# MD on Call vs NbN3

The clearest difference is price: NbN3 at Free against MD on Call's $9.99. NbN3 also leads on update cadence (every 2 months vs every 4 months) and ratings volume (7 vs 1). MD on Call's advantage is rating (5.0 vs 4.1) and review sentiment (78% vs 42%). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

NbN3 is free to download; MD on Call costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MD on Call holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: NbN3 has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 78% of MD on Call's written reviews are positive against 42% of NbN3's.

MD on Call ships an update every 4 months, NbN3 every 2 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | MD on Call | NbN3 |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/md-on-call/id333195169/reviews)** | [4.1 (7 ratings)](https://appshunter.io/ios/app/nbn3/id927272449/reviews) |
| Number of ratings | 1 | **7** |
| Positive reviews | **78.1% of reviews** | 42.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 17 MB | 24 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Messil inc.](https://appshunter.io/developer/333195172) | [European College of Neuropsychopharmacology (ECNP)](https://appshunter.io/developer/687721422) |

## What reviewers say

### MD on Call

[App page](https://appshunter.io/ios/app/md-on-call/id333195169)

This app provides quick, practical guidance for physicians, residents, and medical students to manage common on-call issues. It offers concise tips for acute assessment and management, helping users efficiently address patient problems without needing to consult lengthy textbooks.

**Highlights:** Quick assessment and management tips, Covers 26 frequent on-call situations, Management of common electrolyte abnormalities, ECG interpretation with examples, Guidance on writing medical orders, Searchable by acronyms and keywords

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Handy checklist for on-duty
- 👍 Useful in ER
- 👍 Great app design
- 👍 Packed with useful info
- 👍 Pragmatic content

**What reviewers complain about**

- 👎 Could cover more content
- 👎 Needs update for iPhone X
- 👎 Content and references outdated
- 👎 Needs a refresh
- 👎 More conditions could be added

**Reported bugs**

- Incompatible with iPhone X
- Incorrect advice regarding Metaclopramide
- Incorrect TDF to morphine conversion data

**Requested features**

- Cover more content
- Update for iPhone X compatibility
- Revise content and references for up-to-date information
- Add more conditions
- Include common diseases and treatments


### NbN3

[App page](https://appshunter.io/ios/app/nbn3/id927272449)

This app provides a neuroscience-based nomenclature for psychotropic medications, reflecting current knowledge and aiding clinicians in making informed prescription decisions. It includes detailed information on pharmacology, mode of action, indications, efficacy, side effects, practical notes, and neurobiology.

**Highlights:** Neuroscience-based nomenclature, Pharmacology and mode of action, Approved indications, Efficacy and side effects, Practical clinical notes, Neurobiology details, Links to IUPHAR

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

**In-app purchases:** none


## Frequently asked questions

### Is MD on Call free?

MD on Call costs $9.99, with no in-app purchases.

### Is NbN3 free?

NbN3 is free to download, with no in-app purchases.

### Which has better reviews, MD on Call or NbN3?

MD on Call is rated higher. MD on Call averages 5.0 out of 5 from 1 ratings, while NbN3 averages 4.1 from 7 ratings.

### Do MD on Call or NbN3 have ads?

Neither MD on Call nor NbN3 shows ads.

### Which is updated more often, MD on Call or NbN3?

MD on Call ships an update every 4 months, and NbN3 every 2 months. Most recently, MD on Call was updated on October 23, 2026 and NbN3 on October 24, 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.*