CurveDay
Vasco da Soda Lifestyle
Drug efficacy curves and supplements. Interactions. Real-time.
- Downloads
- 12+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Jun 7
- 2026 · v1.0.4
Screenshots
About CurveDay
Do you still have caffeine in your blood when you sleep?
CurveDay makes pharmacology visible – understandable for everyone.
REAL-TIME EFFECTIVENESS CURVES
For every dose, CurveDay calculates an individual effect curve
based on pharmacological data: onset, Tmax, half-life, and
bioavailability. You see the entire course of action at a glance –
from the first effect to complete elimination.
No more guesswork. Just clarity.
WHAT YOU CAN TRACK
✔ Medications – Ibuprofen, Paracetamol, Aspirin, Ramipril, Metoprolol
✔ ADHD – Methylphenidate (Ritalin, Concerta), Lisdexamfetamine (Vyvanse),
Atomoxetine (Strattera), Adderall
✔ Antidepressants – Sertraline, Escitalopram
✔ Sleep aids – Melatonin, Diphenhydramine, Doxylamine, Valerian
✔ Antihistamines – Cetirizine, Loratadine
✔ Caffeinated drinks – Espresso, Filter coffee, Cappuccino, Red Bull, Monster
✔ Supplements – Magnesium, Vitamin D3, Vitamin B12, L-Theanine, Omega-3
✔ Alcohol – Beer (0.33L / 0.5L), Wheat beer, Wine, Sparkling wine, Shots, Long drinks
✔ Nicotine – Cigarettes, E-cigarettes, Nicotine pouches Patches
✔ Nootropics – Caffeine Stack, L-Theanine, Guarana
✔ Others: Tramadol, Omeprazole, Simvastatin, Amlodipine, and more
KEY FEATURES
📈 PHARMACOLOGICAL CURVE
Over 64 substances with real PK data. Personalized with your
body profile (weight, height, age, biological sex).
⚠️ INTERACTION DETECTION
Over 65 known interactions – from synergistic to critical. CurveDay
actively warns you about dangerous combinations, e.g.:
→ Acetaminophen + Alcohol (Liver damage!)
→ GHB + Alcohol (Life-threatening!)
→ SSRI + Tramadol (Serotonin syndrome!)
😴 SLEEP WINDOW
Shows which substances are still active when you fall asleep. Caffeine at
3 PM? The curve shows you whether you'll still feel it at 11 PM.
🔁 QUICK RETAKE
Intakes from the last 24 hours appear directly on the home screen –
grayed out, ready for a new dose. Just tap it.
📸 STORY EXPORT
Share your effects as an Instagram Story (9:16 JPEG) –
for 1 day, 1 week, or 1 month. Beautifully designed, instantly shareable.
🔔 REMINDERS & PEAK ALERTS
Push notifications for intake and peak effects.
Daily digest every morning.
🎯 BODY PROFILE
Optional: Weight, height, age, and gender for more precise calculations.
Database default: 70 kg adult.
🌗 DARK & LIGHT MODE
Fully customizable. System settings are respected.
🔒 YOUR DATA, YOUR DEVICE
No account. No cloud required. All data stored locally.
Optional sync between devices available.
WHO WAS CURVEDAY DEVELOPED FOR?
→ People with chronic illnesses who take multiple medications
→ People with ADHD who want to understand their focus time
→ Biohackers and self-optimizers with complex supplement stacks
→ Anyone who wants to be more mindful of their caffeine, alcohol, or nicotine intake
→ Health-conscious individuals who finally want to understand what's happening in their bodies
DISCLAIMER
CurveDay is for general information purposes only and does not replace medical or pharmaceutical advice. Always consult a doctor or pharmacist with any questions regarding medications.
What’s new
Version 1.0.4 · Updated June 7, 2026
Version 1.0.2 · New icons: every substance now has a unique symbol (coffee, moon, lightning, pill and more) · Quick add: tap + on any substance to log it instantly · Chart: 4-hour default view, denser time axis, cleaner layout · Active substances: ⋯ menu to pin or delete entries · Improved contrast and readability throughout · Fix: category filter on substances screen · Fix: duplicate entries in sleep warning
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| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| CurveDay | – | Free | 10+ | Jun 7, 2026 | |
| Fay Nutrition Dietitians | 4.7 / 5 | Free | 10,000+ | Oct 21, 2026 | Compare |
| Casherwise: Budget & Expenses | 4.9 / 5 | Free | 10,000+ | Jan 18, 2025 | Compare |
| Intermittent Fasting: FastEasy | 4.5 / 5 | Free | 5,000,000+ | Aug 31, 2026 | Compare |
| HydroJug | 4.7 / 5 | Free | 10,000+ | Oct 15, 2026 | Compare |
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