ChartDay vs Meetrics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ChartDay
Track daily habits, health, and fitness with interactive charts. Offers instant statistics, goal setting, and data export. Syncs across devices and provides home screen widgets for quick access.
- Daily tracking with interactive charts
- Instant statistical calculations
- Goal setting with target lines
- Tagging and filtering for organization
- Home screen widgets
- iCloud sync across devices
- Data export to CSV
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Track your daily habits, health, fitness, and more — visualized in beautiful, interactive charts. ◉ Key Features ・Daily Tracking Made Simple Enter a number each day and watch your progress unfold as a chart. View trends by week or month at a glance. ・Instant Stats Automatic calculations for sum, count, min, max, mean, and median — always up to date. ・Set Goals & Stay Motivated Add a target line or range directly on your chart to keep your objectives in sight. ・Tags & Filtering Organize entries with custom tags and filter your chart by any combination. ・Home Screen Widgets Check your latest data without opening the app. Tap the widget to jump straight to data entry. ・iCloud Sync Your charts stay safe and in sync across all your devices. ・Multi-Entry Mode Record multiple data points per day with timestamps on a single chart. Ideal for tracking walks, meals, workouts, or anything that happens more than once a day. ・Data Export Export any chart as a CSV file whenever you need it. ・Private & Ad-Free No ads, no tracking, no data collection. Your data belongs to you. ◉ ChartDay Unlimited (In-App Purchase) Unlock unlimited chart creation with a one-time purchase. Try it free first — add up to 100 data points before deciding.
Meetrics
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Meetrics is a personal metrics tracker built for curious people who want to understand themselves through data. Log anything that matters to you — weight, mood, sleep, grades, habits, workouts, or any custom metric — and explore how it changes over time. TRACK ANYTHING • Numeric, binary (yes/no), and text entries • Organize everything with tags and optional units • Quick-log with your most-used tags • Auto-import data from Apple Health PRIVACY FIRST All your data lives on your device. Nothing is shared or sold. The AI Analyst only accesses your data when you explicitly use it. EXPLORE YOUR DATA • Beautiful charts with daily and hourly bucketing • Heatmap calendar showing activity at a glance • Streak tracking for habits and binary metrics • Rolling averages and outlier filtering • Bayesian success-rate estimation for binary data DISCOVER CORRELATIONS • Compare any two metrics side by side • Adjustable lag analysis — does sleep affect mood the next day? • Hourly, 4-hour, and daily bucket sizes • Gap-filling for sparse datasets AI ANALYST — PREMIUM • Daily insight cards: trends, correlations, and anomalies surfaced automatically • Chat with an AI that has full access to your data and answers in plain language • Ask anything: "What predicts my mood?" or "How am I trending this month?" • Conversation history persists across sessions PRIVACY https://github.com/sergeybok/meetrics-support/blob/main/PRIVACY.md EULA https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Meetrics at every 4 days against ChartDay's every 3 weeks. On price, ads, in-app purchases and 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
Both are free to download. ChartDay sells 1 one-off in-app purchase and Meetrics sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.
ChartDay ships an update every 3 weeks, Meetrics every 4 days. The most recent releases landed on June 1, 2026 and September 20, 2026 respectively.
| Parameter | ChartDay | Meetrics |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.2 — better | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 5 MB |
| Age rating | 4+ | 12+ |
| Developer | Fu Ni | Sergiy Bokhnyak |
In-app purchases
ChartDay
- ChartDay Unlimited$1.99
Meetrics
- Meetrics Premium Monthly7 Days trial$19.991 Month
- Meetrics Premium Annual$179.991 Year









