Comparison

ChartDay vs # Simple Graph

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

# Simple Graph

Features
Read full description

Easily create charts on your smartphone. Enter data in a table and visualize it clearly with bar charts, line charts, pie charts, and more. Simply add item names and values to instantly turn your data into charts. Compare multiple values, change the display order, and organize your charts to suit your purpose. Useful for sales and expense comparisons, survey results, study tracking, weight and fitness progress, event totals, hobby records, and many other types of data management and visualization. Useful for situations such as: • Comparing monthly sales, profits, and expenses • Tracking household spending, travel costs, and event budgets • Visualizing changes in weight, exercise time, and study hours • Creating pie charts for surveys and voting results • Comparing product prices, ratings, and scores • Displaying rankings for sports records and game results • Summarizing page views, downloads, tasks, and activity counts • Visualizing data for school projects, classes, and reports • Comparing numbers for hobbies and collections Turn data entered in a table into charts with ease. This app is also convenient for quick summaries, comparisons, and visualizing everyday records. For anyone who wants to create simple charts on a smartphone without using complicated spreadsheet software, give it a try. ■ Features • Intuitive and Simple Controls A clean and easy-to-understand UI / UX. Simply enter items and numbers to create charts, even if it is your first time. • Manage Data in Tables Add the items you want to track as rows, and manage values such as sales, costs, scores, and time as columns. The table format makes it easy to add, edit, and review your data. • Multiple Chart Types Supports bar charts, line charts, pie charts, area charts, and scatter plots. Switch between chart types depending on your data and what you want to understand. • Compare Multiple Data Series Compare multiple values in the same chart, such as sales and profits, study hours and scores, or exercise time and weight. Quickly understand differences and trends across items. • Sort and Rank Data Change the chart display order to suit your needs, including input order, ascending order, and descending order. Useful for viewing data as rankings, such as highest to lowest values. • Chart Titles and Display Settings Set a title for each chart. Adjust legends, data labels, grid lines, and axis titles to create clear and easy-to-read charts. • Color-Coded Display Use colors to organize items and data visually. This makes it easier to understand multiple items and series at a glance. • Notes Add notes to each item. Keep supporting details, recording conditions, aggregation rules, and reminders together with your data. • Links Add links when needed. Convenient for managing reference materials, related pages, and shared files alongside your data. • Start Immediately No account registration required. Create tables and visualize data whenever you need them, without complicated setup. • Export and Share Export and share your data and charts. Share charts as images, or export data in CSV and Excel formats for checking and editing on a computer. • Import Import saved data and edit it again. Useful when you want to update tables and charts you have already created. • Dark Theme Support Supports dark theme for comfortable use at night. Enter data in a table and easily visualize it with charts. Use bar charts, line charts, pie charts, and more to make daily records, comparisons, and summaries easier to understand.

Screenshots

ChartDay4 screens
# Simple Graph4 screens

Verdict

The call

The clearest difference is update cadence: # Simple Graph at every 9 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ChartDay sells 1 one-off in-app purchase and # Simple Graph sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ChartDay ships an update every 3 weeks, # Simple Graph every 9 days. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

Scorecard1 real difference · 9 level
ChartDay versus # Simple Graph: the parameters behind the verdict, then further details
ParameterChartDay# Simple Graph
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 3 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.215.6 — better
Further details — not scored
Size2 MB50 MB
Age rating4+4+
DeveloperFu NiYUKI TANAIKE

In-app purchases

1 purchases

ChartDay

One-time1
  • ChartDay Unlimited$1.99
2 purchases

# Simple Graph

Subscriptions2
  • Graph Pro (Monthly)$2.991 Month
  • Graph Pro (Annual)$27.001 Year

Questions

Is ChartDay free?
ChartDay is free to download, with in-app purchases available.
Is # Simple Graph free?
# Simple Graph is free to download, with in-app purchases available.
Do ChartDay or # Simple Graph have ads?
Neither ChartDay nor # Simple Graph shows ads.
Which is updated more often, ChartDay or # Simple Graph?
ChartDay ships an update every 3 weeks, and # Simple Graph every 9 days. Most recently, ChartDay was updated on October 6, 2026 and # Simple Graph on October 4, 2026.

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