Comparison

Kidioms 3 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

Kidioms 3

Features
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Kidioms 3 - Even More Idioms for Kids Kidioms 3 introduces 64 more commonly used idioms.This iPad app makes learning idioms fun for children, ELL students, or anyone wishing to improve their understanding of English. The app uses an interactive notebook to present an idiom, it's meaning and an example showing the idiom used in context. Each page of the notebook also has a graphic to help illustrate the idiom’s meaning. In addition to the lessons, Kidioms offers three interactive activities to help reinforce the concepts and provide practice using and understanding the idioms. Word Drop challenges the learner to complete the idiom by choosing the correct missing word. Missing Word asks the user to spell the missing word. In Match-Up the player selects the correct idiom to fill in the blank in a larger block of text. Vocabulary Acquisition and Use Grade 3 •L.3.5. Demonstrate understanding of figurative language, word relationships and nuances in word meanings. ◦Distinguish the literal and non-literal meanings of words and phrases in context (e.g.,take steps). ◦Identify real-life connections between words and their use (e.g., describe people who are friendly or helpful). ◦Distinguish shades of meaning among related words that describe states of mind or degrees of certainty (e.g., knew, believed, suspected, heard, wondered). Grade 4 •L.4.5. Demonstrate understanding of figurative language, word relationships, and nuances in word meanings. ◦Explain the meaning of simple similes and metaphors (e.g., as pretty as a picture) in context. ◦Recognize and explain the meaning of common idioms, adages, and proverbs. Demonstrate understanding of words by relating them to their opposites (antonyms) and to words with similar but not identical meanings (synonyms). Grade 5 L.5.5. Demonstrate understanding of figurative language, word relationships, and nuances in word meanings. •Interpret figurative language, including similes and metaphors, in context. •Recognize and explain the meaning of common idioms, adages, and proverbs. Use the relationship between particular words (e.g., synonyms, antonyms, homographs) to better understand each of the words.

About

Inference Ace

This app helps children in grades 2-5 improve their reading comprehension by teaching inference skills step-by-step. It features over 450 examples, a reward center, and guided learning to make practice engaging and effective.

Highlights
  • Step-by-step inference skill building
  • Over 450 engaging examples
  • Fun reward center for motivation
  • Guided learning for less frustration
  • Detailed reporting for up to 10 students
  • Smart Sentence technology for varied examples
Features
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** 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. ***** 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! This version of the Inference Ace app has access to all levels for up to 10 players. You can try this app by downloading the free version. The free version has 4 free levels for one player. You can purchase levels and players separately through 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

Inference Ace4 screens

Verdict

The call

The clearest difference is price: Kidioms 3 at $1.99 against Inference Ace's $8.99. Inference Ace's advantage is update cadence (every 7 months vs every 24 months) and device support (3 vs 1). On ads, in-app purchases and iOS requirement 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

Kidioms 3 costs $1.99 and Inference Ace $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Kidioms 3 ships an update every 24 months, Inference Ace every 7 months. The most recent releases landed on October 17, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
Kidioms 3 versus Inference Ace: the parameters behind the verdict, then further details
ParameterKidioms 3Inference Ace
Price$1.99 — better$8.99
Rating—4.5 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—4 — better
Update frequencyEvery 24 monthsEvery 7 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free with in-app purchases
DevicesiPadiPhone, iPad, iPod — better
Requires iOS13.212.2 — better
Further details — not scored
Size54 MB22 MB
Age rating4+4+
DeveloperVentura Educational SystemsJanine Toole

In-app purchases

None

Kidioms 3

No in-app purchases

None

Inference Ace

No in-app purchases

Questions

Is Kidioms 3 free?
Kidioms 3 costs $1.99, with no in-app purchases.
Is Inference Ace free?
Inference Ace costs $8.99, with no in-app purchases.
Do Kidioms 3 or Inference Ace have ads?
Neither Kidioms 3 nor Inference Ace shows ads.
Which is updated more often, Kidioms 3 or Inference Ace?
Kidioms 3 ships an update every 24 months, and Inference Ace every 7 months. Most recently, Kidioms 3 was updated on October 17, 2026 and Inference Ace on October 14, 2026.

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