Your supplement
stack manager.
Add your supplements and see what works together, what to separate, and when to take them. One app for your whole stack.
Stack
6 supplements
Stack review
1 flagZinc and Iron compete for the same absorption pathway. Take at least 2 hours apart.
Supplements
You're probably taking something wrong.
Zinc blocks iron. Calcium competes with magnesium. Your morning stack might be cancelling itself out. OnDose checks every combination against published research.
Both use the same transporter. Taking them together can cut absorption by up to 50%.
Vitamin C converts iron into a form your gut absorbs more easily. Pair them.
High doses compete for the same pathway. Separate by at least 2 hours.
K2 directs the calcium that D3 helps absorb. They work better together.
350+
Compounds
covered
100+
Interactions
checked
37K+
Barcodes
indexed
100%
Every source
cited
Stay on dose.
OnDose builds your daily schedule based on absorption science so you don't have to think about it.
Absorption windows
Grouped by when and how your body absorbs each supplement.
Food requirements
See what needs food, what needs an empty stomach.
Conflict separation
Competing supplements placed in different timing windows.
Good morning.
4 this morning, 3 this evening.
Morning
5000 IU
2 x 1000 mg Softgels
18 mg · Empty stomach
15 mg
Evening
400 mg
600 mg
100 mcg
Daily check-ins
Tap to mark each dose as taken. See your progress through the week.
Streak tracking
Build consistency day by day. Every dose counts.
Push notifications
Get reminded at each timing window. Morning, evening, whenever.
Scan. Don't type.
Scan the barcode to add a product. Not in the database? Photograph the label and every ingredient gets extracted.
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Matched against a database of 37,000+ supplement products. Name, dose, and ingredients fill in for you.
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Ingredients, doses, and serving size extracted automatically from the Supplement Facts panel.
Help the next person
Every label photographed adds to the database. The next person to scan that product gets it instantly.
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Vitamin D3 + K2 Complex
Sports Research
Softgel · 1 Softgel
4 active ingredients
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