Comparison

AOSB vs Army Officer Selection Prep

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

Head to head
About

AOSB

Features
Read full description

Prepare for the Army Officer Selection Board with focused practice tests designed to build speed, accuracy, and confidence. This app helps you practise key assessment areas including Numeracy, Verbal Reasoning, Abstract Reasoning, and Data Interpretation. Each test is timed, giving you realistic pressure while helping you identify areas to improve. Features include: • Timed Numeracy tests covering arithmetic, percentages, ratios, speed-distance-time, and data interpretation • Verbal Reasoning practice with true, false, and can't tell questions • Abstract Reasoning tests with generated shape-pattern questions • Results summary showing correct answers, wrong answers, and score • Review panel for mistakes, including screenshots and explanations where available • Clean, simple interface designed for quick practice sessions

About

Army Officer Selection Prep

Features
Read full description

Army Officer Selection Prep is an unofficial study app for Army Officer Selection Board (AOSB) preparation — verbal, numerical and abstract reasoning, planning exercise practice, leadership and command-task theory, service knowledge, current affairs awareness, written briefing structure and fitness standards theory. IMPORTANT: Full access requires an In-App Purchase (auto-renewable subscription or lifetime). The download is free; practice content unlocks after purchase. Restore Purchases is always available on the paywall and in Settings. WHAT YOU GET • 2,100+ unique multiple-choice questions with explanations — verbal, numerical and abstract reasoning, planning exercise maths, service knowledge, military history, current affairs and board skills • Verbal reasoning passages in the True / False / Cannot Say format • Timed reasoning-style mocks (40 questions Ā· 30 minutes) • 14 planning exercise scenarios with worked solutions • 18 study guides: the selection pathway, Briefing, Main Board, reasoning toolkits, PlanEx method, command tasks, lecturette and essay, interview prep, Army values, ranks and structure, history, current affairs, map reading and fitness • Glossary of military terms and a recommended reading list • Quick practice, practice-by-component and weak-area drills • Review incorrect answers and bookmarks • Flashcards with spaced repetition • Progress dashboard: readiness %, mastery, streak, board countdown • Works fully offline — no account required WHO IT'S FOR Candidates preparing for AOSB Briefing and Main Board themes. Practise psychometric-style reasoning, PlanEx structure, leadership theory, service knowledge and calm boardcraft — with clear feedback after every answer. COMPLIANCE & DISCLAIMER Independent, unofficial study aid by MD Shahariar Nazim Joy. Not affiliated with, endorsed by, or connected to the British Army, the Ministry of Defence, AOSB Westbury, or Royal Military Academy Sandhurst. All questions are original study material written for this app. Practising here does not guarantee selection or a place at Sandhurst. Always follow official joining guidance on army.mod.uk. SUBSCRIPTIONS (USD) • Monthly Premium — $6.99 / month • Yearly Premium — $19.99 / year (best value) • Lifetime Access — $29.99 one-time Payment is charged to your Apple Account. Subscriptions auto-renew unless cancelled at least 24 hours before the period ends. Manage in App Store account settings. Privacy Policy: https://joykhansayan1.github.io/army-officer-selection-prep/privacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: https://joykhansayan1.github.io/army-officer-selection-prep/support.html

Screenshots

AOSB4 screens
Army Officer Selection Prep4 screens

Verdict

The call

The clearest difference is in-app purchases: AOSB at none against Army Officer Selection Prep's 3. AOSB also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (15.6 vs 17.0). On price, ads and device support there is nothing between them.

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. Army Officer Selection Prep sells 3 in-app purchases, starting at $6.99 per month. AOSB asks for nothing beyond the download.

UpkeepUpdate frequency

AOSB ships an update every 2 weeks, Army Officer Selection Prep every 2 months. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard3 real differences Ā· 3 level
AOSB versus Army Officer Selection Prep: the parameters behind the verdict, then further details
ParameterAOSBArmy Officer Selection Prep
PriceFreeFree
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size12 MB6 MB
Age rating4+4+
DeveloperGeorge LeeMD Shahariar Nazim Joy

In-app purchases

None

AOSB

No in-app purchases

3 purchases

Army Officer Selection Prep

Subscriptions2
  • Monthly Premium$6.991 Month
  • Yearly Premium$19.991 Year
One-time1
  • Lifetime Access$29.99

Questions

Is AOSB free?
AOSB is free to download, with no in-app purchases.
Is Army Officer Selection Prep free?
Army Officer Selection Prep is free to download, with in-app purchases available.
Do AOSB or Army Officer Selection Prep have ads?
Neither AOSB nor Army Officer Selection Prep shows ads.
Which is updated more often, AOSB or Army Officer Selection Prep?
AOSB ships an update every 2 weeks, and Army Officer Selection Prep every 2 months. Most recently, AOSB was updated on November 5, 2026 and Army Officer Selection Prep on October 31, 2026.

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