Comparison

Grammar Express vs Inference Ace

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

Head to head
About

Grammar Express

Master the different types of nouns with interactive lessons and quizzes. Improve your understanding of noun classification, gender, number, and case through practice questions and detailed feedback. Track your progress with visual charts and customize your learning experience with adjustable timers.

Highlights
  • 48+ pages of grammar lessons and rules
  • 327+ examples with explanations
  • 450 multiple-choice questions
  • Topic-based study and mock tests
  • Detailed test results and progress tracking
  • Customizable timer settings
  • Voice-over feature
Features
Read full description

Grammar Express: Nouns is the complete course in mastering the kinds of noun such as common noun, proper noun, collective noun, material noun and abstract noun. It contains over 48 pages of lessons explaining Noun-Number, Gender and Case with several examples. 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 kinds of noun and their classification into concrete and abstract noun. 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. 1. Noun-Case 2. Noun-Gender 3. Noun-Number ~~~~~~~~~~~~~~~ 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 pie 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: ~~~~~~~~~~~~~~~ • Voice over • Over 48 pages of grammar lessons and rules with over 327 examples. • 450 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. • 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

Inference Ace

This app helps children in grades 2-5 improve their reading comprehension by teaching inference skills step-by-step. It uses a game-like environment with over 450 examples and a reward center to keep kids engaged. Detailed reporting is available for up to 10 students.

Highlights
  • Step-by-step inference skill building
  • Game-like environment with reward center
  • Over 450 examples designed by teachers
  • Detailed reporting for multiple students
  • Incremental learning with unlocked levels
  • Guided learning for reduced frustration
Features
Read full description

** Winner of prestigious Mom's Choice Award! Featured on Appolicious.com, iHeartThisApp.com ** Inference Ace helps kids who have trouble with reading comprehension. The app builds inference skills step-by-step until mastery in a fun, game-like environment. ***** 5 Stars - Nice app for practicing inference. Tons of examples. ***** 5 Stars - My son struggles with comprehension and doesn't like reading long passages. This app teaches a high level of skill in a format he enjoys. Thanks! Inference Ace is targeted to children in Grades 2-5 who can read the words (decode), but don't understand what they read. With over 450 examples, a fun and engaging reward center to increase motivation, and content designed by professional teachers and researchers, this app is bound to capture the attention of your kids. Best of all, there is detailed reporting for up to 10 students to meet the needs of teachers, therapists and parents. Key Features: - Incremental learning. New levels are unlocked only when your child is ready. - Guided learning for less frustration. Your child will always be guided to the correct answer. - Fun and engaging Reward Center to increase motivation. - Contains over 450 examples, with content designed by professional teachers and researchers. - Inferences are taught from multiple perspectives: what inferences are possible, which are not possible, multiple inferences per sentence, etc. - Our own Smart Sentence technology is used to infinitely vary the examples to prevent learning by rote. - Advanced levels include timers to ensure fluency. Research shows fluency in the foundation skills is critical to reading comprehension. Our apps are designed for and tested by typical and special needs children. Testers include children with Autism and other special needs. Our apps work for them! The free version of this app has 4 free levels for a single player. Remaining levels are unlocked by a single in-app purchase. Additional players can be purchased separately through an in-app purchase. Check out 'Inference Ace School Edition' if you prefer no in-app purchases. We are a member of the Moms with Apps program. We collect NO private information in our app, and our apps do not allow unrestricted web access. Inferencing is a key component of reading comprehension. If you can't infer fluently, you can't understand the story. Help your child now by getting started with our Inference Ace app. While you're at it, check out our other apps that target WH questions, identifying inference clues and identifying the main idea of a sentence or paragraph. We take customer service very seriously! If you ever have a problem or find that we've missed something, contact us at our website and we will do our best to fix the problem. ** Note: Inference Ace and Inference Clues intentionally use similar data sets. However, different skills are targeted. Also, when working through this app, you will encounter different variants of the same examples many times as we teach our players to derive multiple inferences from a single sentence -- just like expert readers do. This is an intentional feature, not a bug :-)

Screenshots

Grammar Express4 screens
Inference Ace4 screens

Verdict

The call

The clearest difference is review sentiment: Inference Ace at 89% against Grammar Express's 0%. Inference Ace also leads on rating (3.5 vs 2.0) and ratings volume (22 vs 1). Grammar Express's advantage is monetization model (free vs free with in-app purchases). On price, update cadence, ads and in-app purchases 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 Express sells 1 one-off in-app purchase and Inference Ace sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Inference Ace holds the better App Store score, 3.5 against 2.0. That said, the two scores are not equally well evidenced: Inference Ace has 22 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Grammar Express's written reviews are positive against 89% of Inference Ace's.

UpkeepUpdate frequency

Grammar Express ships an update every 13 months, Inference Ace every 7 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

Scorecard5 real differences · 5 level
Grammar Express versus Inference Ace: the parameters behind the verdict, then further details
ParameterGrammar ExpressInference Ace
PriceFreeFree
Rating2.0 (1 ratings)3.5 (22 ratings) — better
Positive reviews0.0% of reviews88.6% of reviews — better
Number of ratings122 — better
Update frequencyEvery 13 monthsEvery 7 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.2 — better
Further details — not scored
Size10 MB22 MB
Age rating+44+
DeveloperWebrich Software LimitedJanine Toole

Customer experience

Grammar Express

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Inference Ace

All ratings21 ratings
Positive66.7%
Neutral4.8%
Negative28.6%
Written reviews35 reviews
Positive88.6%
Neutral5.7%
Negative5.7%

In-app purchases

1 purchases

Grammar Express

One-time1
  • Full Question Bank$1.99
3 purchases

Inference Ace

One-time3
  • Upgrade to 2 Players$1.99
  • Inference Ace: Buy All Levels$2.99
  • Upgrade to 10 Players$2.99

Questions

Is Grammar Express free?
Grammar Express is free to download, with in-app purchases available.
Is Inference Ace free?
Inference Ace is free to download, with in-app purchases available.
Which has better reviews, Grammar Express or Inference Ace?
Inference Ace is rated higher. Grammar Express averages 2.0 out of 5 from 1 ratings, while Inference Ace averages 3.5 from 22 ratings.
Do Grammar Express or Inference Ace have ads?
Neither Grammar Express nor Inference Ace shows ads.
Which is updated more often, Grammar Express or Inference Ace?
Grammar Express ships an update every 13 months, and Inference Ace every 7 months. Most recently, Grammar Express was updated on November 1, 2026 and Inference Ace on November 6, 2026.

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