Comparison

PatientEngine vs Subzero Order

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PatientEngine

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
Read full description

Schedule Patients, on Demand. In todays world no one is is picking up the phone. Yet, “90% of people read a text message within the first 3 minutes” and 89% of your patients prefer them to phone calls and emails. So the next time your friend tells you they’re “just seeing this now” a day later, they’re lying. Take our word for it. We make texting easy, including enabling your current business phone number to text patients. With PatientEngine, you’ll be able to: Automatically follow up with leads via text, email, live call transfers, voicemail drops and Facebook messenger Create campaigns to bring back past patients Convert leads into patients Build Google reviews from satisfied customers Schedule and confirm appointments Save Time & Money Still making phone calls to confirm appointments or reach out to new customers? Today, phone calls are inefficient, and worse, ineffective. PatientEngine allows you and your patients to quickly exchange messages, without having to wait for a time when both parties are free. PatientEngine clients quickly see upwards of 50% time savings per staff member when using text vs the phone. Manage and Automate Your Lead Pipeline Tired of using messy spreadsheets to track all your leads? Or even worse you don’t know which lead came from which source and what part of the customer journey they’re in? Use our drag and drop, visual pipeline management tool to easily see what stage of the customer journey your leads are in, what source they came from as well as be able to automate follow up messages based on what stage they’re in! Calendar to Manage and Auto Book your Leads and Patients No longer do you have to chase leads to book their appointment. Now you can use our native calendar widget to have leads book themselves through your advertising campaigns and/or place it on your website so you can book more appointments from your website visitors. All of the confirmation and reminder messaging can now be completed automated and you can even create a voicemail reminder. This alone will drastically reduce your no show rates while simultaneously saving your staff hours per week of chasing and remind patients about their appointments!

About

Subzero Order

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
Read full description

Subzero Order App Overview: Subzero Order gives you the possibility to our customers to place, edit, and delete orders online; and keep them posted with the order status. Add a new shipping address. Get POD and all notifications about what is happening with their orders.

Screenshots

PatientEngine4 screens
Subzero Order4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard1 real difference · 9 level
PatientEngine versus Subzero Order: the parameters behind the verdict, then further details
ParameterPatientEngineSubzero Order
PriceFreeFree
Rating5.0 (4 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings4 — better1
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.615.2 — better
Further details — not scored
Size341 MB8 MB
Age rating4+17+
DeveloperMedSpa Advertising LLCJorge de la vega yabor

Customer experience

PatientEngine

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Subzero Order

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

PatientEngine

No in-app purchases

None

Subzero Order

No in-app purchases

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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