# Line vs Inertia Pro

The clearest difference is review sentiment: Inertia Pro at 100% against Line's 25%. Inertia Pro also leads on rating (4.9 vs 3.1) and update cadence (weekly vs every 2 months). Line's advantage is price (Free vs $69.99) and in-app purchases (none vs 2). On ads and device support there is nothing between them.

Line is free to download; Inertia Pro costs $69.99 up front. Inertia Pro sells 2 one-off in-app purchases. Line asks for nothing beyond the download.

Inertia Pro holds the better App Store score, 4.9 against 3.1. Both are backed by a comparable volume of ratings — 7 and 31 respectively. Written reviews point the same way: 25% of Line's written reviews are positive against 100% of Inertia Pro's.

Line ships an update every 2 months, Inertia Pro weekly. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Line | Inertia Pro |
| --- | --- | --- |
| Price | **Free** | $69.99 |
| Rating | [3.1 (7 ratings)](https://appshunter.io/ios/app/line-us/id1315572437/reviews) | **[4.9 (31 ratings)](https://appshunter.io/ios/app/inertia-pro/id1540387087/reviews)** |
| Number of ratings | 7 | **31** |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#99** |
| Size | 30 MB | 14 MB |
| Requires iOS | **8.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 12+ | 17+ |
| Developer | [DRP London Limited](https://appshunter.io/developer/1315572436) | [Marc Kerstein](https://appshunter.io/developer/821255617) |

## What reviewers say

### Line

[App page](https://appshunter.io/ios/app/line-us/id1315572437)

This app allows users to create, save, and share digital sketches and doodles. It connects to a robot drawing arm to bring digital creations to life on paper, offering tools for scaling, rotating, and combining drawings. Users can also trace photos and share their artwork in a cloud-based sketchbook.

**Highlights:** Create, save, and share digital sketches, Draw with finger, Apple Pencil, or stylus, Scale, rotate, and combine drawings, Trace photos with tracing mode, Cloud sketchbooks for sharing, Code control with Scratch, Python, Javascript

**Features:** macOS Compatibility

**In-app purchases:** none


### Inertia Pro

[App page](https://appshunter.io/ios/app/inertia-pro/id1540387087)

**Currently charting:** #99 Top Paid · Entertainment (US App Store)

This app allows users to force any content on any website, including social media posts, products, and text. It's integrated into a web browser for seamless use during performances. Additional paid features enable editing text and using the app on borrowed phones.

**Highlights:** Force any Instagram photo or video, Force specific items on eBay or Amazon, Force Netflix movies or news headlines, Edit text on any website, Use on borrowed phones with Momentum add-on, Remote performance capabilities via Xeno Sites

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Edit Mode | $12.99 | one-time |
| Momentum | $59.99 | one-time |


## Frequently asked questions

### Is Line free?

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

### Is Inertia Pro free?

Inertia Pro costs $69.99, and also offers in-app purchases.

### Which has better reviews, Line or Inertia Pro?

Inertia Pro is rated higher. Line averages 3.1 out of 5 from 7 ratings, while Inertia Pro averages 4.9 from 31 ratings.

### Do Line or Inertia Pro have ads?

Neither Line nor Inertia Pro shows ads.

### Which is updated more often, Line or Inertia Pro?

Line ships an update every 2 months, and Inertia Pro weekly. Most recently, Line was updated on November 6, 2026 and Inertia Pro on November 7, 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.*