# ChartDay — See Your Days in Data

> Visualize daily habits, health, and fitness data with interactive charts and statistics. (iPhone/iPad app by Fu Ni.)

- Source: https://appshunter.io/ios/app/chartday/id6446491718 (this page in markdown: same URL + `.md`)
- Developer: [Fu Ni](https://appshunter.io/developer/1560534229)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Rating: 5.00/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.2 · 2 MB
- Languages: English, Japanese
- Released: 2023-03-30
- Data updated: 2026-06-01
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/chartday/id6446491718/reviews.md

## What is ChartDay?

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.

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| ChartDay Unlimited | $1.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/chartday/id6446491718/reviews.md

### 5/5 — Stellar App

*2025-02-11*

This is an extremely useful and well designed app to chart daily observations. Use it to follow weight, sleep, hours worked etc
Review daily values or weekly/monthly averages. Or look at totals over time.
The developer is extremely responsive and quick to fix bugs (rare) or consider features when suggested. 
Worth every penny!

**Developer response:** I really appreciate your suggestion to add weekly and monthly views (released in version 2.4)—its made the app even more useful for everyone!

## Frequently asked questions about ChartDay

### Does ChartDay have ads?

No, ChartDay is completely ad-free. The developer emphasizes privacy with no ads, tracking, or data collection.

### How much does ChartDay cost?

ChartDay is free to download and use. An optional one-time in-app purchase, 'ChartDay Unlimited,' unlocks unlimited chart creation.

### What devices does ChartDay support?

ChartDay is available for iPhone and iPad. It utilizes iCloud sync to keep your data consistent across all your Apple devices.

### How often is ChartDay updated?

The latest version is 3.1, last updated on April 3, 2026. This indicates a commitment to ongoing development and improvements.

### What kind of data can I track with ChartDay?

You can track daily habits, health metrics, fitness activities, and more. The app is designed for versatile data entry, including multiple entries per day with timestamps.

### Can I export my data from ChartDay?

Yes, ChartDay allows you to export any chart as a CSV file. This feature is useful for further analysis or backup purposes.

### What is the age rating for ChartDay?

ChartDay has an age rating of 4+. This suggests it is suitable for a wide range of users, including children.

### How does ChartDay help with motivation?

ChartDay helps with motivation by allowing you to set goals directly on your charts with target lines or ranges. Visualizing progress also keeps your objectives in sight.

## Version history (last 5 releases)

### 3.1.1 — 2026-05-31

Bug fix: Decimal values can now be entered on devices whose region uses a comma (,) as the decimal separator. Previously these values would reset to zero — this has been resolved.

### 3.1 — 2026-04-03

Multi-Entry Mode
Record multiple data points per day with timestamps on a single chart. Perfect for tracking walks, meals, workouts, or anything that happens more than once a day.

### 3.0 — 2026-02-07

Tags & Filtering feature added.

### 2.18 — 2026-01-26

Added a per-chart option to show hours only on the Y axis when time display is set to minutes, with a toggle available in the char list card context menu.

### 2.17 — 2025-09-21

Apply tint mode for the widget color.

## Apps similar to ChartDay

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Charts IQ: Chart & Graph Maker](https://appshunter.io/ios/app/charts-iq-chart-and-graph-maker/id6473266771) | 3.7 (30) | Free | Productivity |
| [ChartLre - Create Charts](https://appshunter.io/ios/app/chartlre-create-charts/id1440556491) | — | Free | Productivity |
| [My Graph ( Chart )](https://appshunter.io/ios/app/my-graph-chart/id946720502) | 3.7 (3) | Free | Productivity |
| [EcoCharts](https://appshunter.io/ios/app/ecocharts/id666752005) | — | Free | Productivity |
| [Graph](https://appshunter.io/ios/app/graph/id381953671) | 2.9 (15) | Free | Productivity |
| [YourGraphs](https://appshunter.io/ios/app/yourgraphs/id1660714207) | — | Free | Productivity |

## More apps by Fu Ni

- [ZeroOneFlow](https://appshunter.io/ios/app/zerooneflow/id1563516711)
- [MirrorTalk](https://appshunter.io/ios/app/mirrortalk/id1613526988)

All apps by Fu Ni: https://appshunter.io/developer/1560534229

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*