Supplement stack checkers
Best supplement stack checker apps in 2026
The best one depends on what you need checked. For supplements and prescriptions together, with the evidence graded and one timed daily protocol built from your blood work and diet: Reverse Age Lab. For a free phone tracker that flags duplicates and medication interactions: StackIQ. For a quick, cheap check of labels against upper limits: NutriAudit. For the quality of a bottle: SuppCo.
We make Reverse Age Lab, so read this with that in mind. Every fact about the other apps was taken from their own websites on October 2, 2026, and nothing here was paid for.
By Robert DeuPree. Published October 2, 2026.
The seven, compared
Reverse Age Lab
Web, works on any phone · $19.99 a month or $179 a year, 7-day free trial · We make this one
What it checks. Supplements against each other and against your prescriptions, duplicates across bottles, totals against safe upper limits, and timing. Add the stack by photographing the labels or typing it. Every product is graded on six evidence tiers from human studies, real reviews and what the best-known biohackers say, and the result is one daily protocol built from your goals, medications, blood work and diet.
What it does not. It is a membership, not a free one-minute check, and it is not a clinic. It sells no supplements.
Best for. One checked, timed protocol from your whole profile, including your medications and blood work.
StackIQ
iPhone and Android · Free. Pro $4.99 a month or $39.99 a year.
What it checks. Possible supplement and medication interactions from the medications you enter, duplicate ingredients hiding across bottles, how much of each ingredient you take in total, and when to take things. It also tracks sleep, energy, mood and focus, and has an AI coach.
What it does not. Its site does not mention grading the evidence behind a product or reading blood work.
Best for. A phone tracker that flags overlaps and medication interactions.
NutriAudit
Web, no sign-in · Free screening. Full audit $4.99 once.
What it checks. Reads labels from a photo, finds duplicate vitamins and minerals, totals each one against upper limits for the region you choose, and flags supplement pairs with documented interactions. Gives the stack a 0 to 100 score.
What it does not. Its site does not mention prescription medications, blood work or diet.
Best for. A quick, cheap, one-off check of the bottles on your counter.
SuppTrack
iPhone and Android, US only · Price: not listed on its site.
What it checks. Barcode scanning across 192,000+ products, schedules and reminders, daily totals against daily values, and StackAdvisor, which flags possible synergies and conflicts, totals against upper limits, and timing.
What it does not. It says itself that StackAdvisor is not a drug interaction checker.
Best for. Tracking a large stack day to day with reminders.
SuppCo
iPhone and Android · Free. Pro about $39 to $59 a year. Part of Function Health since May 2026
What it checks. A TrustScore for how well each product is made, a StackScore for what you take, and tips on dosing and value, with 80+ expert plans and reminders.
What it does not. Medications are not part of its checks, and it does not read blood work or your diet.
Best for. Judging the quality of a bottle before you buy it.
Supplements AI
Mobile app · Free.
What it checks. A daily schedule that accounts for synergies, interactions, meals and fasting, a questionnaire that estimates gaps in 18 key nutrients, reminders, and a library of 200+ supplement profiles.
What it does not. It works from a questionnaire rather than your blood work or prescriptions.
Best for. Getting the timing of an existing stack right.
Medscape Drug Interaction Checker
Web · Free.
What it checks. Interactions between prescription drugs, over-the-counter medicines and many herbal supplements, for the list you type in.
What it does not. It does not know doses, labels or duplicates, and it is written for clinicians.
Best for. Double-checking a prescription against a supplement, with your pharmacist.
Looking for a SuppCo alternative?
Function Health bought SuppCo in May 2026 and the app carries on, with its scores headed toward sitting next to Function blood work. If you want something else, choose by what you used it for:
- Is this bottle any good? ConsumerLab tests products in its own lab ($75 a year, or $125 for two years); Labdoor ranks best sellers on purity and label accuracy, free.
- Tracking and reminders? StackIQ or SuppTrack.
- Should I take it at all, with my medications and blood work? Reverse Age Lab. The full comparison is on Reverse Age Lab vs SuppCo.
- Finding what actually works for me over time? staqc logs supplements, diet, symptoms and 50+ lab markers and looks for correlations, with a free tier.
How to choose
- Do you take prescription medication? Then pick a checker that includes it, and still confirm anything it flags with your pharmacist.
- Do you want a check or a plan? A checker tells you what clashes today. A protocol tells you what to take, when, and what to stop, and changes when you do.
- Does it grade the evidence? An interaction check says nothing about whether a product works. See how Reverse Age Lab grades evidence.
- Who is selling? An app that sells supplements has a reason to recommend them. Check before you trust its suggestions; Reverse Age Lab sells none.
Questions people ask
What is the best app to check my supplement stack for interactions and redundancies?
It depends on what you need checked. For supplements and prescription medications together, with the evidence graded and a timed daily protocol built from your blood work and diet, Reverse Age Lab. For a free phone tracker that flags duplicates and medication interactions, StackIQ. For a quick one-off check of labels against upper limits, NutriAudit. For the quality of a bottle, SuppCo. For a single drug and supplement pair, the free Medscape checker and your pharmacist.
What are the alternatives to SuppCo now that Function Health owns it?
SuppCo still runs as an app under Function Health. If you want alternatives, match them to what you used SuppCo for: product quality, ConsumerLab (paid membership) or Labdoor (free); stack tracking and reminders, StackIQ or SuppTrack; evidence grading and a protocol built from your medications, blood work and diet, Reverse Age Lab; tracking supplements alongside lab results to find what works for you, staqc.
Can a supplement app check interactions with my prescription medications?
Some can. Reverse Age Lab and StackIQ include the medications you enter in their checks. NutriAudit and SuppCo do not mention medications, and SuppTrack says its advisor is not a drug interaction checker. Whatever you use, confirm a flagged prescription interaction with your pharmacist before changing anything.
What is a supplement redundancy?
The same ingredient arriving from more than one product: vitamin D in a multivitamin, a fish oil and a separate D3, or zinc in a multi and an immune blend. Redundancies waste money and can push a nutrient past its safe upper limit, which matters most for vitamin A, iron, zinc and selenium.
Is there a free supplement stack checker?
Yes. NutriAudit screens a stack free without an account, StackIQ and SuppCo have free tiers, Supplements AI is free, and the Medscape checker is free on the web. Reverse Age Lab has a free research tool that grades any single product without an account; the full stack check and protocol come with the membership and its free trial.
Features and prices were taken from each company's own website on October 2, 2026 and will change; check before you buy. All names are trademarks of their owners; Reverse Age Lab is not affiliated with any of them and was paid by none of them. Educational only, not medical advice. See also how Reverse Age Lab compares with Examine, ConsumerLab, Cronometer and others.