Comparison

Grammar vs BIBOL APP

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

Head to head
About

Grammar

Master sentence transformations between active and passive voice with comprehensive lessons, examples, and quizzes. Improve your English writing by introducing variety and understanding grammar rules. Track your progress with detailed results and visual charts.

Highlights
  • Comprehensive grammar lessons and rules
  • Over 100 examples with explanations
  • Multiple-choice quizzes with feedback
  • Progress tracking with pie charts
  • Customizable timer settings
  • Randomized question algorithm
Features
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Grammar Express: Active and Passive Voice is the complete course in mastering transformation of sentences, a process which enables you to change a sentence from one grammatical form to another without changing its meaning. It's a valuable exercise for it teaches you how to introduce variety in writing English. It contains over 46 pages of lessons with several examples explaining how to change Active Voice into Passive Voice and the vice versa. You can learn the grammar rules, study the examples and test their understanding by taking quiz. At the end of quiz the user is presented with test summery and explanation for each test question. Grammar Express can help you to improve your understanding of Active and Passive Voice and make use of variety of expressions in writing English. Custom timer setting can assist you to improve response times under exam time constraints. Research suggest that kids and adults learn most quickly when playing learning games with real-time error-feedback. Grammar Express provides learners with an opportunity to improve strategies for grammar success. ~~~~~~~~~~~~~~~ PREPARE BY TOPICS: ~~~~~~~~~~~~~~~ You can study the grammar rules by topic. All questions are sorted by topic. It also tells you the areas that each topic covers. * Present Tense * Present Continuous Tense * Present Perfect Tense * Past Tense * Past Continuous Tense * Past Perfect Tense * Future Tense * Interrogative * Imperative * Miscellaneous Questions on Passive Voice ~~~~~~~~~~~~~~~ MOCK TEST MODE: ~~~~~~~~~~~~~~~ In mock test questions are presented randomly from all the topics. ~~~~~~~~~~~~~~~ DETAILED TEST RESULTS: ~~~~~~~~~~~~~~~ A summary of the practice test is presented at the end of each test. It shows you the time you took, the score, which questions you answered correctly and where you were wrong. ~~~~~~~~~~~~~~~ PROGRESS METER: ~~~~~~~~~~~~~~~ The app records your progress as you start giving practice tests. It shows you a beautiful bar chart so that you can track your weak areas and give more focus on them. ~~~~~~~~~~~~~~~ VERY EASY TO USE: ~~~~~~~~~~~~~~~ The slick user interface allows you to choose from possible answers. You don’t need to press too many buttons or encounter any alert messages. The app is very interactive and needs minimum user input Innovative use of iPhone’s small screen real estate. ~~~~~~~~~~~~~~~ FEATURE LIST: ~~~~~~~~~~~~~~~ • Over 26 pages of grammar lessons and rules with over 102 examples. • Over 300 multiple - choice questions with explanation. • Choose number of questions you would like in each test. • A new module, “Pie chart” keeps track of how you are performing in a particular topic or mock test. • Choose your own timer settings. • Cool sound effects. (You can turn them off if desired.) • Special algorithm that randomizes questions every time you take a test. "* Privacy Policy: http://www.webrichsoftware.com/privacy.html * EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/"

About

BIBOL APP

Features
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Used to disseminate information on the activities of banking institutions

Screenshots

Grammar4 screens
BIBOL APP3 screens

Verdict

The call

The clearest difference is in-app purchases: BIBOL APP at none against Grammar's 1. BIBOL APP also leads on update cadence (every 4 weeks vs every 13 months) and iOS requirement (12.0 vs 15.0). On price, ads 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. Grammar sells 1 one-off in-app purchase. BIBOL APP asks for nothing beyond the download.

UpkeepUpdate frequency

Grammar ships an update every 13 months, BIBOL APP every 4 weeks. The most recent releases landed on November 9, 2026 and November 7, 2026 respectively.

Scorecard3 real differences · 7 level
Grammar versus BIBOL APP: the parameters behind the verdict, then further details
ParameterGrammarBIBOL APP
PriceFreeFree
Rating4.0 (4 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 13 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size15 MB42 MB
Age rating4+17+
DeveloperWebrich Software LimitedChanthavilay BOUNTHALA

In-app purchases

1 purchases

Grammar

One-time1
  • Full Question Bank$2.99
None

BIBOL APP

No in-app purchases

Questions

Is Grammar free?
Grammar is free to download, with in-app purchases available.
Is BIBOL APP free?
BIBOL APP is free to download, with no in-app purchases.
Do Grammar or BIBOL APP have ads?
Neither Grammar nor BIBOL APP shows ads.
Which is updated more often, Grammar or BIBOL APP?
Grammar ships an update every 13 months, and BIBOL APP every 4 weeks. Most recently, Grammar was updated on November 9, 2026 and BIBOL APP on November 7, 2026.

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