# MobilEM vs Preface

The clearest difference is rating: Preface at 5.0 against MobilEM's 3.6. Preface also leads on in-app purchases (none vs 10) and update cadence (every 3 weeks vs every 2 months). MobilEM's advantage is ratings volume (39 vs 2) and chart position (#49 vs unranked). On price, ads and device support there is nothing between them.

Both are free to download. MobilEM sells 10 in-app purchases, starting at $1.99 per year. Preface asks for nothing beyond the download.

Preface holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: MobilEM has 39 ratings behind it against 2, so its average is the more settled of the two.

MobilEM ships an update every 2 months, Preface every 3 weeks. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | MobilEM | Preface |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (39 ratings)](https://appshunter.io/ios/app/mobilem/id1474834329/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/preface-clinical-ai/id6747152709/reviews)** |
| Number of ratings | **39** | 2 |
| Positive reviews | 45.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#49** | — |
| Size | 205 MB | 9 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Emergency Medicine Residents' Association](https://appshunter.io/developer/331670150) | [Preface Health Inc.](https://appshunter.io/developer/1820084165) |

## What reviewers say

### MobilEM

[App page](https://appshunter.io/ios/app/mobilem/id1474834329)

**Currently charting:** #49 Top Grossing · Medical (US App Store)

Provides fast, evidence-based clinical guidance for emergency medicine professionals. Access updated recommendations on a wide range of topics, including antibiotics, toxicology, and critical care. Offers free content, individual purchases, and an all-access subscription.

**Highlights:** Evidence-based recommendations, Antibiotic and toxicology guidance, EKG and orthopedic injury protocols, Airway and pediatric emergency management, Critical care medication information, Fast navigation and universal search, Bookmarking and note-taking

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ventilator Mgmt. Subscription | $1.99 | per year |
| Pediatric Qwic | $1.99 | per year |
| MobilEm Airway Management | $4.99 | per year |
| Antibiotic Guide Subscription | $9.99 | per year |
| MobilEm Ortho Guide | $9.99 | per year |
| MobilEM Tox Guide | $9.99 | per year |
| PressorDex | $9.99 | per year |
| EKG Guide Subscription | $9.99 | per year |
| PEM Fundamentals Subscription | $9.99 | per year |
| MobilEm All Access Pass | $39.99 | per year |


### Preface

[App page](https://appshunter.io/ios/app/preface-clinical-ai/id6747152709)

This app automatically generates clinical notes from provider-patient conversations, eliminating the need for manual typing or dictation. It provides real-time charting, ICD-10, and CPT suggestions, allowing healthcare providers to finish documentation quickly and focus on patient care.

**Highlights:** Automatic clinical note generation, Real-time charting, ICD-10 and CPT suggestions, Hands-free documentation, Workflow integration, Fast and accurate note completion

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

**In-app purchases:** none


## Frequently asked questions

### Is MobilEM free?

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

### Is Preface free?

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

### Which has better reviews, MobilEM or Preface?

Preface is rated higher. MobilEM averages 3.6 out of 5 from 39 ratings, while Preface averages 5.0 from 2 ratings.

### Do MobilEM or Preface have ads?

Neither MobilEM nor Preface shows ads.

### Which is updated more often, MobilEM or Preface?

MobilEM ships an update every 2 months, and Preface every 3 weeks. Most recently, MobilEM was updated on November 8, 2026 and Preface on October 30, 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.*