Comparison

NubzAI vs Core Step Prep

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

Head to head
About

NubzAI

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
Read full description

Nubz is an Al-powered health assistant designed to be the first place you go to for trusted health information - before, between, and after you see a healthcare professional. Developed in collaboration between Board-Certified Physicians and Ivy League Engineers, NUBZ represents a breakthrough in the field of diagnostic medicine.

About

Core Step Prep

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
Read full description

CoreStepPrep brings your USMLE Step 1 and Step 2 study workflow to iPhone, iPad, and native Mac. Build focused question blocks, study detailed explanations, and connect practice with notes, flashcards, reference documents, and progress insights. Your eligible access and study activity stay connected with the CoreStepPrep website. PRACTICE WITH PURPOSE • Create Tutor or Exam blocks by bank, system, discipline, difficulty, and question status • Use Smart blocks, saved presets, question IDs, and assigned curriculum blocks • Keep notes, bookmarks, highlights, scratch paper, calculator, and reference labs close to your questions • Continue already-loaded sessions when your connection is interrupted, with visible save and recovery status • Review correct, incorrect, and unanswered questions, then build focused remediation practice BUILD YOUR STUDY LIBRARY • Search and organize notes with folders and tags; export CSV, Markdown, or PDF • Review and manage flashcards, and export eligible personal or premium Anki decks • Read high-yield documents with contents, search, zoom, favorites, and saved reading progress • Search Core Concepts and move between questions and related explanations UNDERSTAND YOUR PROGRESS • Resume your work from Today and follow recent activity • Explore system and discipline results, accuracy, usage, and available peer comparisons • Use native USMLE, Shelf/CMS, and osteopathic prediction tools • Browse session history and revisit completed reviews MADE FOR APPLE DEVICES • A compact iPhone workspace and adaptive iPad and Mac sidebars • Native touch, pointer, and keyboard controls • Handoff, shortcuts, and links that return to your study context • Widgets and Live Activities on supported iPhone and iPad devices • Question of the Day, Live Quiz, and contextual support Some content and features require eligible CoreStepPrep access. Step 1 and Step 2 access may be purchased separately. Subscription availability and terms are shown before purchase. Internet access is required to load new content and synchronize changes; offline continuation applies to sessions already loaded on that device. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://corestepprep.com/#/privacy

Screenshots

NubzAI3 screens
Core Step Prep3 screens

Verdict

The call

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.

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard6 real differences · 4 level
NubzAI versus Core Step Prep: the parameters behind the verdict, then further details
ParameterNubzAICore Step Prep
PriceFreeFree
Rating5.0 (3 ratings) — better4.0 (2 ratings)
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings3 — better2
Update frequencyFortnightlyEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS14.0 — better26.0
Further details — not scored
Size5 MB19 MB
Age rating17+12+
DeveloperNubz LLCTerry Trent

Customer experience

NubzAI

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Core Step Prep

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

None

NubzAI

No in-app purchases

6 purchases

Core Step Prep

Subscriptions6
  • USMLE Step 1 Qbank - 1 wk access$9.997 Days
  • USMLE Step 2 CK Qbank - 1 wk access$9.997 Days
  • USMLE Step 1 Qbank - 1 mo. access$29.991 Month
Show 3 more
  • USMLE Step 2 CK Qbank - 1 mo access$29.991 Month
  • USMLE Step 2 CK Qbank - 6 mo access$99.996 Months
  • USMLE Step 1 Qbank - 6 mo access$99.996 Months

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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