FormulaSignal vs nodiet.ai

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

FormulaSignal compared with nodiet.ai
Detail	FormulaSignal	nodiet.ai
What it does	Monitor supplement formula changes with dated label history	AI calorie counter that recognizes food from photos, text or voice
Stage	Startup	Not given
Founded	2026	Not given
Based in	US	ES
Pricing model	Freemium	Freemium
Pricing	Free Locker: up to 24 saved products with no card required. Signal Pro: $29.99/year (or $3.99/month), includes monitoring for up to 10 products checked daily with email alerts for confirmed changes and monthly Stack Brief.	Free plan includes photo, text, voice and assistant logging, diary, goals and calorie calculator, water and weight tracking, reminders, with limits on AI requests (one voice input per day, one PDF report per week). Pro plan removes these limits and adds unlimited voice input, unlimited PDF reports,
Key features	Free Locker holds up to 24 supplements with dated labels Daily monitoring of up to 10 products Email alerts when formula changes are confirmed Before You Reorder comparison of saved and current labels 561 product listings from 65 brands Signal Verified labels read and dated twice independently Product Ask feature for ingredient and formula questions Category Ledger for supplement brands REST API and MCP server for developers	Recognize food and macros from photo Log food by text or voice input AI assistant for nutrition questions Customizable calorie and macro goals Food diary with ingredient breakdown Water and weight tracking Syncs with Apple Health and Health Connect Progress tracking and statistics Export diary to PDF for sharing Meal reminders
What makes it different	Every number carries a date and source No paid placement and no brand influence Independent and founder-led company	No search or weighing required; AI estimates portions from photos Multiple input methods: photo, text, voice or AI chat Works without sign-up on iOS, Android and web Syncs activity with health apps to auto-adjust calorie targets Core calorie counting features free with optional Pro limits removal
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	5 −1 (down) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	6	0
Citation Flow (Majestic)	24	0
Referring domains (Majestic)	22	2

6 details filled in for both companies.

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