Data Rhythm vs Quantify 4
Price, ratings, monetisation and update history for both apps, side by side β 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 upβ¦ Youβre training hard, but your performance remains inconsistent during practice or important eventsβ¦ Youβre increasing your client visits in sales activities, yet the results are not showingβ¦ 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!
Quantify 4
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Make Your Thoughts Visible! Have you ever had trouble choosing between several things you want? "Which one do I really want the most?" "How big is the difference between my first, second, and third choices?" This app helps you turn your thoughts, preferences, and priorities into numbers, making your decisions easier to understand. **β Turn Your Preferences into Numbers** Add the items you want to compare and rate them based on factors such as price, performance, and design. See the results through radar charts and rankings. You can also assign different weights to the factors that matter most to you and discover how your rankings change. **β Get a Fresh Perspective** Not sure you can judge objectively? Ask a friend or family member to evaluate the items first. Then adjust the weights according to your own preferences. You might discover that the best choice for you is different from what you initially expected! **β As Easy to Use as a Calculator** Designed for quick and casual comparisons, just like using a calculator. No password setup or photo registration features. Simply focus on comparing and evaluating your options. Shopping and can't decide? Take out your phone and make a quick comparison right there in the store! Whether you're choosing something to buy or exploring your own preferences, the possibilities are up to you. Turn what's in your mind into numbers and discover what really matters to you!
Screenshots
Verdict
The clearest difference is in-app purchases: Data Rhythm at none against Quantify 4's 1. Data Rhythm also leads on update cadence (every 3 weeks vs every 21 months). Quantify 4's advantage is ads (none vs shown) and device support (3 vs 1). On price and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Quantify 4 sells 1 one-off in-app purchase. Data Rhythm asks for nothing beyond the download.
Data Rhythm ships an update every 3 weeks, Quantify 4 every 21 months. Both last shipped on October 27, 2026.
| Parameter | Data Rhythm | Quantify 4 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks β better | Every 21 months |
| Ads | Yes | No β better |
| In-app purchases | No β better | Yes |
| Devices | iPhone | iPhone, iPad, iPod β better |
| Requires iOS | 16.6 | 15.0 β better |
| Further details β not scored | ||
| Size | 17 MB | 89 MB |
| Age rating | 4+ | 4+ |
| Developer | Masaki Hayashi | KENJI KANEMOTO |
In-app purchases
Data Rhythm
No in-app purchases
Quantify 4
- Remove Ads$0.49
Questions
Is Data Rhythm free?
Is Quantify 4 free?
Do Data Rhythm or Quantify 4 have ads?
Which is updated more often, Data Rhythm or Quantify 4?
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