Quantify vs Mood Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Quantify
This app allows users to create custom data trackers for any aspect of their lives. Visualize your progress with real-time charts and analyze relationships between different variables. Securely sync your data across devices with cloud backup.
- Custom trackers (numeric, text, boolean, timestamp)
- Real-time line charts
- Correlation analysis with p-values
- Cloud sync across devices
- Secure sign-in with Apple/Google
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Quantify is a powerful data tracking tool designed for users who want complete control over what they measure and how they interpret it. Key Features: Custom Trackers: Create unlimited trackers with numeric, text, boolean, or timestamp inputs. Realtime Charts: Visualize your data instantly with line charts updated live. Correlation Analysis: Identify relationships between variables with built-in correlation scoring and p-value calculations. Cloud Sync: Data is securely stored and synced across devices via Firebase Firestore. Secure Sign-In: Log in using Apple or Google with Firebase Authentication.
Mood Tracker
Log your daily mood, habits, and memories in a single entry. Visualize your year through a clean calendar and insightful statistics, revealing patterns in your life over time. Attach photos to revisit cherished moments and gain a deeper understanding of your well-being.
- Daily mood tracking with notes
- Habit and routine tracking
- Photo attachment for memories
- Calendar timeline view
- Event logging
- Tagging and location context
- Interactive statistics
- Year in Pixels calendar
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Track your mood, habits, memories, and everyday life — all in one daily entry. Yian helps you build a complete picture of your year. Log your mood, write notes, track routines, attach photos, record events, and discover meaningful patterns through beautiful calendars and powerful insights. Every day becomes a small snapshot of your life. Over time, those snapshots reveal trends in your mood, habits, memories, and experiences. Features • Daily mood tracking (1–10) with rich notes and writing prompts • Dailies for tracking habits and recurring routines • Attach photos to preserve your memories • Weekly, monthly, yearly, and timeline calendar views • Year in Pixels calendar • Events with recurring support for appointments, trips, anniversaries, milestones, and more • Personalized insights, trends, and interactive statistics • Detailed breakdowns of your moods, habits, tags, locations, and more • Tags, bookmarks, and locations for better organization • Full-screen note editor designed for longer reflections • App Lock for additional privacy • Dark Mode for a comfortable experience day or night Whether you're keeping a mood journal, daily diary, gratitude journal, or simply recording life, Yian helps you see the bigger picture — one day at a time.
Screenshots
Verdict
The clearest difference is update cadence: Quantify at daily against Mood Tracker's every 3 weeks. Mood Tracker's advantage is ratings volume (8 vs 2) and iOS requirement (15.5 vs 17.6). On price, rating, review sentiment and ads 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Quantify against 5.0 for Mood Tracker. Both are backed by a comparable volume of ratings — 2 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Quantify ships an update daily, Mood Tracker every 3 weeks. The most recent releases landed on October 7, 2026 and October 22, 2026 respectively.
| Parameter | Quantify | Mood Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (8 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 8 — better |
| Update frequency | Daily — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.5 — better |
| Further details — not scored | ||
| Size | 20 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | Nicole Blair Stoddart | JungWoo Kwak |
Customer experience
Quantify
Mood Tracker
In-app purchases
Quantify
No in-app purchases
Mood Tracker
No in-app purchases









