supports clean energy and ocean cleanup - Your conversations stay private and are never sold to advertisers WHAT YOU CAN DO Write and edit — emails, essays, cover letters, resumes, social posts Learn and study — homework help, math problems, concept explanations Translate and summarize — any language, any article, any document Create images — turn a description into original artwork Search the web — real-time answers with sources, not stale training data Ask anything — coding help, recipes, travel plans, business advice CHAT WITH PERSONAS Build your own AI characters and give them a name, a personality, and a purpose. Make a patient coding tutor, a blunt business advisor, a dungeon master, a language partner who only replies in Spanish, or a character entirely of your own invention. Save your Personas and pick up the conversation whenever you want. CONNECT YOUR FAVORITE APPS Viro works with the tools you already use. Connect Google Drive, Google Calendar, Google Tasks, Notion, Slack, and Outlook, then ask Viro to pull up a document, check your schedule, summarize a thread, or draft your next email — without leaving the chat. HOW THE CLIMATE PART ACTUALLY WORKS Most AI apps charge you $20 a month and quietly run on fossil-fueled data centers. Viro is free, supported by ads, and the profits go toward matching AI usage with renewable energy and funding climate restoration — including our support for The Ocean Cleanup. We also route every question to the most efficient model that can answer it well, instead of sending everything to the largest model available. That uses dramatically less energy for the same quality answer. And we measure it. Our energy methodology is published and built on real production data from millions of actual queries — not estimates, not marketing math. No other AI app will show you those numbers, because no other AI app wants you to see them. You don't have to change your habits or sacrifice anything. You just have to pick a different AI app. PRIVACY Your conversations belong to you. We don't sell your data, and we don't use your conversations to train AI models. Join 100,000+ people choosing AI that doesn't wreck the planet. ---------- APP PERMISSIONS Camera: capture photos to add to AI chat Photos / Media / Files: upload images and documents from your device ---------- SUPPORT Questions or feedback? Email us anytime: nick@viro.app ---------- LEGAL Terms of Use: https://www.viro.app/terms-conditions-viro-ai Privacy Policy: https://www.viro.app/privacy-policy-viro-ai

About

CatDex

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
Read full description

Every cat you meet is a discovery waiting to happen. CatDex turns cat-spotting into a cozy collecting game: snap a cat, find out what breed it is, and build a collection that's entirely yours. SNAP ANY CAT Take a photo or pick one from your library. CatDex shows the three closest breeds with confidence scores, what gave it away (the ears, the coat, the eyes), and a fun fact. MIXED BREEDS COUNT TOO Most cats are wonderful mixes. CatDex says so honestly, logs them as Domestic Shorthair, Mediumhair or Longhair, and tells you which breeds they take after. COLLECT ALL 106 BREEDS From the everyday Maine Coon to the legendary Kellas Cat, every breed has a rarity: Common, Uncommon, Rare or Legendary. Rarer finds are worth more points. YOUR PHOTO JOURNAL Your own photo becomes the breed's card. Give each cat a name, jot down where you met, and look back on every sighting. DAILY BREED QUIZ Five new questions every day. Build a streak, share your score, and keep practicing as long as you like. BREED OF THE DAY Learn about a new breed every morning, with its history, personality, size and lifespan. BADGES & MILESTONES Earn badges for discoveries, rare finds, collecting breeds from around the world, and quiz streaks. Works offline for browsing. Your collection stays on your device.

Screenshots

Viro4 screens
CatDex4 screens

Verdict

The call

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.

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

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Viro versus CatDex: the parameters behind the verdict, then further details
ParameterViroCatDex
PriceFree — better$1.99
Rating4.9 (303 ratings)5.0 (1 ratings) — better
Positive reviews89.1% of reviews—
Number of ratings303 — better1
Update frequencyEvery 8 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size76 MB33 MB
Age rating4+4+
DeveloperViro Climate Action, IncBrendan Pan

In-app purchases

8 purchases

Viro

Subscriptions8
  • Viro AI Premium (Monthly)$0.991 Month
  • Viro AI Monthly$4.991 Month
  • Viro AI Supercharged (Monthly)$9.991 Month
Show 5 more
  • Viro AI Premium (Annual)$9.991 Year
  • Viro AI Supercharged Monthly$12.991 Month
  • Viro AI Annual$49.991 Year
  • Viro AI Supercharged (Annual)$99.991 Year
  • Viro AI Supercharged Annual$129.991 Year
None

CatDex

No in-app purchases

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.

Other comparisons