Comparison

Sound Amplifier vs Scrap Science

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

Head to head
About

Sound Amplifier

Transform your phone into a powerful hearing aid. This app amplifies sound up to 100x, enhances voice clarity, and reduces background noise. Protect your hearing while easily listening to conversations, lectures, or TV with connected headphones.

Highlights
  • Volume amplification up to 100x
  • Voice isolation for clearer conversations
  • Hearing protection features
  • Background app operation
  • Simple one-tap amplification
  • Bluetooth headphone support
Features
Read full description

Sound Amplifier turns your phone into a hearing aid. Make your volume 100x louder and eliminate background noise while protecting your ears. Just connect your existing headphones. What you can do with Sound Amplifier • Easily listen to conversations with friends and loved ones • Use bluetooth headphones to listen to the TV and lectures • Discuss important, confidential topics with your doctor Our newest features • Amplification makes voices louder and crisper • Voice isolation eliminates background noise • Loudness protect protects your hearing Simple to Use • Connect your headphones and start amplifying with one tap • Everything is labeled and easy to read, no guessing at controls! Discrete and Practical • You can use your existing headphones to hear more clearly • Just rest your phone on the table near the person talking Some Extras • You can amplify the volume even with the app in the background • Fast and friendly support Terms of Service: https://www.mightyfine.app/sound-amplifier-terms Privacy Policy: https://www.mightyfine.app/sound-amplifier-privacy-policy

About

Scrap Science

This AI-powered app helps U.S. scrap recycling professionals identify scrap categories, assess material content, and impurity levels. It provides real-time pricing for identified materials, enabling profitable decisions on the spot. Streamline your workflow with this fast, easy, and reliable tool.

Highlights
  • AI-powered scrap identification
  • Material content assessment
  • Impurity level analysis
  • Real-time pricing
  • Workflow streamlining
  • Patent-authorized innovation
Features
Read full description

Our cutting-edge app, designed specifically for professionals in the U.S. scrap recycling industry, is the ultimate tool to streamline your workflow. Powered by advanced AI technology, the app can instantly identify scrap categories, assess material content, impurity levels, and more — all with unmatched accuracy. It even provides real-time pricing for the identified materials, giving you the information you need to make smart, profitable decisions on the spot. With patent-authorized innovation, this app stands alone in the recycling industry, offering a fast, easy, and reliable way to evaluate scrap materials. Whether you’re in the yard or on the move, stay ahead with powerful tools designed for today’s recycling professionals. Try it out -Intermediate member rights: Activate 10 recognitions results viewing -Purchase type: Once -Purchase price: Based on the iAP application information, for example, Try it out is $0.99. -Payment: After the user confirms the purchase and makes the payment, it will be credited to their iTunes account. -Privacy Policy: https://share.doctorscrap.com/privacy_policy_en.html -User Agreement: https://share.doctorscrap.com/user_policy_en.html Monthly auto-subscription -Advanced member rights: Unlimited viewing of recognition results and prices per month -Subscription cycle: 1 month -Subscription price: Based on the iAP application information, for example, a continuous monthly subscription for products is $9.99 per month. Enterprise Package -Advanced member rights: Unlimited viewing of recognition results and prices per month -Subscription cycle: 1 month -Subscription price: Based on the iAP application information, for example, a continuous monthly subscription for products is $9.99 per 10 people per month) -Payment: After the user confirms the purchase and makes the payment, it will be credited to their iTunes account. -Cancel Renewal: To cancel the renewal, please manually turn off the automatic renewal feature in the iunes/Apple 1D settings management 24 hours before the current subscription cycle expires. -Renewal: The Apple iTunes account will be charged within 24 hours before its expiration. After successful deduction, the subscription cycle will be extended by one subscription cycle. -Privacy Policy: https://share.doctorscrap.com/privacy_policy_en.html -User Agreement: https://share.doctorscrap.com/user_policy_en.html -Automatic Subscribe Service Agreement: https://share.doctorscrap.com/subscribe_en.html

Screenshots

Sound Amplifier3 screens
Scrap Science3 screens

Verdict

The call

The clearest difference is review sentiment: Scrap Science at 100% against Sound Amplifier's 34%. Sound Amplifier's advantage is ratings volume (1.2K vs 3) and rating (4.6 vs 4.3). 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. Sound Amplifier sells 4 in-app purchases, starting at $9.99 per month and Scrap Science sells 6 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Sound Amplifier holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Sound Amplifier has 1.2K ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 34% of Sound Amplifier's written reviews are positive against 100% of Scrap Science's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on September 23, 2026 and June 11, 2026 respectively.

Scorecard3 real differences · 7 level
Sound Amplifier versus Scrap Science: the parameters behind the verdict, then further details
ParameterSound AmplifierScrap Science
PriceFreeFree
Rating4.6 (1.2K ratings) — better4.3 (3 ratings)
Positive reviews34.5% of reviews100.0% of reviews — better
Number of ratings1.2K — better3
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size23 MB71 MB
Age rating+44+
DeveloperMighty Fine Apps LLCTY International LLC

Customer experience

Sound Amplifier

All ratings1,230 ratings
Positive90.7%
Neutral3.7%
Negative5.6%
Written reviews87 reviews
Positive34.5%
Neutral8.0%
Negative57.5%

Scrap Science

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Sound Amplifier

Reported bugs

3 issues
  • Subscription charges even after cancellation
  • Inability to cancel free trial
  • Compatibility issues with certain devices

Requested features

3 requests
  • Free trial option without payment info
  • Ability to use without subscription
  • Integration with iOS accessibility features

Scrap Science

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Sound Amplifier

Subscriptions4
  • Full Access3 variants$9.991 Month
  • Full Access3 Days trial$49.991 Year
  • Full Access3 Days trial$59.991 Year
Show 1 more
  • Full Access7 Days trial$99.991 Year
6 purchases

Scrap Science

Subscriptions5
  • Monthly auto-subscription$9.991 Month
  • Enterprise Package 1$79.991 Month
  • Enterprise Package 2$148.991 Month
Show 2 more
  • Enterprise Package 3$209.001 Month
  • Enterprise Package 4$590.001 Month
One-time1
  • Try it out$0.99

Questions

Is Sound Amplifier free?
Sound Amplifier is free to download, with in-app purchases available.
Is Scrap Science free?
Scrap Science is free to download, with in-app purchases available.
Which has better reviews, Sound Amplifier or Scrap Science?
Sound Amplifier is rated higher. Sound Amplifier averages 4.6 out of 5 from 1.2K ratings, while Scrap Science averages 4.3 from 3 ratings.
Do Sound Amplifier or Scrap Science have ads?
Neither Sound Amplifier nor Scrap Science shows ads.
Which is updated more often, Sound Amplifier or Scrap Science?
Sound Amplifier ships an update every 2 weeks, and Scrap Science every 2 weeks. Most recently, Sound Amplifier was updated on September 23, 2026 and Scrap Science on June 11, 2026.

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