Comparison

Solar PV Exam Revision vs DEA

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

Head to head
About

Solar PV Exam Revision

Learn and test your knowledge of over 500 UK road and traffic signs. This app is essential for new drivers preparing for their theory test and beneficial for all road users to enhance safety.

Highlights
  • Study over 500 road signs
  • Cover flow interface
  • Quiz yourself
  • Prepare for theory test
  • Track progress
  • Re-attempt incorrect questions
Features
Read full description

Solar PV and battery storage, from the exam to the install. Solar PV Exam Revision is a complete study and field companion for anyone working with domestic and commercial solar PV and electrical energy storage systems in the UK — installers, designers, electricians, assessors, and anyone preparing for a renewables certification. EXAM REVISION — 714 QUESTIONS • 19 topics across three sections: Shared Requirements, Energy Storage, and Solar PV • Every answer carries a written explanation citing its source — the IET Codes of Practice, BS 7671, or the MCS standards • Flash cards for fast recall, with self-rating • Timed mock exams drawing 30 questions from across the whole bank • Progress tracked per topic, plus a full history of every attempt • Voice-over, so you can revise hands-free TEN FIELD CALCULATORS • PV String Sizing • Inverter Sizing Ratio • Battery Sizing & Autonomy • Export Limitation Check (G98 / G99 / G100) • Cable Sizing • Voltage Drop • Adiabatic (CPC size) • Prospective Fault Current • R1 + R2 • Ohm's Law / Power Every result exports to PDF. 229 QUICK REFERENCE CARDS Earthing and bonding, the DC commissioning sequence, grid connection, isolation and switching, labels and signage, and MCS duties — all searchable, and all stored on the device so they work on site with no signal. FIELD TOOLS • DNO Connection — work out the G98 / G99 / SGI route • Earthing & PME — PME and TT decision tool • MCS Certification Duties — MIS 3002 / 3012 contractor duties • Commissioning records and site surveys, exported as PDF • CPD logger, tracking hours against your goals Free to download and try. A subscription unlocks the full 714-question bank, all ten calculators, every reference card, unlimited records, and PDF exports without a watermark. Privacy Policy: https://www.batterystorageprep.co.uk/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

DEA

Features
Read full description

PASS YOUR DEA-C01 AWS DATA ENGINEER ASSOCIATE EXAM 500+ practice questions covering all exam domains 5-minute study sessions that fit your busy schedule Track progress with daily streaks and analytics 94% first-attempt pass rate WHY GET CERTIFIED? Certified AWS Data Engineers earn up to $203K annually (Skillsoft 2024). Cloud data engineering jobs growing 15%+ faster than average. This associate-level certification opens doors to high-paying roles at top tech companies. WHAT YOU'LL MASTER: Data ingestion and transformation with AWS Glue, EMR, and Lambda Building and orchestrating ETL pipelines using AWS services Data store management with Redshift, S3, DynamoDB, and RDS Data operations, monitoring, and troubleshooting with CloudWatch Data security, encryption, governance, and IAM best practices Working with Kinesis, Athena, Lake Formation, and Step Functions STUDY ANYWHERE: Coffee breaks. Commutes. Lunch hours. Turn dead time into career growth. Master AWS data engineering while you wait in line or ride the train. Download now. Pass your exam. Boost your salary.

Screenshots

Solar PV Exam Revision4 screens
DEA3 screens

Verdict

The call

Solar PV Exam Revision and DEA are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Solar PV Exam Revision ships an update every 5 weeks, DEA every 2 months. The most recent releases landed on October 23, 2026 and October 9, 2026 respectively.

ScorecardNo meaningful differences
Solar PV Exam Revision versus DEA: the parameters behind the verdict, then further details
ParameterSolar PV Exam RevisionDEA
PriceFreeFree
Positive reviews77.8% of reviews—
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size26 MB28 MB
Age rating4+4+
DeveloperEknath KadamDavy Raitt

In-app purchases

None

Solar PV Exam Revision

No in-app purchases

None

DEA

No in-app purchases

Questions

Is Solar PV Exam Revision free?
Solar PV Exam Revision is free to download, with no in-app purchases.
Is DEA free?
DEA is free to download, with no in-app purchases.
Do Solar PV Exam Revision or DEA have ads?
Neither Solar PV Exam Revision nor DEA shows ads.
Which is updated more often, Solar PV Exam Revision or DEA?
Solar PV Exam Revision ships an update every 5 weeks, and DEA every 2 months. Most recently, Solar PV Exam Revision was updated on October 23, 2026 and DEA on October 9, 2026.

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