# PatientEngine vs Subzero Order

The clearest difference is ratings volume: PatientEngine at 4 against Subzero Order's 1. On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for PatientEngine against 5.0 for Subzero Order. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

PatientEngine ships an update every 2 months, Subzero Order every 3 weeks. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | PatientEngine | Subzero Order |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/patientengine/id1453452511/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/subzero-order/id1587181509/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 341 MB | 8 MB |
| Requires iOS | 16.6 | **15.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [MedSpa Advertising LLC](https://appshunter.io/developer/1453452510) | [Jorge de la vega yabor](https://appshunter.io/developer/1502940647) |

## What reviewers say

### PatientEngine

[App page](https://appshunter.io/ios/app/patientengine/id1453452511)

Streamline patient communication and appointment scheduling with automated text messaging and a visual lead pipeline. Convert leads, re-engage past patients, and reduce no-shows with efficient, automated follow-ups.

**Highlights:** Automated text message follow-ups, Campaigns for past patients, Lead conversion tools, Google review generation, Appointment scheduling and confirmation, Visual lead pipeline management, Auto-booking calendar widget

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

**In-app purchases:** none


### Subzero Order

[App page](https://appshunter.io/ios/app/subzero-order/id1587181509)

Manage your dry ice orders with ease. Place, edit, and delete orders online, add new shipping addresses, and track your order status in real-time. Receive notifications and proof of delivery for all your orders.

**Highlights:** Place, edit, and delete orders, Add new shipping addresses, Track order status, Receive proof of delivery, Get order notifications

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PatientEngine free?

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

### Is Subzero Order free?

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

### Which has better reviews, PatientEngine or Subzero Order?

PatientEngine and Subzero Order are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do PatientEngine or Subzero Order have ads?

Neither PatientEngine nor Subzero Order shows ads.

### Which is updated more often, PatientEngine or Subzero Order?

PatientEngine ships an update every 2 months, and Subzero Order every 3 weeks. Most recently, PatientEngine was updated on October 3, 2026 and Subzero Order on October 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.*