Between the Lines Level2 Lt HD vs Inference Ace
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Between the Lines Level2 Lt HD
Practice interpreting social cues like vocal intonation, facial expressions, and body language through interactive photos, voices, and video clips. This app helps older students understand non-literal communication, including idioms and slang, in a dynamic, engaging way.
- Interpreting vocal intonation
- Analyzing facial expressions
- Understanding body language
- Recognizing idiomatic expressions
- Practicing perspective-taking
- Progress tracking
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Hamaguchi Apps for Speech, Language & Auditory Development's groundbreaking iPad app is designed for older elementary through high school students, who would benefit from practice interpreting vocal intonation, facial expressions, perspective-taking, 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 messages that are “between the lines” and simply can’t be replicated with worksheets and static flashcards. Check out our demo of this app on Youtube: https://www.youtube.com/watch?v=rRy4QF1E1Y8 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 a total of 199 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., “What did he say?! Are you serious?!” (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, in a scene at a park, there are two girls whispering to each other and clearly having “girl talk”, and giggling. Another girl walks up and attempts to join the conversation, but is ignored. 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 or slang expression, e.g., “They caught the burglar red-handed.’” The user is then asked, “What does that mean?” Choices are provided. The 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), praise phrases and correct sound effect bell on/off; 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. One reward animation is included (Dunk Tank). This is not a game of skill but a fun diversion, which can be turned off or set to intervals. *Please contact our tech support if you are experiencing any technical issues with our apps. We will always help you troubleshoot it and get back to you generally within one business day. We cannot respond to reviews and there are generally easy solutions to every issue. info@hamaguchiapps.com 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. To find out more about this app and our other upcoming projects, visit our website: www.hamaguchiapps.com
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.
- 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
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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 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
Verdict
The clearest difference is review sentiment: Inference Ace at 89% against Between the Lines Level2 Lt HD's 0%. Inference Ace also leads on device support (3 vs 1) and iOS requirement (12.2 vs 14.0). Between the Lines Level2 Lt HD's advantage is in-app purchases (none vs 3). 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
Both are free to download. Inference Ace sells 3 one-off in-app purchases. Between the Lines Level2 Lt HD asks for nothing beyond the download.
Between the Lines Level2 Lt HD ships an update every 6 months, Inference Ace every 7 months. The most recent releases landed on September 12, 2026 and June 9, 2026 respectively.
| Parameter | Between the Lines Level2 Lt HD | Inference Ace |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.6 (21 ratings) — better |
| Positive reviews | 0.0% of reviews | 88.6% of reviews — better |
| Number of ratings | — | 21 — better |
| Update frequency | Every 6 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 12.2 — better |
| Further details — not scored | ||
| Size | 219 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Hamaguchi Learning & Development, LLC | Janine Toole |
Customer experience
Between the Lines Level2 Lt HD
Inference Ace
In-app purchases
Between the Lines Level2 Lt HD
No in-app purchases
Inference Ace
- Upgrade to 2 Players$1.99
- Inference Ace: Buy All Levels$2.99
- Upgrade to 10 Players$2.99
Questions
Is Between the Lines Level2 Lt HD free?
Is Inference Ace free?
Do Between the Lines Level2 Lt HD or Inference Ace have ads?
Which is updated more often, Between the Lines Level2 Lt HD or Inference Ace?
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