Data Rhythm vs Dian Dian
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Data Rhythm
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Visualize Your Life Rhythm with Daily Data "DataRhythm" is an app that rhythmically records your daily health and lifestyle data to help you optimize your lifestyle. Do you have these concerns? Despite exercising regularly, your weight keeps going up… You’re training hard, but your performance remains inconsistent during practice or important events… You’re increasing your client visits in sales activities, yet the results are not showing… In such cases, recording your daily data with this app can reveal patterns and pinpoint causes. App Features Record various data points in one place, such as weight, steps, and visit counts Simple, rhythmic input makes daily tracking easy Visualize data trends through graphs Support rhythmical decision-making based on health and performance data By keeping track of "data" aligned with your daily life rhythm, you might uncover unexpected insights for improvement. Start using DataRhythm to bring rhythm to your life and enjoy a fulfilling daily routine! We welcome your feedback and suggestions!
Dian Dian
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Dian Dian is a visual year tracker where every day becomes a colorful dot. Track anything — mood, habits, reading, fitness, periods — and watch your year fill up with color. Your year at a glance: - 12×31 grid showing every day of the year - Custom color legends for each tracker - Quick-fill: select a legend, then tap to color days instantly - Add comments to remember what made each day special - Stats & insights: streaks, distribution, monthly progress - Export your tracker as a shareable image - 7 themes including dark mode - Available in English, French, 简体中文, and 繁體中文 Premium unlocks: - Unlimited trackers (free: 3) - All themes - Animated cursors - Image export - Detailed statistics - No ads Your data syncs across all your devices in real time. Simple, beautiful, and private. Terms of Use (EULA): https://diandian.overridedev.com/terms
Screenshots
Verdict
The clearest difference is in-app purchases: Data Rhythm at none against Dian Dian's 3. Dian Dian's advantage is update cadence (every 5 days vs every 3 weeks) and device support (3 vs 1). On price, ads and iOS requirement 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. Dian Dian sells 3 in-app purchases, starting at $1.99 per month. Data Rhythm asks for nothing beyond the download.
Data Rhythm ships an update every 3 weeks, Dian Dian every 5 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.
| Parameter | Data Rhythm | Dian Dian |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 5 days — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | Masaki Hayashi | Override SAS |
In-app purchases
Data Rhythm
No in-app purchases
Dian Dian
- Premium Monthly7 Days trial$1.991 Month
- Premium Yearly7 Days trial$8.991 Year
- Premium Lifetime$22.99









