Comparison

Preposition Builder Master Pro vs Ditdah CW

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

Ditdah CW

Master Morse code through auditory training using the Koch method. Practice sending and decoding messages, simulate HAM exams, and access a comprehensive reference guide. Designed for serious operators, it offers adjustable speeds and offline functionality.

Highlights
  • Koch Method lessons
  • Farnsworth Mode for ear recognition
  • Listen & Decode practice
  • Send Practice with screen tapping
  • HAM Exam Simulation
  • Offline functionality
  • Adjustable speed (5-30 WPM)
Features
Read full description

Learn Morse code the way real operators do — by ear, not by chart. Ditdah CW uses the proven Koch method to train your ear from day one. No subscriptions. No ads. No paywalls. One purchase, everything included. - LEARN - Koch Method lessons — 13 structured lessons, 2 characters at a time - Farnsworth Mode — wider spacing to build ear recognition faster - Proven progression — advance only when you hit 90% accuracy PRACTICE - Listen & Decode — letters, words, and sentences at your chosen WPM - Send Practice — tap the screen like a real CW key, short for dit, long for dah - Custom Text — practice your callsign, CQ calls, or any text you choose - Adjustable speed — 5 to 30 WPM, dial it to your level TEST - HAM Exam Simulation — 40 questions, mixed characters, 13 WPM - Letter, Number, and Q-Code tests - Instant results with missed character breakdown REFERENCE - Full alphabet, numbers, and essential Q-codes — all in one place - Tap any character to hear it - Works completely offline - BUILT FOR SERIOUS OPERATORS Ditdah is designed for HAM radio candidates and experienced operators who want a no-nonsense, professional training tool. Not a game. Not a flashcard app. A real CW trainer. CW tone frequency is adjustable (400–900 Hz). Streak tracking keeps your daily practice consistent. Statistics show your WPM growth and weakest characters over time. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Preposition Builder Master Pro4 screens
Ditdah CW4 screens

Verdict

The call

The clearest difference is in-app purchases: Preposition Builder Master Pro at none against Ditdah CW's 3. Preposition Builder Master Pro also leads on ratings volume (19 vs 2) and iOS requirement (15.6 vs 18.6). On price, rating, update cadence and ads 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. Ditdah CW sells 3 in-app purchases, starting at $1.99 per 7 days. Preposition Builder Master Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.9 for Preposition Builder Master Pro against 4.0 for Ditdah CW. That said, the two scores are not equally well evidenced: Preposition Builder Master Pro has 19 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 2, 2026 and November 11, 2026 respectively.

Scorecard3 real differences · 7 level
Preposition Builder Master Pro versus Ditdah CW: the parameters behind the verdict, then further details
ParameterPreposition Builder Master ProDitdah CW
PriceFreeFree
Rating3.9 (19 ratings)4.0 (2 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings19 — better2
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.6
Further details — not scored
Size45 MB1 MB
Age rating4+4+
DeveloperImanol Fernandez GorostizagaMustafa Sucu

Customer experience

Preposition Builder Master Pro

All ratings17 ratings
Positive64.7%
Neutral5.9%
Negative29.4%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Ditdah CW

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%

In-app purchases

None

Preposition Builder Master Pro

No in-app purchases

3 purchases

Ditdah CW

Subscriptions3
  • Weekly$1.997 Days
  • Monthly$3.991 Month
  • Yearly$19.991 Year

Questions

Is Preposition Builder Master Pro free?
Preposition Builder Master Pro is free to download, with no in-app purchases.
Is Ditdah CW free?
Ditdah CW is free to download, with in-app purchases available.
Which has better reviews, Preposition Builder Master Pro or Ditdah CW?
Ditdah CW is rated higher. Preposition Builder Master Pro averages 3.9 out of 5 from 19 ratings, while Ditdah CW averages 4.0 from 2 ratings.
Do Preposition Builder Master Pro or Ditdah CW have ads?
Neither Preposition Builder Master Pro nor Ditdah CW shows ads.
Which is updated more often, Preposition Builder Master Pro or Ditdah CW?
Preposition Builder Master Pro ships an update every 2 months, and Ditdah CW every 2 months. Most recently, Preposition Builder Master Pro was updated on November 2, 2026 and Ditdah CW on November 11, 2026.

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