Marigold vs Calk
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Marigold compared with Calk
| Detail | 
Marigold | 
Calk |
|---|
| What it does | A free, ad-free period and cycle tracker that keeps all your data on your phone
| The calorie counter you don't have to live in
|
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| Stage | Not given
| Startup
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| Founded | Not given
| 2026
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| Based in | Not given
| IL
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| Pricing model | Free
| Freemium
|
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| Pricing | Not given
| Core tracker free forever (food logging, targets, weight entry, weight trend). Annual subscription $49.99/year for daily advice and monthly reports (first month free).
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| Key features | - One-tap period logging with editable calendar
- Home-screen widgets for iPhone and Android
- Period, fertile window and PMS predictions up to 12 months ahead
- Daily logging for flow, pain, mood, energy, sleep, discharge, medication and custom symptoms
- Cycle insights by phase
- Doctor report as PDF and CSV export
- Reminders for period, fertile window and pill with discreet text option
- App lock using phone's screen lock
- Pregnancy mode with due date and week counter
- Data encryption on device with one-step deletion
| - Monthly Nutrition Report with meal analysis
- Weight trend chart
- Variety Map showing food diversity
- Offline food and weight logging
- No ads or tracking
- Calorie and macro targets
- Daily advice and recommendations
- No kitchen scale required
- Shareable seven-day Variety Map
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| What makes it different | - Completely free with no ads, everything stays free
- Predictions shown as a range with confidence level and irregular cycle mode
- Doctor report and CSV export created on your phone
- Reminders scheduled entirely on device with discreet text option
| - Food logging with a defined endpoint instead of permanent daily tracking
- Changes to familiar meals instead of restrictive diets
- Focus on meal composition over portion reduction
- Transparent data handling with no third-party tracking
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| Free plan | Not given
| Not given
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| Open source | Not given
| Not given
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| Platforms | Not given
| Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 3 ▼ −7 (down) since last check | 8 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 14 |
|---|
| Citation Flow (Majestic) | 10 | 24 |
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| Referring domains (Majestic) | 4 | 31 |
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4 details filled in for both companies.
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