Comparison

ThunDroid AI vs Winnow

Price, ratings, monetisation and update history for both apps, side by side — 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

Winnow

This app helps you understand and manage your thoughts using Cognitive Behavioral Therapy (CBT) techniques. Engage in daily practice, guided thought records, and mood tracking to improve your mental well-being. Share insights with your therapist or reflect on your progress privately.

Highlights
  • Daily CBT practice lessons
  • Guided 7-step thought records
  • Quick mood check-ins
  • Journal and reflection tools
  • PDF export for therapists
  • Mood and distortion insights
  • Personalized safety plan
Features
Read full description

Winnow helps you separate helpful thoughts from harmful ones using Cognitive Behavioral Therapy (CBT). Practice the skill for 2 minutes a day, then use it when a hard moment comes. DAILY CBT PRACTICE (NEW) A short lesson each day: five cards, about two minutes, no typing. Follow Linnet the finch through everyday moments, spot the thinking trap, and pick the more balanced thought. Each skill grows from New to Strong as you practice, and the ones you find tricky come back sooner. Free for everyone. GUIDED THOUGHT RECORDS Walk through a structured 7-step CBT thought record whenever anxious or negative thoughts arise. Identify the situation, capture your emotions, examine automatic thoughts, spot cognitive distortions, and reframe your thinking with balanced alternatives. QUICK MOOD CHECK-INS Log how you're feeling in seconds. Choose from 27 emotions, rate their intensity, and build a picture of your emotional patterns over time. JOURNAL & REFLECT Review all your entries in one place. Filter by drafts, completed records, or recent entries. Revisit past situations to see how your thinking has evolved. SHARE WITH YOUR THERAPIST Create a clean PDF summary of your entries and practice progress, and send it to your therapist or anyone you choose. INSIGHTS & TRENDS Track your mood trends over weeks, months, or the full year. See your most frequent emotions, identify recurring cognitive distortions, and understand your patterns with clear charts and summaries. SAFETY PLAN Create a personalized crisis safety plan with coping strategies, trusted contacts, and professional resources — always accessible when you need it most. PRIVATE & SECURE All your data stays on your device. No account required. No cloud sync. Your thoughts are yours alone. WINNOW PRO Upgrade for unlimited CSV and PDF exports, full trend analysis across all time periods, AI-powered distortion detection, advanced distortion breakdowns, and more. Whether you're working with a therapist or managing your mental health independently, Winnow gives you a structured, private space to practice CBT every day. SUBSCRIPTION INFORMATION Winnow Pro Monthly — $4.99/month Winnow Pro Annual — $39.99/year Payment will be charged to your Apple ID at confirmation of purchase. Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Manage or cancel your subscription in your App Store account settings at any time. Privacy Policy: https://psyfitechnologies.com/winnow/privacy-policy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ThunDroid AI4 screens
Winnow4 screens

Verdict

The call

The clearest difference is update cadence: ThunDroid AI at every 2 weeks against Winnow's every 6 weeks. Winnow's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.6). On price, ads, in-app purchases and monetization model 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

Both are free to download. ThunDroid AI sells 1 in-app purchase, starting at $12.99 per month and Winnow sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ThunDroid AI ships an update every 2 weeks, Winnow every 6 weeks. Both last shipped on November 5, 2026.

Scorecard3 real differences · 6 level
ThunDroid AI versus Winnow: the parameters behind the verdict, then further details
ParameterThunDroid AIWinnow
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 2 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.615.1 — better
Further details — not scored
Size32 MB48 MB
Age rating17+4+
DeveloperAetherrax TechnologiesPsyFi Technologies

Customer experience

ThunDroid AI

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

Winnow

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

ThunDroid AI

Subscriptions1
  • ThunDroid Membership3 Days trial$12.991 Month
2 purchases

Winnow

Subscriptions2
  • Winnow Pro Monthly$4.991 Month
  • Winnow Pro Annual7 Days trial$39.991 Year

Questions

Is ThunDroid AI free?
ThunDroid AI is free to download, with in-app purchases available.
Is Winnow free?
Winnow is free to download, with in-app purchases available.
Do ThunDroid AI or Winnow have ads?
Neither ThunDroid AI nor Winnow shows ads.
Which is updated more often, ThunDroid AI or Winnow?
ThunDroid AI ships an update every 2 weeks, and Winnow every 6 weeks. Most recently, ThunDroid AI was updated on November 5, 2026 and Winnow on November 5, 2026.

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