# Linear BluePass vs Puppy Preparatory

The clearest difference is rating: Puppy Preparatory at 5.0 against Linear BluePass's 3.3. Linear BluePass's advantage is iOS requirement (11.0 vs 17.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Puppy Preparatory holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 7 and 3 respectively.

Linear BluePass ships an update every 3 months, Puppy Preparatory every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Linear BluePass | Puppy Preparatory |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (7 ratings)](https://appshunter.io/ios/app/linear-bluepass/id1273325949/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/puppy-preparatory/id6463144158/reviews)** |
| Number of ratings | **7** | 3 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 19 MB | 140 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nice North America LLC](https://appshunter.io/developer/656335127) | [iTrust Ventures LLC](https://appshunter.io/developer/1317767149) |

## What reviewers say

### Linear BluePass

[App page](https://appshunter.io/ios/app/linear-bluepass/id1273325949)

Transform your smartphone into a digital keycard for seamless access. Wave your phone or even your hand near compatible readers to unlock doors, eliminating the need for physical fobs or cards. It acts as a secure digital wallet for your credentials.

**Highlights:** Use smartphone as keycard, Wave hand for entry, Eliminates physical fobs/cards, Background operation, Holds multiple credentials, Secure credential management

**Features:** macOS Compatibility

**In-app purchases:** none


### Puppy Preparatory

[App page](https://appshunter.io/ios/app/puppy-preparatory/id6463144158)

Manage your pet's care with ease. Schedule appointments, get real-time updates including photos, communicate directly with staff, and handle payments securely. Experience top-tier pet services conveniently through the app.

**Highlights:** Schedule appointments, Receive status updates, View pet pictures, Chat with staff, Contactless payments

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

**In-app purchases:** none


## Frequently asked questions

### Is Linear BluePass free?

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

### Is Puppy Preparatory free?

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

### Which has better reviews, Linear BluePass or Puppy Preparatory?

Puppy Preparatory is rated higher. Linear BluePass averages 3.3 out of 5 from 7 ratings, while Puppy Preparatory averages 5.0 from 3 ratings.

### Do Linear BluePass or Puppy Preparatory have ads?

Neither Linear BluePass nor Puppy Preparatory shows ads.

### Which is updated more often, Linear BluePass or Puppy Preparatory?

Linear BluePass ships an update every 3 months, and Puppy Preparatory every 2 months. Most recently, Linear BluePass was updated on October 24, 2026 and Puppy Preparatory on October 25, 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.*