HB Auditory Memory vs Co
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
Co
This app provides advanced word prediction and spelling support for students. It offers grammar-smart suggestions and access to millions of topic-specific dictionaries to aid in writing. Built-in text-to-speech functionality helps users review their work.
- Grammar-smart word prediction
- Millions of topic-specific dictionaries
- Flexspell™ technology for spelling errors
- Built-in text-to-speech
- Personalized vocabulary and settings
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Co:Writer® Universal app and third-party keyboard gives students easy access to word prediction on iPad, iPad Pro, iPhone, and iPod Touch. Students simply sign in to their Co:Writer Universal accounts to write with their personal settings and vocabulary. ABOUT CO:WRITER UNIVERSAL This version is for schools with a Co:Writer Universal license only. Users without a Co:Writer Universal license must purchase the Co:Writer app. HOW DOES CO:WRITER WORK? As letters are typed, Co:Writer predicts the intended word with a selection of word suggestions using powerful grammar-smart word prediction. These suggestions can be read aloud with a swipe. Selecting the intended word places it into the writing document. For feedback while writing (and after writing) built-in text to speech can be used to read letters, words, sentences, and the entire document. 4+ MILLION TOPIC-SPECIFIC DICTIONARIES Co:Writer has access to a main prediction dictionary (that includes core words) and Topic Dictionaries (that includes topic specific words). Co:Writer can access over 4 million topic-specific dictionaries which are activated based on the writing task. A small sampling of the variety of topic dictionaries: - America's Cup - Apple II - Compare and Contrast - Dinosaurs - Grumpy Cat - History of the Peloponnesian War - Mahatma Gandhi - My Dog - Pig Latin - Rolls-Royce Silver Ghost - SpongeBob SquarePants - Tommy (album) - Wonders of the World SPELLING SUPPORT Co:Writer handles the widest range of spelling mistakes through its Flexspell™technology including phonetic spelling and inventive spelling errors (letter omissions, word ending omissions, letter reversals, etc). Examples of how Co:Writer aides with phonetic and/or inventive spelling: Before Co:Writer The blk jargon flu over the bra lfnt. R u hpy to ce me? I no hw to nor the fone. After Co:Writer The black dragon flew over the gray elephant. Are you happy to see me? I know how to answer the phone. GRAMMAR SUPPORT Co:Writer bases its prediction off of proper grammar, and uses its understanding of grammar to accurately predict words within the framework of valid sentence structures. Examples of how Co:Writer aides with grammar: Dogs are furry. (noun, verb, adj.) - When you typed d-o, you get plural noun choices Three very mangy dogs ran down the street. (adj., adv., adj., noun, verb… etc.) - After typing three, very, mangy, you get plural noun choices, then you get plural verb tenses. OTHER FEATURES - Built-in Text to Speech - Export
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Verdict
The clearest difference is review sentiment: HB Auditory Memory at 64% against Co's 8%. HB Auditory Memory also leads on rating (3.6 vs 2.6). Co's advantage is iOS requirement (10.0 vs 15.0). On price, ratings volume, 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. Neither carries in-app purchases, so what you see is what you pay.
HB Auditory Memory holds the better App Store score, 3.6 against 2.6. Both are backed by a comparable volume of ratings — 35 and 17 respectively. Written reviews point the same way: 64% of HB Auditory Memory's written reviews are positive against 8% of Co's.
HB Auditory Memory ships an update every 3 months, Co every 4 months. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.
| Parameter | HB Auditory Memory | Co |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (35 ratings) — better | 2.6 (17 ratings) |
| Positive reviews | 63.6% of reviews — better | 8.3% of reviews |
| Number of ratings | 35 — better | 17 |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 242 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Super Duper Publications | Don Johnston Incorporated |
Customer experience
HB Auditory Memory
Co
In-app purchases
HB Auditory Memory
No in-app purchases
Co
No in-app purchases
Questions
Is HB Auditory Memory free?
Is Co free?
Which has better reviews, HB Auditory Memory or Co?
Do HB Auditory Memory or Co have ads?
Which is updated more often, HB Auditory Memory or Co?
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