Comparison

AP Physics C, 2e vs LumiSource

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

Head to head
About

AP Physics C, 2e

Read full description

Practice! Practice! Practice! Essential practice questions for AP Physics C ― updated to reflect the latest exam. Organized for easy reference and tailored to help you maximize your study time, 500 AP Physics C Questions to Know by Test Day, 2e offers extensive review and rigorous practice. The 5 Steps team brings you the vital resources you need to help you score that 5! -500 AP-style questions and answers referenced to core AP materials -NEW: A 20-question diagnostic quiz -Questions that parallel the topic, format, and degree of difficulty of your AP exam -Comprehensive, easy-to-understand explanations -Ideal and effective last-minute practice This free application includes all questions in Chapter 1 - Kinematics (1-50). The remaining 450 questions are available with a subscription. This app has been designed for the iPhone/iPad with interactive features. -Study/Timed Exam/Bookmark modes are available for review. -In the Study mode, check the answers as you tackle the questions. -In the Timed Exam mode, time yourself and review the answers after the time is up. -In the Bookmark mode, review only the questions you have flagged for further study. -File away correctly answered questions after each practice test. -Opt to include questions from previous quizzes. -Store practice test scores to track your progress. -Save your work to the iCloud to access on multiple devices. About the Authors Hugh Henderson teaches AP Physics at Booker T. Washington School for the Performing and Visual Arts in Dallas and has been an educator for more than 30 years. He is a former member of the AP Test Development Committee and was an AP Physics Reader for more than a dozen years. Jeff Steele is an adjunct instructor in physics at Randolph College. He holds a bachelor's degree in nuclear engineering from UC Santa Barbara and a master's degree in physics education from the University of Virginia. He has taught physics at Randolph College, University of Lynchburg and the University of Virginia. Expanded Apps Privacy Policy: https://expandedapps.com/privacy-policy/ Expanded Apps Terms of Use: https://expandedapps.com/terms-of-use/

About

LumiSource

Prepare for AP exams with condensed study guides and realistic practice tests. This app offers mobile-optimized content for efficient review anytime, anywhere. It currently supports over 10 AP subjects.

Highlights
  • Condensed study guides
  • Realistic practice tests
  • Detailed answer breakdowns
  • Mobile-optimized for on-the-go study
  • Supports over 10 AP subjects
Features
Read full description

Crush your AP exams and the SAT with LumiSource, your all-in-one review hub. Whether you're reviewing last-minute or planning ahead, LumiSource helps you prep faster and smarter with: Study Guides: condensed, high-yield content made for rapid review Practice Questions: realistic questions with detailed answer breakdowns SAT Prep: targeted review and practice to help you boost your score Mobile-optimized: study anywhere, anytime Now supporting the SAT and 22 AP courses. Start reviewing today with LumiSource.

Screenshots

AP Physics C, 2e4 screens
LumiSource4 screens

Verdict

The call

The clearest difference is in-app purchases: LumiSource at none against AP Physics C, 2e's 5. LumiSource also leads on update cadence (every 3 months vs every 7 months). On price, ads, device support and iOS requirement 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. AP Physics C, 2e sells 5 in-app purchases, starting at $5.99 per 7 days. LumiSource asks for nothing beyond the download.

UpkeepUpdate frequency

AP Physics C, 2e ships an update every 7 months, LumiSource every 3 months. The most recent releases landed on October 4, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 8 level
AP Physics C, 2e versus LumiSource: the parameters behind the verdict, then further details
ParameterAP Physics C, 2eLumiSource
PriceFreeFree
Rating—4.8 (91 ratings) — better
Positive reviews—93.3% of reviews
Number of ratings—91 — better
Update frequencyEvery 7 monthsEvery 3 months — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size57 MB81 MB
Age rating4+4+
DeveloperExpanded AppsCaseHippo Inc

In-app purchases

5 purchases

AP Physics C, 2e

Subscriptions4
  • 1 Week$5.997 Days
  • 1 Week$6.997 Days
  • 1 Month$17.991 Month
Show 1 more
  • 1 Year$69.991 Year
One-time1
  • AP Physics C, 2e - Test Prep$15.99
None

LumiSource

No in-app purchases

Questions

Is AP Physics C, 2e free?
AP Physics C, 2e is free to download, with in-app purchases available.
Is LumiSource free?
LumiSource is free to download, with no in-app purchases.
Do AP Physics C, 2e or LumiSource have ads?
Neither AP Physics C, 2e nor LumiSource shows ads.
Which is updated more often, AP Physics C, 2e or LumiSource?
AP Physics C, 2e ships an update every 7 months, and LumiSource every 3 months. Most recently, AP Physics C, 2e was updated on October 4, 2026 and LumiSource on October 16, 2026.

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