Best 66 Days Prep Apps

217+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated July 2026

From beginner-friendly picks to power-user tools, our 66 days prep list covers 217+ iPhone apps updated through July 2026. Compare ratings, prices, and screenshots in one place.

Compare top 66 Days Prep Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
166 Days - AI Interview Prep66 Days - AI Interview PrepFree4.9★ (228)NoYesSep 2026
2Becker’s CPA Exam ReviewBecker’s CPA Exam ReviewFree4.8★ (12K)NoNoSep 2026
3Great Learning: Online CoursesGreat Learning: Online CoursesFree4.1★ (102)NoNoSep 2026
4TeachTapTeachTapFree4.5★ (881)YesYesAug 2026
5PSI Test PrepPSI Test PrepFree4.8★ (4.1K)NoYesSep 2026
6ASWB Exam Prep Practice | 2026ASWB Exam Prep Practice | 2026Free4.8★ (2.5K)NoYesSep 2026
7Gauth: AI Study CompanionGauth: AI Study CompanionFree4.8★ (1.5M)NoYesSep 2026
8Peterson's Test PrepPeterson's Test PrepFree4.5★ (330)NoYesSep 2026

Top Picks for 66 Days Prep

66 Days - AI Interview Prep#1

66 Days - AI Interview Prep by Uru Technologies, LLC

AI Banking & Consulting Prep
Editor's Choice
📚 Education
4.9(228 ratings)
FreeIn-App Purchases
66 Days - AI Interview Prep screenshot 1
66 Days - AI Interview Prep screenshot 2
66 Days - AI Interview Prep screenshot 3
66 Days - AI Interview Prep screenshot 4
66 Days - AI Interview Prep screenshot 5

Master banking and consulting interviews with daily AI-powered practice. Track your progress on a 66-day journey with personalized feedback on technical, behavioral, and case questions. Improve your resume and gain confidence for top firms.

Becker’s CPA Exam Review#2

Becker’s CPA Exam Review by Becker Professional Development Corporation

Your CPA study companion
Strong Contender
📚 Education
4.8😐(12K ratings)
Free
Becker’s CPA Exam Review screenshot 1
Becker’s CPA Exam Review screenshot 2
Becker’s CPA Exam Review screenshot 3
Becker’s CPA Exam Review screenshot 4
Becker’s CPA Exam Review screenshot 5
Becker’s CPA Exam Review screenshot 6

Prepare for the CPA Exam with a comprehensive study and coaching system. Utilize adaptive learning technology, extensive practice questions, and expert-led lectures. Study anytime, anywhere with online and offline access, and sync your progress across devices.

What We Love

  • 💻 Great app for on-the-go studying
  • 📚 Useful lectures and content
  • 🎓 Helpful for CPA exam preparation

Room to Improve

  • 🐛 Frequent crashes and bugs
  • 📱 Interface issues on mobile devices
  • 💤 Lack of offline content availability
  • 🖋️ Poor annotation and note-taking experience

More 66 Days Prep apps to explore

FAQ about 66 Days Prep

What are the best 66 days prep apps for iPhone?
66 Days - AI Interview Prep tops our 66 days prep apps ranking as of July 2026, with a 4.9-star average from 228 App Store ratings, and it's free to download.
Yes — 20 of the top 66 days prep apps we rank are free to download, including 66 Days - AI Interview Prep and Becker’s CPA Exam Review.
66 Days - AI Interview Prep has no ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 217+ 66 days prep apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
This app is an AI-powered platform designed to help candidates prepare for interviews in the banking and consulting sectors. It offers daily structured practice sessions, personalized feedback from an AI coach, and progress tracking over a 66-day period.
Key features include an AI interview coach for feedback, daily drills covering behavioral, technical, and case questions, a 66-day progress heat map, a resume checker, and tools for technical accuracy like Excel and valuation aids.