# NubzAI vs Core Step Prep

The clearest difference is review sentiment: NubzAI at 100% against Core Step Prep's 0%. NubzAI also leads on rating (5.0 vs 4.0) and in-app purchases (none vs 6). Core Step Prep's advantage is update cadence (every 6 days vs fortnightly). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Core Step Prep sells 6 in-app purchases, starting at $9.99 per 7 days. NubzAI asks for nothing beyond the download.

NubzAI holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 100% of NubzAI's written reviews are positive against 0% of Core Step Prep's.

NubzAI ships an update fortnightly, Core Step Prep every 6 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | NubzAI | Core Step Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/nubzai/id6746172548/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/core-step-prep/id6752342447/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 19 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 17+ | 12+ |
| Developer | [Nubz LLC](https://appshunter.io/developer/1815596786) | [Terry Trent](https://appshunter.io/developer/1838959049) |

## What reviewers say

### NubzAI

[App page](https://appshunter.io/ios/app/nubzai/id6746172548)

An AI-powered diagnostic tool created by physicians and engineers to help medical professionals deliver faster, more accurate patient care. It represents a significant advancement in diagnostic medicine.

**Highlights:** AI-powered diagnostics, Assists physicians, Faster medical care, More accurate diagnoses, Developed by experts

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

**In-app purchases:** none


### Core Step Prep

[App page](https://appshunter.io/ios/app/core-step-prep/id6752342447)

This platform offers a high-yield question bank and study tools designed for USMLE Step 1 and Step 2 CK preparation. It focuses on recurring exam concepts with expert-crafted questions, actionable analytics, and realistic practice interfaces. Enhance your board prep with targeted study blocks and detailed explanations.

**Highlights:** High-yield USMLE-style questions, Step 1 + Step 2 CK coverage, Expert-crafted questions, Actionable analytics, Customizable quizzes, Realistic exam interface, Detailed explanations, Flashcards with spaced repetition

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| USMLE Step 1 Qbank - 1 wk access | $9.99 | per 7 days |
| USMLE Step 2 CK Qbank - 1 wk access | $9.99 | per 7 days |
| USMLE Step 1 Qbank - 1 mo. access | $29.99 | per month |
| USMLE Step 2 CK Qbank - 1 mo access | $29.99 | per month |
| USMLE Step 2 CK Qbank - 6 mo access | $99.99 | per 6 months |
| USMLE Step 1 Qbank - 6 mo access | $99.99 | per 6 months |


## Frequently asked questions

### Is NubzAI free?

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

### Is Core Step Prep free?

Core Step Prep is free to download, with in-app purchases available.

### Which has better reviews, NubzAI or Core Step Prep?

NubzAI is rated higher. NubzAI averages 5.0 out of 5 from 3 ratings, while Core Step Prep averages 4.0 from 2 ratings.

### Do NubzAI or Core Step Prep have ads?

Neither NubzAI nor Core Step Prep shows ads.

### Which is updated more often, NubzAI or Core Step Prep?

NubzAI ships an update fortnightly, and Core Step Prep every 6 days. Most recently, NubzAI was updated on October 30, 2026 and Core Step Prep 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.*