# Quantify vs LifeInLines

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.

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.

## The numbers

| Metric | Quantify | LifeInLines |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/quantify-optimize-life/id6480232018/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/lifeinlines/id6749126520/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 5 days |
| Monetization | **Free** | Free with in-app purchases |
| Size | 20 MB | 3 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nicole Blair Stoddart](https://appshunter.io/developer/1738530435) | [Stattra Dataworks LLC](https://appshunter.io/developer/1828846627) |

## What reviewers say

### Quantify

[App page](https://appshunter.io/ios/app/quantify-optimize-life/id6480232018)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### LifeInLines

[App page](https://appshunter.io/ios/app/lifeinlines/id6749126520)

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.

**Highlights:** Customizable metrics and groups, Personalized units, colors, and icons, Visual trend analysis and insights, Goal setting and progress tracking, Built-in privacy features

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP Upgrade | $7.99 | one-time |


## Frequently asked questions

### Is Quantify free?

Quantify is free to download, with no in-app purchases.

### Is LifeInLines free?

LifeInLines is free to download, with in-app purchases available.

### Which has better reviews, Quantify or LifeInLines?

Quantify and LifeInLines are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.

### Do Quantify or LifeInLines have ads?

Neither Quantify nor LifeInLines shows ads.

### Which is updated more often, Quantify or LifeInLines?

Quantify ships an update daily, and LifeInLines every 5 days. Most recently, Quantify was updated on October 7, 2026 and LifeInLines on October 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*