Comparison

Preposition Builder Master Pro vs AWS DEA

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

Head to head
About

Preposition Builder Master Pro

Learn English prepositions and grammar by correctly placing words to form sentences and common sayings. This game offers multiple difficulty levels, from beginner to expert, and includes a fun way to master idioms and expressions. Compete with others or practice solo to improve your language skills.

Highlights
  • Sentence building with prepositions
  • Multiple difficulty levels (Beginner to Expert)
  • Proverbs and Sayings level
  • Time penalties for errors
  • Scoring based on speed and accuracy
  • Online multiplayer mode
  • Game Center integration
Features
Read full description

Learn prepositions in English and grammar by putting the prepositions in place to form correct sentences and sayings. Preposition Master is a fun and educational game for kids and English language students of all ages who want to learn and improve their language skills in a more entertaining way. How do you play? It’s easy. The game consists of putting the prepositions from each level in the correct place to form a correct sentence. (Beginner, competent, professional, expert, sayings.) If you make a mistake and click the incorrect preposition, there is a time penalty. Once you have completed the sentence you will receive a score based on how fast you were and your total number of errors. You can share your knowledge with other players worldwide thanks to online multiplayer mode or with your friends on Game Center. Are you an English expert who wants to show off your skills? Are you an English student who wants to improve your skills? Preposition Master will help you use prepositions in sentences correctly. Preposition Master is the first game of its kind designed and developed completely by educators to help students improve one of the biggest problems language learners all face, correct use of prepositions. With four levels from beginner to expert, Preposition Master is a challenge for everyone from the Beginner to the most seasoned English language communicators. The Proverbs and Sayings level is a great way to learn and remember popular English idioms and expressions. These are the levels: Beginner: Ideal for children. This level contains the easiest sentences with the fewest prepositions to work with. Competent: This is where things start to get harder. This level is great for learners who are a bit farther along in their English language learning adventure. Professional: Great for users with a solid base in English who want to keep their skills up to date. Expert: Only for those with the most proficient English skills. Are you one of them? Do you have what it takes to become the next Preposition Master? Try your luck in single player mode or against friends and other players worldwide. Learn English with a smile on your face.

About

AWS DEA

Features
Read full description

Glue, Redshift, Kinesis, Athena — the Data Engineer Associate exam walks the whole path your data takes through AWS. Certisimo walks it with you, question by question. WHAT'S INSIDE • 260 exam-style questions across 4 practice sets, written for the AWS Data Engineer Associate exam • The ground you will train on: AWS Glue, Redshift, Kinesis, Athena, S3 and Lake Formation TWO WAYS TO PRACTICE In training mode, answers come back with immediate feedback. In test mode you face the clock — timed, scored, no hints — and finish with a full review of what you skipped or got wrong. MEASURE YOUR PROGRESS Insights turns your history into a readiness score, so how close you are to a passing level is always visible. MADE FOR HOW YOU STUDY • Save questions, add your own notes, find anything with search • Full session history, so you can watch your scores climb • Works completely offline — study on the plane, the metro, anywhere • iPhone and iPad, light and dark, no account and no sign-up ALREADY BOUGHT THIS APP? Premium is yours — free, forever. It unlocks by itself the first time you open this update: nothing to buy, nothing to restore, no account to create. Your saved questions, your notes and your full history are all still here. GO FURTHER WITH PREMIUM Certisimo Premium unlocks the full explanation behind every answer — why the right choice wins, not just which letter it was — plus unlimited exam simulations, the complete Insights breakdown (weak, hard, new and strong questions) and an ad-free experience. • Weekly $5.99 · Yearly $34.99 with a 14-day free trial · Lifetime $79.99 one-time purchase Get Certisimo today — and make the Data Engineer exam the least surprising part of your certification. Certisimo is an independent study aid and is not affiliated with, endorsed by, or sponsored by Amazon Web Services, Inc. Weekly and Yearly Premium are auto-renewable subscriptions; Lifetime is a one-time purchase. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. Payment is charged to your Apple ID account, and you can manage or cancel your subscription in your App Store account settings at any time. Terms of Use: https://certisimo-app.web.app/terms Privacy Policy: https://certisimo-app.web.app/privacy

Screenshots

Preposition Builder Master Pro4 screens
AWS DEA4 screens

Verdict

The call

The clearest difference is in-app purchases: Preposition Builder Master Pro at none against AWS DEA's 3. Preposition Builder Master Pro also leads on ads (none vs shown) and update cadence (every 2 months vs every 5 months). On price 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. AWS DEA sells 3 in-app purchases, starting at $5.99 per 7 days. Preposition Builder Master Pro asks for nothing beyond the download.

UpkeepUpdate frequency

Preposition Builder Master Pro ships an update every 2 months, AWS DEA every 5 months. The most recent releases landed on November 2, 2026 and November 9, 2026 respectively.

Scorecard4 real differences · 6 level
Preposition Builder Master Pro versus AWS DEA: the parameters behind the verdict, then further details
ParameterPreposition Builder Master ProAWS DEA
PriceFreeFree
Rating3.9 (19 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings19 — better—
Update frequencyEvery 2 months — betterEvery 5 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better26.0
Further details — not scored
Size45 MB54 MB
Age rating4+4+
DeveloperImanol Fernandez GorostizagaSPIDER SERVICE SRL

In-app purchases

None

Preposition Builder Master Pro

No in-app purchases

3 purchases

AWS DEA

Subscriptions2
  • Premium Weekly$5.997 Days
  • Premium Yearly14 Days trial$34.991 Year
One-time1
  • Premium Lifetime$79.99

Questions

Is Preposition Builder Master Pro free?
Preposition Builder Master Pro is free to download, with no in-app purchases.
Is AWS DEA free?
AWS DEA is free to download, with in-app purchases available.
Do Preposition Builder Master Pro or AWS DEA have ads?
AWS DEA shows ads; Preposition Builder Master Pro does not.
Which is updated more often, Preposition Builder Master Pro or AWS DEA?
Preposition Builder Master Pro ships an update every 2 months, and AWS DEA every 5 months. Most recently, Preposition Builder Master Pro was updated on November 2, 2026 and AWS DEA on November 9, 2026.

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