HB Auditory Memory vs Inference Ace
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HB Auditory Memory
This educational app helps students improve auditory memory, closure, and comprehension skills through engaging, multi-level missions. Players assist characters in saving MemoryTown from a forgetful villain by completing various listening activities.
- Auditory memory training
- Auditory closure exercises
- Comprehension skill development
- Memory for Numbers
- Memory for Words
- Memory for Details
- Auditory Closure
- Memory for WH Information
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HearBuilder is available for all users—families, educators, therapists, schools, and districts. Anyone witha HearBuilder subscription can access the full program. Join Recall Agents Kim and Joey as they race to save MemoryTown from the mischievous Dr. Forgetsit. Students strengthen auditory memory, closure, and comprehension skills through engaging missions that make learning feel like an adventure. Each multi‑level task in HearBuilder Auditory Memory sends students on a new challenge to outsmart Dr. Forgetsit. The humorous storylines and interactive activities keep learners motivated while they build essential skills for recalling verbal information. Program Features HearBuilder Auditory Memory teaches key strategies for remembering important information and includes five essential listening activities: • Memory for Numbers (3–7 digits) • Memory for Words (3–5 words organized by syllable) • Memory for Details (1–4 details) • Auditory Closure (Sentence Completion) • Memory for WH Information (2–3 sentences / 2–4 questions) HearBuilder Online (my.hearbuilder.com) • Access all four HearBuilder programs: Following Directions, Phonological Awareness, Auditory Memory, and Sequencing • Monitor progress and track student performance • Individualize each student’s settings and difficulty levels • Add adjustable background noise to increase challenge • Customize and print detailed reports
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 in-app purchases: HB Auditory Memory at none against Inference Ace's 3. HB Auditory Memory also leads on update cadence (every 3 months vs every 7 months). Inference Ace's advantage is review sentiment (89% vs 64%) and iOS requirement (12.2 vs 15.0). On price, rating, ratings volume 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. HB Auditory Memory asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 3.6 for HB Auditory Memory against 3.6 for Inference Ace. Both are backed by a comparable volume of ratings — 35 and 21 respectively. Written reviews are what separate them: 64% of HB Auditory Memory's written reviews are positive against 89% of Inference Ace's.
HB Auditory Memory ships an update every 3 months, Inference Ace every 7 months. The most recent releases landed on September 16, 2026 and June 9, 2026 respectively.
| Parameter | HB Auditory Memory | Inference Ace |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (35 ratings) | 3.6 (21 ratings) |
| Positive reviews | 63.6% of reviews | 88.6% of reviews — better |
| Number of ratings | 35 — better | 21 |
| Update frequency | Every 3 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.2 — better |
| Further details — not scored | ||
| Size | 242 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Super Duper, Inc. | Janine Toole |
Customer experience
HB Auditory Memory
Inference Ace
In-app purchases
HB Auditory Memory
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 HB Auditory Memory free?
Is Inference Ace free?
Which has better reviews, HB Auditory Memory or Inference Ace?
Do HB Auditory Memory or Inference Ace have ads?
Which is updated more often, HB Auditory Memory or Inference Ace?
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