RhythmTracker vs Scanly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RhythmTracker
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Understand Your Heart Rhythm Patterns RhythmTracker helps you discover connections between daily life, mood, and heart rhythm symptoms. Whether you experience atrial fibrillation, palpitations, or other arrhythmias, this app provides insight and data to understand your triggers. Who Should Use RhythmTracker Anyone experiencing heart rhythm irregularities: Atrial Fibrillation, PVCs, Palpitations, SVT, or other arrhythmias. Especially valuable for those logging lifestyle triggers, preparing for cardiology appointments, or managing chronic arrhythmia. Beautiful Calendar Interface Track your heart health with an intuitive monthly calendar. Each day shows symptom intensity with color-coded indicators, making patterns visible immediately. Quick navigation lets you jump to any date or log today's experience in seconds. Personalized Daily Tracking Track symptom intensity on a 0-5 scale, record your mood, log personal habits, and add notes when needed. Define up to 10 custom situation labels matching your lifestyle—coffee, exercise, stress, alcohol, foods, sleep quality, or whatever might affect your symptoms. Optional menstrual cycle tracking is available. Powerful Statistical Analysis With at least two weeks of entries, run comprehensive analysis using established medical research methods: Spearman Correlation identifies which habits and moods occur with symptoms; Time-Lagged Analysis detects delayed effects up to 3 days later; Fisher's Exact and Chi-Square Tests validate pattern significance; confidence ratings separate real patterns from chance. Results You Can Understand Every finding is explained in plain English: "Symptoms were more common on Coffee days - Noticeable pattern." Each result includes confidence indicators so you know which patterns deserve attention. Healthcare Collaboration Export tracked data as CSV files for doctor appointments. Visual calendars and statistical summaries enable informed conversations about triggers and treatment. Complete Privacy All tracking and analysis happens on your iPhone. Your data never leaves your device unless you export it. No cloud storage, no account required, no data sharing. Key Features Calendar: Monthly view with color-coded indicators, swipe navigation, one-tap access to any day. Daily Entry: Symptom intensity slider (0-5), mood tracking, up to 10 customizable habit labels, optional menstrual tracking, daily notes. Analysis: Spearman correlation, time-lagged detection (0-3 days), Fisher's Exact and Chi-Square tests, plain-English explanations, confidence indicators. Export: CSV files including all tracked data and notes. How It Works Customize categories for habits you want to track Log daily (30 seconds): symptom intensity, mood, situations, optional notes Build history over 2+ weeks for meaningful pattern detection Run analysis to identify significant patterns Review plain-English findings with strength indicators Share CSV exports with your doctor The Science RhythmTracker uses recognized statistical methods: Spearman Correlation measures whether factors—including mood—occur together with symptoms; Time-Lagged Analysis reveals delayed effects; Fisher's Exact and Chi-Square Tests determine significance. Every finding includes p-value calculations indicating confidence. Medical Disclaimer RhythmTracker is a tracking tool, not a medical device. It does not diagnose conditions or provide medical advice. Findings are observational correlations to discuss with your provider. For severe symptoms, chest pain, or difficulty breathing, seek immediate medical attention. Privacy Commitment Your health information stays on your device. We do not collect, store, or access your data. No accounts, no cloud storage, no analytics. Complete control is yours. Start Today Download RhythmTracker and discover patterns affecting your heart health. Consistent logging, powerful analysis, and complete privacy help you and your doctor make informed decisions.
Scanly
This app helps you understand the true health impact of your food by analyzing ingredients, processing levels, and potential risks. It provides personalized scores and insights based on your unique allergies, diet, and health goals.
- AI vision for product recognition
- Barcode scanning
- Personalized health scores
- Processing level analysis
- Additive and E-number explanations
- Microplastic and contamination risk assessment
- Hidden allergen detection
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Take the guesswork out of healthy eating. Most food labels are designed for marketing, not for you. Scanly cuts through the noise and shows what's actually in your food, including additives, processing, allergens, sugar, salt, saturated fat, and more. Then it explains what it means for your body. Point your camera at any product, fresh produce, barcode, or ingredient list. In seconds, you'll see a personalized health score, the ingredients that matter, and clear insights to help you make better choices. WHAT SCANLY SHOWS YOU • Processing level: is it whole, processed, or ultra-processed? We flag the difference. • Additives & E-numbers: what each one does, and whether it matters for you. • Ingredient insights: understand what’s really inside your food. • Carcinogenic risk: ingredients flagged by the WHO's IARC as possibly or probably cancer-causing in humans. • Microplastic & contamination risk: based on packaging and processing data. • Real sugar, salt, and saturated fat: including the kinds that don't show up clearly on labels. • Allergens: including hidden ones in "may contain" warnings. PERSONALIZED TO YOU Generic ratings ignore the fact that everyone's body is different. The same product can be a great choice for one person and a terrible one for another. Scanly scores products based on: • Your allergies • Your diet preferences • Your health goals WHAT YOU GET • AI vision: no barcode? Just take a photo. Scanly recognizes products from packaging, ingredient lists, and fresh food. • Barcode scanning: scan packaged foods in seconds. • Personalized health scores: based on what matters to you. • Scan history: track what you scan and spot patterns over time. • Independent: no sponsored brands, no paid placements. SCANLY PRO With Scanly PRO, you get unlimited access to Scanly, including unlimited scanning, your complete scan history, healthier alternatives, hundreds of safe recipes rated with a Scanly Score, and advanced personalization. Scanly PRO costs €29.99 per year and starts with a 3-day free trial. PRIVACY FIRST We don't sell your data. Ever. Your scans, allergies, and health goals stay yours. Built by NutriLabs Tech LLC. Know what you're eating. Choose what's right for you. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getscanly.app/privacy
Screenshots
Verdict
The clearest difference is price: Scanly at Free against RhythmTracker's $8.99. Scanly also leads on update cadence (every 2 days vs weekly) and iOS requirement (16.4 vs 18.6). RhythmTracker's advantage is in-app purchases (none vs 4) and ads (none vs shown). On device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Scanly is free to download; RhythmTracker costs $8.99 up front. Scanly sells 4 in-app purchases, starting at $24.99 per year. RhythmTracker asks for nothing beyond the download.
RhythmTracker ships an update weekly, Scanly every 2 days. Both last shipped on October 31, 2026.
| Parameter | RhythmTracker | Scanly |
|---|---|---|
| Price | $8.99 | Free — better |
| Rating | — | 4.6 (36 ratings) — better |
| Number of ratings | — | 36 — better |
| Update frequency | Weekly | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 18.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 9 MB | 95 MB |
| Age rating | 17+ | 12+ |
| Developer | ITSecuConsult | NutriLabs Tech LLC |
In-app purchases
RhythmTracker
No in-app purchases
Scanly
- Scanly PRO7 Days trial$24.991 Year
- Scanly PRO3 Days trial$29.991 Year
- Scanly PRO3 Days trial$34.991 Year
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- Scanly PRO$34.991 Year








