Bernie vs Thirsty Day
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bernie
This app provides a psychological AI companion to help you process overthinking. Engage in conversations, track your patterns, and monitor your progress towards better wellbeing. It's designed for adults seeking a reflective tool for everyday mental health.
- AI-powered psychological support
- Conversational interaction
- Overthinking pattern tracking
- Progress measurement
- Personalized AI profiles
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Built by psychologists so you can learn psychology the playful way. Simply talk about your own topics and discover 78 concepts from ACT and behavioral psychology, from the Rumination Trap to the Stress Response. Each one lands in your personal Psychology Library, with your own example. Text or call Bernie, your AI companion, about anything on your mind. He explains in plain words what is going on in your head, names the psychology behind it and suggests one small thing to try. Prefer talking to typing? Just call Bernie! He picks up and talks it through with you, in your language. Whether it is procrastination, decisions, relationships or why your brain does what it does: with Bernie you understand yourself better, step by step. Why Mindflex? • Mindflex is effective and fun. Short conversations, XP for every real step and lovable characters (Bernie, Bonnie, Bernhardt and Bernadette) keep you coming back. • Mindflex is grounded in science. The concepts come from established psychological research, such as acceptance and commitment approaches and cognitive behavioral psychology. Every card in the library names the research behind it. • Level up 7 mental skills. On your Flex Map, Notice, Allow, Shift, Regulate, Choose, Connect and Move grow as soon as you actually try something. • Stay motivated. Collect XP, level up and unlock new outfits for Bernie and his family. • Keep your streak. Daily reminders bring you back to your next lesson, even on your Apple Watch. • Your conversations stay private. They are stored under a random ID, not under your name. We never sell your data, and you can delete everything at any time. What our users say: "It's somehow impressive how much understanding Mindflex sometimes shows. It feels good to get answers this fast and this fitting." – Mindflex user "Mindflex is my AI companion for everyday life. It supports me in sorting my thoughts and feelings, without judging." – Mindflex user "Just try it. Bring up a topic and let the conversation take its course." – Mindflex user If you like Mindflex, try Mindflex Pro for free! With Pro you get unlimited conversations, calls with Bernie and the complete Psychology Library. If you choose to purchase Mindflex Pro, payment will be charged to your Apple ID account at confirmation of purchase. The subscription automatically renews unless it is canceled 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. You can manage and cancel your subscriptions in your App Store account settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription. Note: Mindflex is an educational app about psychology. It is not therapy and does not replace a licensed professional, a diagnosis or medical treatment. Bernie, Bonnie, Bernhardt and Bernadette are AI characters, their images are AI-generated. If you are in a crisis, please call your local emergency number (in the US, call or text 988). Mindflex is for adults 18+. Privacy Policy: https://mindflex.world/privacy Terms of Use: https://mindflex.world/terms
Thirsty Day
Track your daily fluid intake with a charming animal companion. Log various drinks, set personalized goals, and receive optional reminders. Sync with Apple Health and enjoy features across iPhone, iPad, and Apple Watch.
- Log water, coffee, tea, and other drinks
- Track total fluids, plain water, and caffeine
- Set custom daily hydration goals
- Receive optional reminders and use widgets
- Interactive animal companions
- Apple Watch quick logging
- Sync with Apple Health
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A little company for every sip. Thirsty Day makes it easy to keep track of your drinks, get to know your daily rhythm and enjoy a little animal company along the way. LOG YOUR DAY, YOUR WAY • Quick-add water or log coffee, tea and other drinks • See total fluids, plain water and caffeine separately • Edit caffeine estimates to match your label, including zero • Set your own daily goal in ounces or milliliters • Use optional reminders and Home Screen widgets YOU AND YOUR COMPANION See today's drinks alongside your animal's playful scale while keeping your own goal. Daily animal amounts are rough illustrations, not drinking targets. Some companions offer water facts rather than a volume comparison; Mythic scales are fictional. Say hello to your companion and swipe through hydration and animal facts with source links. Explore the field guide and save favorites. WITH YOU THROUGH THE DAY • Quick-log water from your Apple Watch for the profile shown on your paired iPhone • Enjoy roomy iPad layouts or keep things close on either iPhone Duo display • Use portrait, landscape or a smaller iPad window Watch drinks are saved when your phone is out of reach and transferred when it reconnects. Watch logging and iPad support are included in the core app. Apple Watch needs a paired iPhone with Thirsty Day. Your iPhone and iPad keep separate local journals; they do not automatically sync drink history. COMPANY YOU CAN KEEP Start with Otter. Earn Cat, Dog, Fox and Lion through logging streaks. Household profiles, kids' manual goals, facts and basic tracking remain available without Pro. Kids never receive adult activity or heat adjustments. Optional iCloud Squad Sync shares daily progress with friends you add. THIRSTY PRO Give your day a companion you love and a water estimate that can adapt to local weather and available activity. Monthly and yearly plans include classic and wildlife companions, 18 matching stickers to copy or share, and adaptive goal guidance. See how feels-like temperature, humidity and available Apple Health activity contribute to the estimate, and choose which inputs to enable. Weather and Health permissions are optional. Both plans provide the same Pro features. In the U.S.: $1.99/month or $9.99/year. Local prices and terms are shown before purchase. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Payment is charged to your Apple Account at confirmation. Manage or cancel in your App Store account settings. Already own lifetime Pro? Your access stays yours; no subscription is required for those features. Eligible early-supporter rights, the four wildlife companions granted before version 3.1, earned companions and individual purchases are preserved. Restore purchases to recover verified access. Mythic Creatures remains a separate optional one-time collection; individual companion purchases remain available. QUIET AND PRIVATE No ads. Basic Apple Health water syncing and available health metrics stay in the core app with your permission. Only plain, caffeine-free water—including unflavored sparkling water—can be written to Health; other drink details and caffeine remain in your local log. Health data is never sold. Weather uses approximate location with permission. Hydration and caffeine amounts are estimates, not medical advice. Follow your clinician's guidance, especially for fluid restrictions. Privacy: https://apps-privacy-stable.imaginary-grey.workers.dev/thirsty-privacy Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Made thoughtfully by House Rhymaun.
Screenshots
Verdict
The clearest difference is ads: Thirsty Day at none against Bernie's shown. Thirsty Day also leads on update cadence (daily vs every 10 days). Bernie's advantage is ratings volume (6 vs 2) and iOS requirement (15.1 vs 17.0). On price, rating, 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
Both are free to download. Bernie sells 7 in-app purchases, starting at $19.99 per month and Thirsty Day sells 10 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Bernie against 5.0 for Thirsty Day. Both are backed by a comparable volume of ratings — 6 and 2 respectively.
Bernie ships an update every 10 days, Thirsty Day daily. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | Bernie | Thirsty Day |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) | 5.0 (2 ratings) |
| Positive reviews | 91.7% of reviews | — |
| Number of ratings | 6 — better | 2 |
| Update frequency | Every 10 days | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 152 MB | 65 MB |
| Age rating | 17+ | 4+ |
| Developer | Mindflex UG | Marc Rhymaun |
Customer experience
Bernie
Thirsty Day
In-app purchases
Bernie
- Mindflex Pro Monthly1 Month trial2 variants$19.991 Month
- Pro Monthly$19.991 Month
- Mindflex Pro 6 Months$59.996 Months
Show 4 moreShow fewer
- Mindflex Pro (Yearly)$99.991 Year
- Pro Yearly7 Days trial$119.991 Year
- Pro Yearly1 Month trial$119.991 Year
- Pro Yearly14 Days trial$119.991 Year
Thirsty Day
- Thirsty Pro Monthly$1.991 Month
- Thirsty Pro Yearly$9.991 Year
- Fox$0.99
- Tiger$0.99
- Elephant$0.99
Show 5 moreShow fewer
- Golden Mossback$0.99
- Whale$0.99
- Orbit Sprite$0.99
- Emberwing$0.99
- Moonhorn$0.99









