Comparison

ThunDroid AI vs Vein

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

Head to head
About

ThunDroid AI

This app offers AI-powered mental wellness support, integrating CBT, DBT, and ACT therapy frameworks. It features guided breathing exercises, an intelligent journal, and a live voice mode for real-time interaction, all designed to help manage stress and emotions.

Highlights
  • AI-powered CBT, DBT, ACT therapy frameworks
  • Stanford-validated cyclic sighing stress reset
  • 13 guided breathing techniques
  • Live voice mode for AI interaction
  • Intelligent journal with 15 templates
  • On-device AES-256 encryption for privacy
Features
Read full description

ThunDroid AI is your personal intelligence. It is an AI companion for feelings and ordinary days: talk when you need someone, write when you need to see a pattern, and breathe when your body is ahead of you. TALK Speak in Live Voice, or type. ThunDroid draws on CBT, DBT, and ACT, three approaches used in therapy, and stays with what you have already said. It is a companion for the moments between sessions. It does not replace a clinician. JOURNAL Fifteen guided templates, including a CBT thought record, a DBT diary card, gratitude, sleep, and goals, plus mood, streaks, and history. Journal entries are encrypted on your device with AES-256-GCM. BREATHE Thirteen guided techniques, including cyclic sighing, the exercise a Stanford study found reduced anxiety faster than mindfulness meditation, plus box breathing, 4-7-8, resonance, alternate nostril, and the Wim Hof method. Visual guides and haptic cues. Breathing works offline. PRIVACY Chat is sent over a secure connection to ThunDroid’s servers so the companion can respond. Your journal is different: it stays on your device, protected with AES-256-GCM. ThunDroid does not sell your journal or your conversations. Start with 3 days free. Full access. Cancel anytime. Privacy Policy: https://aetherrax.com/privacy-policy-aetherrax-technologies/ Terms of Use: https://aetherrax.com/terms-of-service-aetherrax-technologies/

About

Vein

Features
Read full description

Most habit apps count your days. Vein grows with them. Commit to a 7, 14, 21, or 30-day challenge and watch something organic begin to form β€” a living visual that deepens with every check-in. Not a streak. A commitment. Something real is at stake. Vein is built on a single truth: habits aren't tasks. They're the slow growth of something biological β€” invisible beneath the surface, until the day they're undeniably part of you. The vein canvas is that truth, made visible. There are no points. No levels. No reminders that shame you for being human. Just the quiet accumulation of days, and the thing that grew from them. COMMIT, DON'T JUST TRACK Choose a 7, 14, 21, or 30-day challenge. A beginning, middle, and end β€” the structure of a real promise. WATCH IT GROW An organic vein deepens with every check-in. Your visual evidence. Impossible to fake, impossible to ignore. DARK BY DESIGN Built for the daily ritual, not the daily dashboard. A screen worth opening every day. NO STREAK ANXIETY Miss a day. The vein pauses. It never dies. Consistency over perfection β€” always. SHARE WHEN IT'S EARNED At 50%, your Milestone Insight is ready to export. One quiet, honest moment. Grow quietly. The results speak for themselves.

Screenshots

ThunDroid AI4 screens
Vein4 screens

Verdict

The call

The clearest difference is in-app purchases: Vein at none against ThunDroid AI's 1. Vein also leads on update cadence (every 4 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. ThunDroid AI sells 1 in-app purchase, starting at $12.99 per month. Vein asks for nothing beyond the download.

UpkeepUpdate frequency

ThunDroid AI ships an update every 2 weeks, Vein every 4 days. The most recent releases landed on November 5, 2026 and November 11, 2026 respectively.

Scorecard2 real differences Β· 5 level
ThunDroid AI versus Vein: the parameters behind the verdict, then further details
ParameterThunDroid AIVein
PriceFreeFree
Update frequencyEvery 2 weeksEvery 4 days β€” better
AdsNoNo
In-app purchasesYesNo β€” better
MonetizationFreemiumβ€”
DevicesiPhoneiPhone
Requires iOS17.617.0 β€” better
Further details β€” not scored
Size32 MB9 MB
Age rating17+4+
DeveloperAetherrax TechnologiesBaran Gungor

In-app purchases

1 purchases

ThunDroid AI

Subscriptions1
  • ThunDroid Membership3 Days trial$12.991 Month
None

Vein

No in-app purchases

Questions

Is ThunDroid AI free?
ThunDroid AI is free to download, with in-app purchases available.
Is Vein free?
Vein is free to download, with no in-app purchases.
Do ThunDroid AI or Vein have ads?
Neither ThunDroid AI nor Vein shows ads.
Which is updated more often, ThunDroid AI or Vein?
ThunDroid AI ships an update every 2 weeks, and Vein every 4 days. Most recently, ThunDroid AI was updated on November 5, 2026 and Vein on November 11, 2026.

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