# LPI App vs Wrist PDF

LPI App and Wrist PDF both sit at 3.0 stars, but that hides the real split: 100% of LPI App's written reviews are positive against 0% of Wrist PDF's. LPI App also leads on in-app purchases (none vs 3). Wrist PDF's advantage is update cadence (every 11 days vs every 5 weeks). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Wrist PDF sells 3 in-app purchases, starting at $3.99 per 7 days. LPI App asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.0 for LPI App against 3.0 for Wrist PDF. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews are what separate them: 100% of LPI App's written reviews are positive against 0% of Wrist PDF's.

LPI App ships an update every 5 weeks, Wrist PDF every 11 days. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | LPI App | Wrist PDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/lpi-app/id1180461683/reviews) | [3.0 (2 ratings)](https://appshunter.io/ios/app/wrist-pdf-pdf-reader-and-viewer/id6756314530/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 11 days** |
| Monetization | **Free** | Subscription |
| Size | 143 MB | 52 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Lightning Protection International Pty Ltd](https://appshunter.io/developer/1180461682) | [Mr Siddharth](https://appshunter.io/developer/1859651378) |

## What reviewers say

### LPI App

[App page](https://appshunter.io/ios/app/lpi-app/id1180461683)

This utility app connects with specific Bluetooth devices and controllers to track and display historical and current status information. It provides insights into key attributes monitored by the connected hardware.

**Highlights:** Monitors historical status, Tracks current status, Works with LPI Bluetooth devices, Supports AIM controllers, Displays key attributes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Wrist PDF

[App page](https://appshunter.io/ios/app/wrist-pdf-pdf-reader-and-viewer/id6756314530)

Access and read PDF files, documents, and notes directly from your smartwatch. Enjoy fast loading, smooth navigation, and a clean interface for on-the-go document management. Seamlessly integrates with your paired phone for quick access to essential information.

**Highlights:** View PDFs on smartwatch, Fast PDF loading, Smooth page navigation, Supports documents and notes, Clean, wrist-friendly interface, Works with paired phone

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $3.99 | per 7 days |
| Monthly plan | $9.99 | per month |
| Yearly Plan | $49.99 | per year |


## Frequently asked questions

### Is LPI App free?

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

### Is Wrist PDF free?

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

### Which has better reviews, LPI App or Wrist PDF?

LPI App and Wrist PDF are both rated 3.0 out of 5 on the App Store, from 4 and 2 ratings respectively.

### Do LPI App or Wrist PDF have ads?

Neither LPI App nor Wrist PDF shows ads.

### Which is updated more often, LPI App or Wrist PDF?

LPI App ships an update every 5 weeks, and Wrist PDF every 11 days. Most recently, LPI App was updated on November 2, 2026 and Wrist PDF on November 5, 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.*