Quantify vs LifeInLines
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.
LifeInLines
Create a personalized system to track any aspect of your life, from health to business. Design custom metrics, groups, and insights to visualize your progress and understand your patterns. Tailor units, colors, and icons to build a tracking experience that fits your unique needs.
- Customizable metrics and groups
- Personalized units, colors, and icons
- Visual trend analysis and insights
- Goal setting and progress tracking
- Built-in privacy features
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LifeInLines isn’t just a tracker — it’s a blank canvas for your data. Whether you’re optimizing your health, managing your business, or just curious about the patterns that shape your life, LifeInLines gives you the tools to create your own system, your way. Track What Matters. However It Matters. Design a personalized experience using custom: • Metrics – Track anything from caffeine intake to customer leads • Groups – Organize metrics by life area, project, or priority • Insights – Discover trends over time with customizable visual analysis • Goals – Watch yourself progress in real time Customize Everything • Create your own units (e.g., “cups,” “hours,” “mood level”) • Personalize with custom colors and icons • Set up data your way — no predefined categories or limits • Keep your secrets, and track them too — built-in privacy features keep your private metrics safe Built for People Who Track Differently LifeInLines is made for: • Self-improvement obsessives who want total control • Small business owners tracking operations, habits, or KPIs • Anyone who knows their life runs on data — and wants to own it
Screenshots
Verdict
The clearest difference is in-app purchases: Quantify at none against LifeInLines's 1. Quantify also leads on update cadence (daily vs every 5 days). On price, rating, review sentiment and ratings volume 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. LifeInLines sells 1 one-off in-app purchase. Quantify asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Quantify against 5.0 for LifeInLines. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Quantify ships an update daily, LifeInLines every 5 days. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.
| Parameter | Quantify | LifeInLines |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (3 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 2 | 3 — better |
| Update frequency | Daily — better | Every 5 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 | 17.6 |
| Further details — not scored | ||
| Size | 20 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Nicole Blair Stoddart | Stattra Dataworks LLC |
Customer experience
Quantify
LifeInLines
In-app purchases
Quantify
No in-app purchases
LifeInLines
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