Comparison

Solar PV NABCEP Exam Prep vs Chartle

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

Head to head
About

Solar PV NABCEP Exam Prep

Features
Read full description

Pass your Solar PV Exam with confidence. Solar PV NABCEP Exam Prep gives you 750+ realistic practice questions with clear, detailed explanations for every answer. COVERS EVERY TOPIC PV Fundamentals, System Components, Site Assessment, System Design, Installation, NEC Code — and more. WHY Solar PV PREP • 750+ exam-style questions, written and reviewed for accuracy • A detailed explanation for every answer — understand WHY • Realistic mock exams that mirror the real test • Track your accuracy by subject with smart analytics • A personalized study plan that keeps you on pace • Daily reminders + study anytime, even offline Whether it's your first attempt or a retake, our questions and explanations help you master the material and pass on your first try. SUBSCRIPTION Start free, then unlock everything. Weekly $4.99, Monthly $12.99, Yearly $39.99, or a one-time Lifetime unlock $79.99. Subscriptions auto-renew unless cancelled at least 24 hours before the period ends; manage or cancel in your App Store account settings. Disclaimer: This app is an independent study tool and is not affiliated with, endorsed by, or associated with the North American Board of Certified Energy Practitioners (NABCEP) or the National Fire Protection Association (NFPA). Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://flysky-privacy.pages.dev

About

Chartle

Learn to interpret stock price charts through interactive quizzes. Practice identifying and predicting outcomes of various candlestick patterns using real historical market data. Build a daily habit of chart analysis to improve your trading understanding.

Highlights
  • Interactive chart pattern quizzes
  • Real historical market data
  • Pattern outcome prediction
  • Daily challenges and streaks
  • Progress tracking with mastery ring
  • Lessons on pattern formation and failure
Features
Read full description

Chartle teaches you to read price charts, five minutes at a time. A real historical chart appears, cut off at the moment a pattern completed. You call what happens next, or you name the shape you are looking at. Then the outcome candles animate in, the pattern is named, and one line explains why price behaved the way it did. Five questions make a session. About five minutes. HOW IT WORKS Predict first, then find out. You commit to an answer before the chart reveals itself. Reading about a pattern and recognising one under pressure are not the same skill, and only the second one is worth having. Real market charts. 245 historical windows across 49 patterns, cut from real price history rather than drawn as textbook illustrations. Real charts are messy. Reading a messy one is the actual job. Measured, not asserted. Every pattern in Chartle carries behaviour measured across 3.2 million labelled occurrences in real market data. Where a pattern is weaker than the others, the app says so instead of hiding it. Three kinds of question. Predict the direction, name the pattern from four options, or confirm whether a chart is what it claims to be. Naming is only asked about patterns you have already met. WHAT IS INSIDE 40+ patterns, in four families. Candlestick — hammer, hanging man, shooting star, engulfing, harami, kicker, marubozu, belt hold, dark cloud cover, piercing line, morning and evening star, dragonfly and gravestone doji, tweezers, three white soldiers, three black crows. Reversal — head and shoulders, inverse head and shoulders, double top, double bottom, triple top, triple bottom. Continuation — bull flag, bear flag, ascending triangle, descending triangle, symmetrical triangle, rising and falling three methods, Tasuki gaps. Breakout — trendline breakout, trendline breakdown, support bounce, resistance rejection. Every pattern has a lesson: how it forms, what to check before you trust it, and when it fails. Lessons are written in your language, not machine translated. A DAILY HABIT One daily challenge the same five charts for everyone, every day. A streak that counts the days you turned up. Levels that reward showing up rather than being right. A mastery ring that measures how much of the catalogue you have covered, so it only ever moves forward. WHAT CHARTLE IS NOT No signals. No tips. No buy or sell calls. No entry, stop or target levels Chartle filters those out of its own charts on purpose. It is not a broker, a portfolio tracker or a trading terminal, and it never tells anyone what to buy. It teaches you to recognize what you are looking at. What you do with that is yours. FREE AND PLUS Today's challenge is free, every day, and you do not need a card to start. Chartle Plus adds unlimited practice sessions and lets you drill any single pattern on demand. Terms of use: https://chartleapp.com/terms Privacy policy: https://chartleapp.com/privacy

Screenshots

Solar PV NABCEP Exam Prep4 screens
Chartle4 screens

Verdict

The call

The clearest difference is update cadence: Chartle at every 2 days against Solar PV NABCEP Exam Prep's every 3 months. On price, ads, in-app purchases 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. Solar PV NABCEP Exam Prep sells 4 in-app purchases, starting at $6.99 per 7 days and Chartle sells 1 in-app purchase, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Solar PV NABCEP Exam Prep ships an update every 3 months, Chartle every 2 days. The most recent releases landed on October 2, 2026 and October 8, 2026 respectively.

Scorecard1 real difference · 9 level
Solar PV NABCEP Exam Prep versus Chartle: the parameters behind the verdict, then further details
ParameterSolar PV NABCEP Exam PrepChartle
PriceFreeFree
Rating—4.9 (40 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—40 — better
Update frequencyEvery 3 monthsEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size24 MB64 MB
Age rating4+17+
DeveloperFLY SKY PTY LTDBuffalo Studio

In-app purchases

4 purchases

Solar PV NABCEP Exam Prep

Subscriptions3
  • Solar PV Weekly$6.997 Days
  • Solar PV Monthly$16.991 Month
  • Solar PV Yearly$39.991 Year
One-time1
  • Solar PV Lifetime$79.99
1 purchases

Chartle

Subscriptions1
  • Chartle Pro3 Days trial$6.997 Days

Questions

Is Solar PV NABCEP Exam Prep free?
Solar PV NABCEP Exam Prep is free to download, with in-app purchases available.
Is Chartle free?
Chartle is free to download, with in-app purchases available.
Do Solar PV NABCEP Exam Prep or Chartle have ads?
Neither Solar PV NABCEP Exam Prep nor Chartle shows ads.
Which is updated more often, Solar PV NABCEP Exam Prep or Chartle?
Solar PV NABCEP Exam Prep ships an update every 3 months, and Chartle every 2 days. Most recently, Solar PV NABCEP Exam Prep was updated on October 2, 2026 and Chartle on October 8, 2026.

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