FennelMenu
Know if a food fits
your limits.
Stop checking five different lists before lunch. Search any food, see the verdict for every condition you track, and understand exactly why.
Checking
Spinach, raw
Checking against
Try it yourself
No account needed. Verdicts use kidney stones (oxalate) as default. Sign up to add your conditions.
Safe
Low in the nutrients your condition limits
Limit
Moderate, counts toward your daily budget
Avoid
High for your condition. Use caution.
One search, all conditions
Kidney stones, gout, and CKD all checked in a single lookup. The verdict for each shows the specific nutrient value and why.
Track the limits your clinician set
Budget bars update as you log. See whether almonds push you over oxalate, potassium, or purine limits before you eat them.
Export for your next appointment
Generate a 7, 30, or 90-day summary with daily intake, symptoms, and hydration. Formatted to hand to a clinician or dietitian.
8 conditions supported
Select any combination. Each tracks different nutrients with its own limits.
Oxalate in urine drives calcium stone risk.
Purines metabolise to uric acid; crystals form in joints.
Impaired kidneys struggle to excrete electrolyte excess.
Pre-dialysis or dialysis-level restrictions.
Immune reaction: traces trigger intestinal damage.
Lactase deficiency; undigested lactose causes GI symptoms.
Fermentable carbs cause bloating and pain in IBS.
Carbohydrate and added sugar drive blood glucose; budgets spread across meals.
How it works
Pick your conditions
Select from 8 supported conditions. Mix and match; Fennel tracks all of them at the same time against a shared food database.
Search any food, see the verdict
Type a food name. Instantly see Safe, Limit, or Avoid for each condition, with the nutrient value, budget impact, and the data source.
Log, track, and export
Budget bars update as you log. At the end of any period, export a clinician-ready report showing intake, trends, and symptoms.
Every value has a source
Fennel doesn't use anonymous averages. Every nutrient value shows where it came from, the confidence level, and notes on how preparation affects it. Sources include USDA FoodData Central, EFSA, Harvard T.H. Chan food data, and peer-reviewed journals.
- Citation per nutrient, not per food
- HIGH, MEDIUM, or LOW confidence on every value
- Range (min–max) shown where data varies
- Preparation notes where relevant
Example annotation: spinach oxalate
Source
Noonan SC & Savage GP (1999). Urological Research 27(2):77–84 · USDA FoodData Central SR Legacy
Boiling and discarding the water reduces oxalate by 30–50%. Raw spinach has the highest content.
Pricing
Start free. Beta pricing preview. Payments are not active yet.
Free
- 120+ foods with condition verdicts
- All 8 diet conditions, any combination
- Daily diary with nutrient budget bars
- Hydration and symptoms diary
- 5 locally-stored custom foods
Pro & Family
Beta previewPro adds 25 personal synced custom foods, recipes, advanced history, and the clinician PDF export. Family adds a shared household library. Planned prices. Payments are not active during beta.
- Everything in Free
- 25 personal custom foods
- Recipes builder
- Advanced history and trends
- Clinician export (PDF)
- Priority food requests
- Family plan: shared household library
Join the beta
Create a free account, then ask for Pro or Family beta access. Tiers are assigned manually while payments are off.
See pricing previewBarcode scanning and the mobile app are planned features, not yet available.
Built for real households
One subscription for up to four people. Share the foods you cook and buy, and keep everyone's health data private.
Share what you buy
Add custom foods once to a shared household library. Everyone can log them, with no re-entering the same meals.
Private by default
Conditions, logs, symptoms, targets, and clinician reports stay private to each person. Only custom foods are shared.
Everyone's own limits
Each member tracks their own conditions and targets. The same shared food shows the right verdict for each person.
Questions
Is this medical advice?
No. Fennel tracks dietary intake against known limits. Your personal targets must be set by a clinician based on your own test results. The defaults shown are illustrative only.
Can I select multiple conditions?
Yes. Select as many as apply. Fennel evaluates every food against all of them at once and shows the most relevant verdicts.
Where does the food data come from?
USDA FoodData Central, EFSA food-composition data, Harvard T.H. Chan food data, and peer-reviewed journals. Every value shows its source and confidence level.
Can I export my data?
Yes, on Pro and Family. Generate a PDF report (7, 30, or 90 days) formatted for a clinician or dietitian. During the beta, Pro and Family access is assigned manually while payments are off.
Can family members see my health data?
No. On the Family plan, members share a custom-food library only. Conditions, logs, symptoms, targets, and reports stay private to each person, and verdicts are personalised to each member's own conditions.
Is there a mobile app?
The web app works on any browser. A native iOS and Android app with barcode scanning is planned but not yet available.