Comparison

Sound Amplifier vs Citation Mapper

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

Citation Mapper

Features
Read full description

Citation Mapper helps lawyers, students, and legal researchers understand how cases connect. Search case law, build visual citation networks, and analyze relationships that matter. Follow cases and searches to stay current, get real‑time alerts, and keep key findings organized across devices. Key Features 1. Case search with courts, dates, judges, and docket filters 2. Visual citation networks with weighted relationships and influence scores 3. One‑tap network building from a seed case with live progress tracking 4. AI‑assisted insights, citation explanations, and relationship summaries (Premium) 5. Why‑Citations summaries in PDF/Word (Premium) 6. Judges intelligence hub with financial disclosures and opinions 7. Oral‑argument transcripts with downloadable audio 8. Real‑time alerts for cases and saved searches 9. Save and organize cases across devices 10. Export and print networks (PDF/PNG/SVG) 11. Clean, dark‑mode friendly interface Premium Access Unlock advanced AI analysis, summaries, exports, and expanded limits with a subscription. Subscription management and renewal are handled in the mobile app.

Screenshots

Sound Amplifier3 screens
Citation Mapper4 screens

Verdict

The call

The clearest difference is update cadence: Citation Mapper at daily against Sound Amplifier's every 2 weeks. Citation Mapper also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support 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 Citation Mapper sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Sound Amplifier ships an update every 2 weeks, Citation Mapper daily. The most recent releases landed on October 14, 2026 and September 28, 2026 respectively.

Scorecard2 real differences · 8 level
Sound Amplifier versus Citation Mapper: the parameters behind the verdict, then further details
ParameterSound AmplifierCitation Mapper
PriceFreeFree
Rating4.6 (1.2K ratings) — better—
Positive reviews34.5% of reviews—
Number of ratings1.2K — better—
Update frequencyEvery 2 weeksDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.013.0 — better
Further details — not scored
Size23 MB26 MB
Age rating+44+
DeveloperMighty Fine Apps LLCAdeyemi Salau

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

Citation Mapper

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

Citation Mapper

One-time6
  • Professional Monthly$24.99
  • Premium Monthly$49.99
  • Enterprise Monthly$99.99
Show 3 more
  • Professional Yearly$239.99
  • Premium Yearly$479.99
  • Enterprise Yearly$959.99

Questions

Is Sound Amplifier free?
Sound Amplifier is free to download, with in-app purchases available.
Is Citation Mapper free?
Citation Mapper is free to download, with in-app purchases available.
Do Sound Amplifier or Citation Mapper have ads?
Neither Sound Amplifier nor Citation Mapper shows ads.
Which is updated more often, Sound Amplifier or Citation Mapper?
Sound Amplifier ships an update every 2 weeks, and Citation Mapper daily. Most recently, Sound Amplifier was updated on October 14, 2026 and Citation Mapper on September 28, 2026.

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