Comparison

HB Auditory Memory 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

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.

Highlights
  • Auditory memory training
  • Auditory closure exercises
  • Comprehension skill development
  • Memory for Numbers
  • Memory for Words
  • Memory for Details
  • Auditory Closure
  • Memory for WH Information
Features
Read full description

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

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

HB Auditory Memory4 screens
Inference Ace4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Inference Ace sells 3 one-off in-app purchases. HB Auditory Memory asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
HB Auditory Memory versus Inference Ace: the parameters behind the verdict, then further details
ParameterHB Auditory MemoryInference Ace
PriceFreeFree
Rating3.6 (35 ratings)3.6 (21 ratings)
Positive reviews63.6% of reviews88.6% of reviews — better
Number of ratings35 — better21
Update frequencyEvery 3 months — betterEvery 7 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.2 — better
Further details — not scored
Size242 MB22 MB
Age rating4+4+
DeveloperSuper Duper, Inc.Janine Toole

Customer experience

HB Auditory Memory

All ratings34 ratings
Positive58.8%
Neutral11.8%
Negative29.4%
Written reviews11 reviews
Positive63.6%
Neutral9.1%
Negative27.3%

Inference Ace

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

In-app purchases

None

HB Auditory Memory

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 HB Auditory Memory free?
HB Auditory Memory 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, HB Auditory Memory or Inference Ace?
HB Auditory Memory and Inference Ace are both rated 3.6 out of 5 on the App Store, from 35 and 21 ratings respectively.
Do HB Auditory Memory or Inference Ace have ads?
Neither HB Auditory Memory nor Inference Ace shows ads.
Which is updated more often, HB Auditory Memory or Inference Ace?
HB Auditory Memory ships an update every 3 months, and Inference Ace every 7 months. Most recently, HB Auditory Memory was updated on September 16, 2026 and Inference Ace on June 9, 2026.

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