Comparison

Brain vs Cudex

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

Head to head
About

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.

Highlights
  • Two-voice conversation practice
  • Overnight affirmation loops
  • Customizable voice packs
  • Record your own phrases
  • Private journal for goal tracking
  • Local data storage
Features
Read 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/

About

Cudex

Features
Read 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

Brain4 screens
Cudex4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 days. Both last shipped on October 1, 2026.

Scorecard2 real differences · 7 level
Brain versus Cudex: the parameters behind the verdict, then further details
ParameterBrainCudex
Price$39.99Free — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 5 daysEvery 5 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS17.0 — better26.5
Further details — not scored
Size895 MB29 MB
Age rating4+4+
DeveloperANTONINO COLOMBASiraj Hasanov

In-app purchases

3 purchases

Brain

Subscriptions1
  • Sound-a-tude Plus3 Days trial$0.991 Month
One-time2
  • Quit Smoking$49.99
  • Calm & Control$49.99
3 purchases

Cudex

Subscriptions2
  • Pro Month$4.991 Month
  • Pro Year7 Days trial$29.991 Year
One-time1
  • Pro Lifetime$59.99

Questions

Is Brain free?
Brain costs $39.99, and also offers in-app purchases.
Is Cudex free?
Cudex is free to download, with in-app purchases available.
Do Brain or Cudex have ads?
Neither Brain nor Cudex shows ads.
Which is updated more often, Brain or Cudex?
Brain ships an update every 5 days, and Cudex every 5 days. Most recently, Brain was updated on October 1, 2026 and Cudex on October 1, 2026.

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