PE Prep Pro vs StampReady
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PE Prep Pro
This comprehensive exam preparation system offers over 1,400 realistic practice questions across 16 engineering disciplines. It provides detailed performance analytics to pinpoint weak areas and includes essential code summaries for offline study.
- 1,400+ realistic exam questions
- 16 major engineering disciplines
- Performance analytics
- Offline functionality
- Essential code summaries
Read full descriptionHide full description
PASS YOUR PE EXAM WITH CONFIDENCE - GUARANTEED RESULTS PE Prep Pro helps working engineers build confidence solving problems under exam conditions and make steady progress toward Professional Engineer licensure. Choose from more than 1,600 practice questions across 16 engineering disciplines. Work through civil, mechanical, electrical, chemical, structural, nuclear, petroleum, environmental, fire protection, control systems, mining, materials, naval architecture, industrial systems, and architectural engineering topics. Use Formula Focus to spend more time on calculation-heavy problems. Timed sets help you practice working through problems at pace, while step-by-step explanations show how to reach each answer. When you need a standard or formula, open the reference library for summaries of ASCE 7, ACI 318, AISC, ASME, IEEE, NFPA, API, OSHA, EPA, and other references. Performance tracking highlights strong topics and areas that need more work, making it easier to build a practical study plan around your exam date and engineering discipline. Continue practicing wherever your schedule takes you. MONEY-BACK GUARANTEE: We're so confident in PE Prep Pro that we offer a full refund if you're not completely satisfied.
StampReady
Master all 9 PE exam disciplines with adaptive study tools. Track your knowledge gaps and readiness for the engineering exam. Focus on genuine understanding, not just test-taking.
- Covers 9 PE exam disciplines
- 3,800+ study items
- Adaptive mastery tracking
- Bayesian mastery model
- Readiness Index score
- Knowledge Decay Tracking
- Cross-device sync
Read full descriptionHide full description
9 PE disciplines. 3,800+ study items. Adaptive mastery tracking. Know exactly when you're ready. The PE exam holds you to a professional standard. Your study material should too. StampReady puts all 9 NCEES PE exam disciplines in one app, with an adaptive engine that static prep materials can't match. 9 DISCIPLINES, WITHOUT PAYING 9X Traditional PE prep can run $1,500 or more. StampReady gives you unrestricted access to all 9 disciplines for a single subscription. - PE Civil: Construction, Geotechnical, Structural, Transportation, Water Resources & Environmental - PE Mechanical: HVAC & Refrigeration · Machine Design & Materials · Thermal & Fluids Systems - PE Electrical & Computer: Power 2,400+ original practice questions. 1,400+ flashcards. Every item written to mirror real exam depth. THE GOAL ISN'T PASSING. IT'S KNOWING. We don't train you to game a test. We build genuine command of engineering principles, codes, and design standards. When you truly know the material, passing becomes a natural result. ADAPTIVE, NOT PASSIVE Take a Baseline Diagnostic. The app maps your strengths and weaknesses across every domain, then builds sessions that close your gaps. A Bayesian mastery model tracks what you actually know — not just what you got right today, but what you'll retain on exam day. - Readiness Index — one score that tells you where you stand - Knowledge Decay Tracking — spaced repetition that flags concepts slipping from memory - Adaptive Gap Analysis — targeted sprint sessions for your weakest areas - Consultant-Style Analytics — domain skill maps, time benchmarks, personalized recommendations - Exam Countdown & Daily Streak - Cross-Device Sync via iCloud BUILT TO GET YOU THROUGH, NOT KEEP YOU SUBSCRIBED We don't offer lifetime access because if the tool works, you shouldn't need it for a lifetime. Hit your readiness benchmark, pass the exam, and move on with your career. PRIVACY-FIRST No account required. No email collected. No data sold. Anonymous analytics only. Your progress stays in your iCloud. SUBSCRIPTION DETAILS Free users get 10 questions per quiz and can preview flashcards across any discipline. Premium unlocks everything: - 3 Months: $99.99 ($33.33/month) - 6 Months: $149.99 ($25.00/month) All plans include a 14-day free trial. Payment is charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. You can manage subscriptions and turn off auto-renewal in your Account Settings. Any unused portion of a free trial is forfeited upon purchasing a subscription. Privacy Policy: https://invictera.com/privacy Terms of Service: https://invictera.com/terms.html Legal & AI Disclosures: https://invictera.com/disclosures.html StampReady is developed by Invictera LLC and is not affiliated with, endorsed by, or sponsored by NCEES. All certification names are trademarks of their respective owners. All content is original. Use of this app is subject to Apple's Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: StampReady at Free against PE Prep Pro's $34.99. StampReady also leads on rating (5.0 vs 1.7). PE Prep Pro's advantage is in-app purchases (none vs 2) and device support (3 vs 1). On ads 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
StampReady is free to download; PE Prep Pro costs $34.99 up front. StampReady sells 2 in-app purchases, starting at $99.99 per 3 months. PE Prep Pro asks for nothing beyond the download.
StampReady holds the better App Store score, 5.0 against 1.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
| Parameter | PE Prep Pro | StampReady |
|---|---|---|
| Price | $34.99 | Free — better |
| Rating | 1.7 (3 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 18.3 |
| Further details — not scored | ||
| Size | 43 MB | 29 MB |
| Age rating | +4 | 4+ |
| Developer | Examp, LLC | Invictera |
In-app purchases
PE Prep Pro
No in-app purchases
StampReady
- StampReady Pro14 Days trial$99.993 Months
- StampReady Pro14 Days trial$149.996 Months
Questions
Is PE Prep Pro free?
Is StampReady free?
Which has better reviews, PE Prep Pro or StampReady?
Do PE Prep Pro or StampReady have ads?
Other comparisons















