Comparison

BIDMASter vs Vocab9Plus

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

Head to head
About

BIDMASter

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Reveal the hidden numbers and symbols to equal the target number. Swipe numbers and symbols into the correct order then tap β€˜=’ to check your answer. Your choices are coloured to give you clues for your next attempt. GOLD in the right place GREEN needs moving GREY not needed Now plan your next guess: Flick away the grey ones and drag the green ones to a new position. You can even slide a new character on top of an old one. Take care to follow the rules for the order of operations: ( 3 + 2 ) x 5 = 25 Brackets, or parentheses, first 3 + 2 x 5 - 1 = 12 Divide and multiply next 1 - 3 x 4 = -11 Add and subtract last 9 Γ· 3 x 2 = 6 Work from left to right You can take up to six attempts and then the answer is revealed. BIDMASter is a great way to work on your arithmetic skills. And it’s a stimulating and fun way to start a maths lesson.

About

Vocab9Plus

Features
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Give your child the vocabulary edge for 9+ exams. Vocab9Plus is the smart, simple way to learn and master the 500 essential words that appear most frequently in 9+ entrance exams, grammar school tests, and independent school assessments across the UK. Designed for children aged 9–11 (Years 4–6), every word comes with a clear definition, an example sentence, pronunciation guide, synonyms, antonyms, and a helpful memory tip β€” everything needed to truly understand and remember each word. HOW IT WORKS Words are organised into 5 sets of 100, sorted from easiest to hardest. Each set is split into 5 groups of 20 words β€” small enough to learn in one sitting, big enough to make real progress. β€’ Set 1 (Easiest): Everyday words like "eager," "honest," and "zone" β€’ Set 2 (Easy): Building words like "fragrant," "lenient," and "modest" β€’ Set 3 (Medium): Growing words like "majestic," "colleague," and "cunning" β€’ Set 4 (Hard): Advanced words like "nonchalant," "obstinate," and "sovereign" β€’ Set 5 (Hardest): Challenge words like "compassionate," "extraordinary," and "disorientate" LEARN MODE Each word card shows: β€’ Clear, child-friendly definition β€’ Example sentence with the word highlighted β€’ Pronunciation guide with text-to-speech β€’ Similar words with strength levels (common, strong, very strong) β€’ Opposite words β€’ A "Remember" tip to help the word stick QUIZ MODE Test knowledge with three quiz types: β€’ Synonyms β€” find words with similar meanings β€’ Antonyms β€” find words with opposite meanings β€’ Meanings β€” match the correct definition Each quiz tracks your score, time per question, and overall accuracy. Review your results after every session to see exactly which words need more practice. PROGRESS DASHBOARD See everything at a glance: β€’ Total quizzes taken and words learned β€’ Overall accuracy percentage β€’ Performance breakdown by quiz type (synonyms, antonyms, meanings) β€’ Weekly activity chart showing daily progress β€’ Calendar heatmap to track learning streaks β€’ XP points and levelling system to stay motivated BUILT FOR 9+ SUCCESS Vocab9Plus was created specifically for the UK 9+ exam curriculum. The word list covers vocabulary commonly tested in GL Assessment, CEM, and ISEB exams. Whether preparing for grammar school entrance or independent school scholarships, these are the words your child needs to know. FEATURES AT A GLANCE β€’ 500 carefully selected 9+ vocabulary words β€’ 5 difficulty levels, 25 word groups β€’ Learn mode with definitions, examples, and memory aids β€’ Text-to-speech pronunciation for every word β€’ 3 quiz types: synonyms, antonyms, and meanings β€’ Real-time progress tracking and statistics β€’ Weekly streaks and XP motivation system β€’ Calendar heatmap for daily activity β€’ Clean, child-friendly design β€’ Works offline after initial download Start with Set 1, Group A β€” just 20 words. By the time you reach Set 5, your child will have a vocabulary that stands out in any exam. Download Vocab9Plus today and make every word count.

Screenshots

BIDMASter4 screens
Vocab9Plus4 screens

Verdict

The call

The clearest difference is update cadence: BIDMASter at every 2 days against Vocab9Plus's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

BIDMASter ships an update every 2 days, Vocab9Plus fortnightly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard1 real difference Β· 5 level
BIDMASter versus Vocab9Plus: the parameters behind the verdict, then further details
ParameterBIDMASterVocab9Plus
PriceFreeFree
Update frequencyEvery 2 days β€” betterFortnightly
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.515.0 β€” better
Further details β€” not scored
Size2 MB36 MB
Age rating4+9+
DeveloperPhilip HazelwoodTutors11Plus

In-app purchases

None

BIDMASter

No in-app purchases

None

Vocab9Plus

No in-app purchases

Questions

Is BIDMASter free?
BIDMASter is free to download, with no in-app purchases.
Is Vocab9Plus free?
Vocab9Plus is free to download, with no in-app purchases.
Do BIDMASter or Vocab9Plus have ads?
Neither BIDMASter nor Vocab9Plus shows ads.
Which is updated more often, BIDMASter or Vocab9Plus?
BIDMASter ships an update every 2 days, and Vocab9Plus fortnightly. Most recently, BIDMASter was updated on November 3, 2026 and Vocab9Plus on October 31, 2026.

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