Brain vs Cudex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Brain
This app offers a private audio practice designed to cultivate positive self-talk and transform beneficial thoughts into consistent actions. It features guided conversations and affirmation loops to aid in sleep and daytime use, with options for personalization and local storage of all your data.
- Two-voice conversation practice
- Overnight affirmation loops
- Customizable voice packs
- Record your own phrases
- Private journal for goal tracking
- Local data storage
Read full descriptionHide full description
Brain Shift trains your mind with looping audio affirmations built for real habits like quitting smoking or vaping, managing stress, and building confidence. Pick from 20+ voices or record your own phrases in your own voice. No account required - start right away, sign in only if you want to. Everything stays private on your phone. No ads. Try Brain Shift Plus free for 7 days. Terms of Use: https://www.apple.com/legal/internet-services/itunes/appstore/dev/stdeula/
Cudex
Read full descriptionHide full description
There's a monster in here. Your steps collect more. Cudex turns your daily walking into a collection of monsters. Walk with your phone. Collect your steps. Hatch something new. Cudex is free to use, with no ads. Cudex Pro adds more. HOW IT WORKS • Your iPhone already counts your steps with Apple Health • Tap Collect in the app to turn today's steps into XP • XP raises your level, and every level hatches a new monster into your collection Every 100 steps is 1 XP. Steps you don't collect by midnight are gone, so the daily tap is the habit. Up to three reminders a day help you collect before the day ends. FREE FOR EVERYONE • 60 monsters to find, one every level • Streaks, badges and quests to chase • A history calendar of every day you've walked • Outfits and places for your monster from the shop, bought with coins you earn by walking • Share cards for a great day or a new monster • A daily step goal you set yourself WALK WITH FRIENDS Add friends with a code and see who has walked the most today. Tap a friend to see their monster, their collection and their badges. Friends is optional. Nothing is shared until you turn it on, and you can stop sharing at any time. WHAT CUDEX PRO ADDS • 48 rare monsters to find • Home screen and lock screen widgets, so you can collect without opening the app • Apple Watch complications • Insights: trends, consistency, your week, goal days and the hours you walk • The full shop of outfits and places YOUR STEPS, YOUR CHOICE Cudex reads step counts from Apple Health. Your steps stay on your phone unless you turn on Friends, and then only the friends you add can see them SUBSCRIPTION Cudex Pro is available as a monthly or yearly subscription, or as a one-time Lifetime purchase. If a free trial is offered, it converts to a paid subscription unless you cancel before it ends. Payment is charged to your Apple ID at confirmation of purchase. A subscription renews automatically unless you cancel at least 24 hours before the end of the current period. Manage or cancel it in your Apple ID settings. Collect monsters. Keep walking. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://acris.ai/monster-steps/privacy
Screenshots
Verdict
The clearest difference is price: Cudex at Free against Brain's $39.99. Brain's advantage is iOS requirement (17.0 vs 26.5). On update cadence, ads, in-app purchases 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
Cudex is free to download; Brain costs $39.99 up front. Brain sells 3 in-app purchases, starting at $0.99 per month and Cudex sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 5 days. Both last shipped on October 1, 2026.
| Parameter | Brain | Cudex |
|---|---|---|
| Price | $39.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 days | Every 5 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 17.0 — better | 26.5 |
| Further details — not scored | ||
| Size | 895 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | ANTONINO COLOMBA | Siraj Hasanov |
In-app purchases
Brain
- Sound-a-tude Plus3 Days trial$0.991 Month
- Quit Smoking$49.99
- Calm & Control$49.99
Cudex
- Pro Month$4.991 Month
- Pro Year7 Days trial$29.991 Year
- Pro Lifetime$59.99









