Comparison

Between the Lines Advanced LT 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

Between the Lines Advanced LT

Practice interpreting vocal intonation, facial expressions, and body language with real photos and video clips. This app helps adolescents and adults understand social cues and idiomatic expressions through interactive activities.

Highlights
  • Interpreting vocal intonation
  • Analyzing facial expressions
  • Understanding body language
  • Practicing idiomatic expressions
  • Using real photos and video clips
  • Progress tracking
  • Customizable settings
Features
Read full description

Hamaguchi Apps for Speech, Language & Auditory Development's groundbreaking iPad app is designed for adolescents-adults who would benefit from practice interpreting vocal intonation, facial expressions, body language, and idiomatic or slang expressions. Using real photographs, voices and short mini-video clips of a variety of social situations and expressions, this app provides a dynamic way to help learn and practice interpreting the messages that are “between the lines” and simply can’t be replicated with worksheets and static flashcards. Scenes for the body language activity include a shopping mall, office, restaurant, family room, outdoors, school and party. This Lite app provides 12 samples of each of the three activities for a total of 36 tasks and is for a single user only. (The full version provides 225 total tasks) This app uses American expressions and body language. There are three activities in this app: 1. Listening: The user hears a voice speak a sentence, e.g., “Are they gonna turn that music down?!” (Often the same phrase is heard spoken in several different ways throughout the activity, but with different emotion and inflection) A question is then asked, “Who said it?” The user is shown a series of photographs. The user touches the correct facial expression that matches the voice. 2. Body Language: A very short video-clip is shown that depicts an interaction or situation. For example, one teen girl says to another, “I’m thinking I might go out with Jack on Friday night. What do you think?” Her friend responds by making a wishy-washy kind of “I’m not sure” face. The camera closes in on this actor and the narrator says, “What is she thinking?” The user’s task is to look at the choices of responses and select the one that matches the facial expression/body language. 3. Expressions: A very short video-clip is shown that depicts an actor speaking a sentence that contains an idiomatic expression, e.g., “Oh that salesman was a smooth talker!” The user is asked to select the best response to the question, "What does that mean?" Slang phrases that may be considered crude can be added in by being selected within the Activity setting, e,g, "Bunch of BS" and "hit the fan". This Lite version is for a single user only. The percentage correct is reported for each user’s performance on each of the three activities. The user can select his/her own individual settings. Settings include: Selection of the activities, order of the activities (or random), answer choices (group of 2, 3 or 4), how to display choices (automatically or manually) and whether to move forward automatically or by touching an arrow. Progress can be tracked, and displayed or not displayed. Reward animations are provided at selected intervals for a welcome fun and break. These are not games of skill but a fun diversion. The lite version includes one game, Dunk Tank. Data can be printed, saved or emailed. ***Please check out the extension activities at the end of the Information Page, which is on the home page. It is also available on our website. PRIVACY POLICY: We do NOT collect personal data from our users and have no ads. Personal data regarding user performance on the tasks on this app are self-contained and not transmitted in any way, unless the user chooses to email them to someone else. There are no in-app purchases in this app. A demo link will allow a user with internet access to view a video on YouTube to learn about the features of this app, as well as a link to our other apps in the iTunes store. Developed by licensed and ASHA-certified speech-language pathologist and author, Patti Hamaguchi, M.A., CCC-SLP. Visit our website: www.hamaguchiapps.com

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

Inference Ace4 screens

Verdict

The call

The clearest difference is rating: Between the Lines Advanced LT at 5.0 against Inference Ace's 3.6. Between the Lines Advanced LT also leads on in-app purchases (none vs 3) and review sentiment (100% vs 89%). Inference Ace's advantage is ratings volume (21 vs 2) and device support (3 vs 1). On price, 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. Inference Ace sells 3 one-off in-app purchases. Between the Lines Advanced LT asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Between the Lines Advanced LT holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: Inference Ace has 21 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Between the Lines Advanced LT's written reviews are positive against 89% of Inference Ace's.

UpkeepUpdate frequency

Between the Lines Advanced LT ships an update every 4 months, Inference Ace every 7 months. The most recent releases landed on September 16, 2026 and September 28, 2026 respectively.

Scorecard7 real differences · 3 level
Between the Lines Advanced LT versus Inference Ace: the parameters behind the verdict, then further details
ParameterBetween the Lines Advanced LTInference Ace
PriceFreeFree
Rating5.0 (2 ratings) — better3.6 (21 ratings)
Positive reviews100.0% of reviews — better88.6% of reviews
Number of ratings221 — better
Update frequencyEvery 4 months — betterEvery 7 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPadiPhone, iPad, iPod — better
Requires iOS14.012.2 — better
Further details — not scored
Size340 MB22 MB
Age rating4+4+
DeveloperHamaguchi Learning & Development, LLCJanine Toole

Customer experience

Between the Lines Advanced LT

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Inference Ace

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

In-app purchases

None

Between the Lines Advanced LT

No in-app purchases

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 Between the Lines Advanced LT free?
Between the Lines Advanced LT is free to download, with no in-app purchases.
Is Inference Ace free?
Inference Ace is free to download, with in-app purchases available.
Which has better reviews, Between the Lines Advanced LT or Inference Ace?
Between the Lines Advanced LT is rated higher. Between the Lines Advanced LT averages 5.0 out of 5 from 2 ratings, while Inference Ace averages 3.6 from 21 ratings.
Do Between the Lines Advanced LT or Inference Ace have ads?
Neither Between the Lines Advanced LT nor Inference Ace shows ads.
Which is updated more often, Between the Lines Advanced LT or Inference Ace?
Between the Lines Advanced LT ships an update every 4 months, and Inference Ace every 7 months. Most recently, Between the Lines Advanced LT was updated on September 16, 2026 and Inference Ace on September 28, 2026.

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