Comparison

RAF Aptitude Prep vs Water Hygiene

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

Head to head
About

RAF Aptitude Prep

Features
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RAF Aptitude Test Prep helps you train for Defence Aptitude Assessment (DAA) style airman selection drills. Purchase required (subscription or lifetime) via Apple In-App Purchase — there is no free tier. Practice verbal reasoning, numerical reasoning, work rate, spatial reasoning (2D/3D), electrical comprehension, mechanical comprehension, and memory with 2,000+ original timed questions. FEATURES • Timed drills for each DAA-style section • Full mixed mock exams (~148 questions / ~90 min practice target) • Quick practice and practice-by-section • Detailed rationales where helpful • Spaced-repetition review for missed items • Bookmarks and incorrect-answer review • Progress dashboard: readiness %, mastery, streak • Onboarding plan: test date, goal, daily target, reminders • Exam Info and offline-first study SUBSCRIPTION & LIFETIME • Monthly ($4.99) Ā· Yearly ($14.99) Ā· Lifetime ($19.99) • Payment charged to your Apple ID; subscriptions auto-renew unless cancelled at least 24 hours before the period ends • Manage or cancel in App Store account settings • Restore Purchases available on the paywall and in Settings Privacy Policy: https://joykhansayan1.github.io/raf-aptitude-test-prep-legal/privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: https://joykhansayan1.github.io/raf-aptitude-test-prep-legal/support.html Disclaimer: RAF Aptitude Test Prep is an independent study aid and is not affiliated with, endorsed by, or sponsored by the Royal Air Force or the Ministry of Defence. All practice questions are original.

About

Water Hygiene

Features
Read full description

Get ready for your EUSR National Water Hygiene "Blue Card" assessment — and walk in knowing you'll pass. Water Hygiene is the focused practice app for anyone working on the UK's clean, drinking-water network. If your job involves "Restricted Operations" — laying or repairing mains, working on service pipes, or entering a treated-water site — a water company will ask for your National Water Hygiene registration. This app gets you there. Over 1,000 original questions, written to the real National Water Hygiene syllabus and marked instantly with a plain-English explanation for every answer, so you learn as you practise. WHAT'S INSIDE • Full mock exams — 25 questions in 30 minutes, exam conditions, just like the real assessment • Quickfire rounds — a fast 10-question warm-up, no timer • Practice by topic — drill the areas you're weakest on • Flashcards — quick revision on the go • Question of the day — keep it ticking over • Readiness score and progress tracking, so you know when you're ready EVERY TOPIC ON THE TEST • Why water hygiene matters — public health and waterborne disease • Personal health & hygiene — Weil's disease, reporting illness, hand hygiene • Contamination: types and sources • Backflow & cross-connection • Hygienic site practices • Approved materials (WRAS) and jointing products • Disinfection & chlorination of mains • Standpipes & hydrants • Working on live & repaired mains • Excavations & working near sewers • Legislation & responsibilities • The National Water Hygiene scheme & Blue Card ABOUT THE ASSESSMENT The EUSR National Water Hygiene assessment is 25 multiple-choice questions in about 30 minutes, with an instant result. Your registration lasts three years, then you re-sit. This app is built to match that format and standard. FREE TO START Try Quickfire and a sample of the bank free, no account needed. Unlock the full 1,000+ question bank, all the mock exams, flashcards and topic practice with Pro. GET CARDED When you're scoring at a pass, you can have the official EUSR-accredited course, assessment and Blue Card sorted for you through our training partner — done from home in a few hours. Pro is available as a weekly or monthly auto-renewing subscription, or a one-off lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period; manage or cancel anytime in your App Store account settings. Independent study material. Not affiliated with or endorsed by EUSR or Energy & Utility Skills. Always check the official EUSR website for current scheme and assessment requirements. Terms of use: https://prepsuite.co.uk/terms

Screenshots

RAF Aptitude Prep4 screens
Water Hygiene4 screens

Verdict

The call

RAF Aptitude Prep and Water Hygiene are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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. RAF Aptitude Prep sells 3 in-app purchases, starting at $4.99 per month and Water Hygiene sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
RAF Aptitude Prep versus Water Hygiene: the parameters behind the verdict, then further details
ParameterRAF Aptitude PrepWater Hygiene
PriceFreeFree
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.4 — better
Further details — not scored
Size4 MB44 MB
Age rating4+4+
DeveloperMD Shahariar Nazim JoyHamilton Technologies Ltd

In-app purchases

3 purchases

RAF Aptitude Prep

Subscriptions2
  • Monthly$4.991 Month
  • Yearly$14.991 Year
One-time1
  • Lifetime Access$19.99
3 purchases

Water Hygiene

Subscriptions2
  • Weekly Access$4.997 Days
  • Monthly Access$9.991 Month
One-time1
  • Lifetime Access$19.99

Questions

Is RAF Aptitude Prep free?
RAF Aptitude Prep is free to download, with in-app purchases available.
Is Water Hygiene free?
Water Hygiene is free to download, with in-app purchases available.
Do RAF Aptitude Prep or Water Hygiene have ads?
Neither RAF Aptitude Prep nor Water Hygiene shows ads.

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