PolarUs vs DrowZe
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PolarUs
This app helps individuals manage bipolar disorder by tracking quality of life and offering science-based wellness strategies. It provides daily, weekly, and monthly check-ins across various life areas to support balance and well-being.
- Science-informed strategies for bipolar disorder
- Track progress and quality of life
- Learn new skills and practice strategies
- Access curated resource lists
- Daily, weekly, and monthly check-ins
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Learn new ways to live with bipolar disorder. PolarUs is made in collaboration with people living with bipolar disorder to help you monitor your quality of life and use science-based strategies to live well with bipolar disorder. With just a few minutes a day, PolarUs offers support for achieving balance in your life while managing bipolar disorder. We’ve developed a unique system to measure quality of life and curated the best scientific evidence and tools on wellness strategies for bipolar disorder. Using the daily, weekly, and monthly check-ins, PolarUs allows you to track your quality of life across the most important areas of your life. Live well with bipolar disorder with PolarUs - download and start using the app for FREE today. FEATURES *Choose from hundreds of science-informed strategies for bipolar disorder *Track your progress and quality of life with bipolar disorder *Learn new skills and practice strategies to find balance in daily life *Access curated lists of resources to support your most important life areas FOCUS LIFE AREAS *Mood *Sleep *Physical *Exercise *Diet & Nutrition *Sexual Health *Substance Use *Relationships *Money *Study *Work *Cognition *Identity *Home *Independence *Leisure *Spiritual *Self-esteem NOT A COMMERCIAL APP Our CREST.BD bipolar research network is funded by philanthropic organizations, the Daymark Foundation, and the Canadian Institutes of Health Research. We do not have a financial interest in this project. PolarUs is completely free to use with no in-app purchases. Have a question? Let us know at team@polarus.app
DrowZe
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Night shift wrecked your sleep? DrowZe turns your roster into a sleep plan that moves when your shifts do — built for nurses, paramedics, and anyone on nights or rotating schedules. Most sleep apps assume you sleep at night. DrowZe starts from your shifts: when you finish, when you're back on, how long your commute is, and whether you're an early bird or a night owl. Then it tells you exactly when to sleep, nap, stop caffeine, and see light. AI SLEEP PLANS, SAFETY-CHECKED • DrowZe's recovery engine builds science-based sleep options around your shifts • With AI on (Pro), the AI coach picks the option that fits your recent sleep, sleep debt, and preferences — and explains why • The AI only chooses between options DrowZe has already checked. It never guesses your sleep times from scratch SNAP YOUR ROSTER • Take a photo or upload your work schedule — AI schedule scan pulls out every shift for you to review • Or use built-in rotations: Standard 12/12, Panama, DuPont, 24/48 paramedic, or build your own SLEEP DEBT & RECOVERY • See your sleep debt after back-to-back night shifts • Get a night-by-night recovery plan to pay it back without wrecking your days off • Recovery score shows whether you're catching up THE DAY-OF DETAILS • Pre-shift nap window reminders • Caffeine coach: when to have it, when to stop before sle • Light guidance to protect your circadian rhythm • Tonight Replan when a shift runs late or plans change WORKS WITH WHAT YOU HAVE • Reads sleep from Apple Health (read-only, optional) • Syncs shifts and sleep blocks to your calendar • Log sleep manually in seconds PRIVATE BY DEFAULT AI features are off until you turn them on. Your name never shared, and your data is never sold. Without AI, your plan is built on your device. DrowZe Pro Unlock AI sleep plans, sleep debt, full recovery plans at $29.99/year. Payment is charged to your Apple ID and renews automatically unless cancelled at least 24 hours before the end of the period. Manage in Settings. DrowZe gives sleep-timing guidance and is not medical advice. Talk to a doctor about ongoing sleep problems. Try free. Upgrade to Pro for $4.99/month or $29.99/year. Cancel anytime. Terms of Use: https://drowze.ca/terms Privacy Policy: https://drowze.ca/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: PolarUs at none against DrowZe's 2. PolarUs also leads on ads (none vs shown). DrowZe's advantage is update cadence (weekly vs every 3 months). On price, device support and iOS requirement 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. DrowZe sells 2 in-app purchases, starting at $4.99 per month. PolarUs asks for nothing beyond the download.
PolarUs ships an update every 3 months, DrowZe weekly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | PolarUs | DrowZe |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (8 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 122 MB | 78 MB |
| Age rating | 4+ | 4+ |
| Developer | Erin Michalak | Abhishek Solanki |
In-app purchases
PolarUs
No in-app purchases
DrowZe
- DrowZe Pro Monthly3 Days trial$4.991 Month
- DrowZe Pro Yearly7 Days trial$29.991 Year









