Comparison

Multisaurus vs Hearing Booster for Airbuds

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Multisaurus

Explore word relationships beyond simple synonyms. Discover connections between synonyms of multiple words, find shared terms, and exclude specific related words to refine your vocabulary. Ideal for writers and students seeking precise language.

Highlights
  • Connects to multiple thesauruses
  • Find synonyms of multiple words
  • Exclude synonyms of other words
  • Find shared synonyms between words
  • Discover word relationship connections
Features
Read full description

An invaluable tool for writers, Multisaurus is a powerful and exciting new approach to a thesaurus. Not just merely a list of synonyms, Multisaurus is a platform for discovering the connections between the synonyms of multiple words. Multisaurus has many exciting features: 1. Multisaurus is connected to multiple thesauruses (or is that thesauri?) 2. Find the synonyms of multiple words - let's say you would like to see all the synonyms of both 'fun' AND 'games'. Tap on a word to see which synonyms relate to it. 3. Find the synonyms of a word EXCLUDING the synonyms of another word! Let's say you would like to see all the synonyms of 'bright', EXCLUDING the synonyms of 'smart'. 4. Find the synonyms that two words SHARE. Let's say you would like to see all the synonyms that both 'eat' and 'drink' SHARE. Perfect for those who care about finding the right word - a dangerously useful tool for writers, journalists, students and academics. How much does it cost? Use Multisaurus absolutely free and obligation free for 14 days. To continue using Multisaurus after this time, you will be requested to make a small in-app purchase.

About

Hearing Booster for Airbuds

Features
Read full description

Turn your Airbuds into a powerful hearing booster device. Hearing Booster for Airbuds amplifies ambient sound, boosts speech clarity, and lets you customize your hearing experience — all from your iPhone. WANT TO HEAR BETTER? Designed for everyday use. No expensive hardware. Just your Airbuds and this app. KEY FEATURES • Sound Amplifier — Boost and amplify sounds around you in real time using your AirPods Pro microphones • Live Listen Enhancement — Supercharge Apple's Live Listen mode for clearer, more focused audio • Custom EQ Profiles — Fine-tune frequencies to match your hearing needs with a fully adjustable equalizer • Hearing Test — Take a quick hearing test to understand your hearing profile and auto-configure settings • Noise Reduction — Reduce background noise so speech and important sounds stand out • Volume Control — Precise control over amplification levels for comfort in any environment • Tinnitus Relief Presets — Dedicated sound profiles to help mask tinnitus symptoms • Multiple Profiles — Save and switch between custom hearing profiles for different environments (home, office, outdoors) HOW IT WORKS Open the app, put on your Airbuds, and tap Start. The app uses your Airbuds's built-in microphones alongside audio processing to deliver clear, amplified sound — adjustable to your preferences in real time. HEARING HEALTH This app is intended as a personal sound amplification product (PSAP) and is not a medical device. It is not intended to diagnose, treat, cure, or prevent any hearing condition. Consult a licensed audiologist for medical hearing concerns. PRIVACY No audio is recorded or stored. All processing happens on-device. Download now and hear the difference. Term: https://sites.google.com/view/hoang-terms/ Privacy: https://sites.google.com/view/hoang-privacy/

Screenshots

Multisaurus3 screens
Hearing Booster for Airbuds4 screens

Verdict

The call

The clearest difference is device support: Multisaurus at 3 against Hearing Booster for Airbuds's 1. Multisaurus also leads on iOS requirement (11.0 vs 17.0). On price, update cadence, ads and in-app purchases 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. Multisaurus sells 2 one-off in-app purchases and Hearing Booster for Airbuds sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Multisaurus ships an update every 4 months, Hearing Booster for Airbuds every 3 months. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Multisaurus versus Hearing Booster for Airbuds: the parameters behind the verdict, then further details
ParameterMultisaurusHearing Booster for Airbuds
PriceFreeFree
Rating4.1 (238 ratings) — better—
Positive reviews42.9% of reviews—
Number of ratings238 — better—
Update frequencyEvery 4 monthsEvery 3 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS11.0 — better17.0
Further details — not scored
Size18 MB38 MB
Age rating9+4+
DeveloperCraig GrummittHoang Le

Bugs and requests

Multisaurus

Reported bugs

12 issues
  • iPhone froze after opening app
  • App still cannot be used after freezing
  • Constant feedback request interruptions
  • Premium version stopped working
  • Adding additional words does nothing
Show 7 more
  • No added synonyms after the first word
  • App doesn't work on iPad
  • Minor bugs in resetting words
  • No 'go' or 'enter' button to submit word
  • No instructions provided
  • App hit with a paywall immediately
  • App advertised as free but not

Requested features

3 requests
  • Add dictionary definitions for each word
  • Incorporate a way to look up definitions of results
  • Add an introduction jingle

Hearing Booster for Airbuds

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Multisaurus

One-time2
  • 14-day Trial.Free
  • Activate Multisaurus$0.99
2 purchases

Hearing Booster for Airbuds

Subscriptions2
  • Monthly Hearing Aid Pro$2.991 Month
  • Yearly for Hearing Aid Pro7 Days trial$29.991 Year

Questions

Is Multisaurus free?
Multisaurus is free to download, with in-app purchases available.
Is Hearing Booster for Airbuds free?
Hearing Booster for Airbuds is free to download, with in-app purchases available.
Do Multisaurus or Hearing Booster for Airbuds have ads?
Neither Multisaurus nor Hearing Booster for Airbuds shows ads.
Which is updated more often, Multisaurus or Hearing Booster for Airbuds?
Multisaurus ships an update every 4 months, and Hearing Booster for Airbuds every 3 months. Most recently, Multisaurus was updated on November 1, 2026 and Hearing Booster for Airbuds on October 31, 2026.

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