Comparison

RetrofitReady vs Basic Theory Test Lite

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

Head to head
About

RetrofitReady

This app aids Domestic Energy Assessor candidates and professionals with exam preparation, technical calculations, and quick reference guides for RdSAP and EPC standards. It includes a comprehensive toolkit for site surveys, job tracking, and professional development logging.

Highlights
  • 360 DEA revision questions
  • Topic-specific practice tests
  • Multiple calculators (ventilation, U-value, insulation)
  • Searchable RdSAP and EPC glossary
  • Site survey and ventilation checklists
  • Assessment register and CPD log
Features
Read full description

RetrofitReady: DEA is a focused study and field-support app for Domestic Energy Assessor candidates and working assessors. Use it to prepare for DEA assessment topics, practise realistic questions, check technical figures, and keep common RdSAP, EPC and retrofit references close to hand. Exam Prep - 360 DEA revision questions across the full question bank - Topic practice for safe and professional assessment, preparing for domestic energy assessments, undertaking assessments, and producing and explaining EPCs - Supplement question sets for deeper practice - Full mock test covering the complete syllabus - Multiple-answer support, review tools, sorted question review, and voice-over support Calculators - Ventilation calculator for Approved Document F and existing dwellings - U-value calculator using BS EN ISO 6946 style build-ups - Insulation thickness calculator for target U-values - Heat loss / HTC calculator for fabric and ventilation performance - Condensation risk calculator using Glaser / BS EN ISO 13788 principles - Cost, carbon and payback calculator for fuel savings and retrofit measures - PDF/share reports from calculator results where supported Quick Reference - Searchable RdSAP and EPC glossary - EPC bands and SAP score ranges - RdSAP discipline, defaults and evidence reminders - EPC issue and QA checks - Ventilation rates and retrofit triggers - U-value targets, fuel/carbon factors, thermal conductivity and building pathology notes DEA Toolbox - Site survey checklist for property data capture and audit-ready notes - Ventilation assessment checklist for inspection evidence - Assessment register for survey, lodgement and EPC job tracking - Accreditation and insurance register - CPD log with hours, reminders and PDF export - Exam countdown for assessment planning Built for revision and professional workflow RetrofitReady: DEA brings exam practice, quick reference, calculators and field records into one app. It is designed as a study and workflow aid and does not replace approved RdSAP methodology, assessor-body guidance, scheme QA requirements, or professional judgement. Privacy Policy: https://www.webrichsoftware.com/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Basic Theory Test Lite

Prepare for your Singapore driving license theory test with a simulated exam. This app offers interactive practice questions covering road rules, signs, and car controls, providing immediate feedback to help you pass.

Highlights
  • Simulated mock tests
  • 300 practice questions
  • Covers road rules and signs
  • Immediate feedback
  • Interactive learning
  • Covers car parts and controls
Features
Read full description

The first step to obtaining a driving licence in Singapore is to sit the Basic Theory Test (BTT) regardless of whether you are a local citizen, permanent resident or foreigner. In the actual BTT, there are 50 multiple-choice questions (MCQ) to be completed within 50 minutes. You need to achieve at least 45 correct answers (90%) in order to pass the test. The iPhone BTT app has a mock test designed to simulate the timing and nature of the actual test. The most effective way is to prepare for the BTT is to use the BTT iPhone app. This study method is convenient and interactive and gives immediate feedback as your knowledge and understanding of Singaporean road rules and regulations as well as traffic signs and signals. In addition code of conduct and car parts and controls are also covered.

Screenshots

RetrofitReady4 screens
Basic Theory Test Lite4 screens

Verdict

The call

The clearest difference is review sentiment: RetrofitReady at 90% against Basic Theory Test Lite's 53%. RetrofitReady also leads on in-app purchases (none vs 1). On price, update cadence, ads 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. Basic Theory Test Lite sells 1 one-off in-app purchase. RetrofitReady asks for nothing beyond the download.

UpkeepUpdate frequency

RetrofitReady ships an update every 3 months, Basic Theory Test Lite every 6 weeks. The most recent releases landed on September 25, 2026 and July 16, 2026 respectively.

Scorecard3 real differences · 7 level
RetrofitReady versus Basic Theory Test Lite: the parameters behind the verdict, then further details
ParameterRetrofitReadyBasic Theory Test Lite
PriceFreeFree
Rating—4.0 (1 ratings) — better
Positive reviews90.0% of reviews — better52.9% of reviews
Number of ratings—1 — better
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size37 MB14 MB
Age rating4+4+
DeveloperEknath KadamWebrich Software Limited

Customer experience

RetrofitReady

Written reviews20 reviews
Positive90.0%
Neutral5.0%
Negative5.0%

Basic Theory Test Lite

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews17 reviews
Positive52.9%
Neutral5.9%
Negative41.2%

In-app purchases

None

RetrofitReady

No in-app purchases

1 purchases

Basic Theory Test Lite

One-time1
  • Full Question Bank$2.99

Questions

Is RetrofitReady free?
RetrofitReady is free to download, with no in-app purchases.
Is Basic Theory Test Lite free?
Basic Theory Test Lite is free to download, with in-app purchases available.
Do RetrofitReady or Basic Theory Test Lite have ads?
Neither RetrofitReady nor Basic Theory Test Lite shows ads.
Which is updated more often, RetrofitReady or Basic Theory Test Lite?
RetrofitReady ships an update every 3 months, and Basic Theory Test Lite every 6 weeks. Most recently, RetrofitReady was updated on September 25, 2026 and Basic Theory Test Lite on July 16, 2026.

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