Comparison

NXT Ai vs Sound Amplifier +

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

Head to head
About

NXT Ai

Features
Read full description

Meet your new AI assistant. Choose from 8 different AI models, each with unique strengths and capabilities. Whether you need creative solutions, technical expertise, analytical thinking, or friendly conversation, NXT AI lets you pick the right model for the job. Features: 8 different AI models to choose from Switch between models instantly Instant setup — just your name and preferred model Lightning-fast responses from cutting-edge AI 100% private — we don't store your data Works on iOS and web 24/7 availability How it works: Enter your name, select your preferred AI model, and start chatting. No accounts. No complications. No tracking. Switch models anytime to find the one that works best for your needs. Privacy First: We only collect your name and model preference for your current session. Once you close the app, everything is cleared. We don't use analytics, tracking, or sell your data. Your privacy is protected by design. The 8 Models: Choose from Creative, Analytical, Friendly, Technical, Professional, Casual, Expert, and Witty. Each brings a different perspective and approach to problem-solving. Why NXT AI: Skip the setup complexity. Skip the privacy concerns. Skip the noise. NXT AI gives you access to multiple AI models with zero friction. Available now on iOS. Download NXT AI today.

About

Sound Amplifier +

Enhance your hearing in everyday situations. This tool uses your phone's microphone to amplify nearby sounds and deliver them to your earphones in real time. Adjust sound with an equalizer, reduce background noise, and protect your hearing with a volume limiter.

Highlights
  • Live audio amplification
  • 3-band equalizer with presets
  • Speech boost and noise reduction
  • Left/right balance control
  • Safe-volume limiter
  • Offline functionality
Features
Read full description

Sound Amplifier picks up the voices and sounds around you with your phone's microphone and plays them into your earphones in real time — so a soft-spoken friend, the TV across the room or a lecture from the back row comes through more clearly. Missed what someone just said? Tap Replay last 10s to hear the last 10 seconds again. Want the sound shaped for your own ears? Take the short Hearing Test and a personal EQ is built from your answers. Please note: Sound Amplifier is an everyday assistive listening tool. It is not a medical hearing aid and it does not diagnose hearing loss. LISTEN • Live amplification from 0 to +40 dB, with a live level meter • Replay the last 10 seconds — kept in memory only and cleared when you stop • Voice leveller that evens out loud and soft voices automatically • Noise reduction that cuts low rumble from air conditioning, traffic and wind TUNE • 3-band equalizer: bass, mid and treble, each ±12 dB • Presets for Speech, Music, Outdoor and Flat • A Personal preset created from your Hearing Test • Left/right balance for when one ear needs more HEARING TEST • Soft tones at 250, 500, 1,000, 2,000, 4,000 and 6,000 Hz, one ear at a time • Turn the result into a personal EQ with one tap • Hearing over time: compare later tests with your first one (changes under 10 dB are shown as no change) • Earphones or headphones are required, because each ear is tested separately MY SETUPS • Save up to 8 named setups — TV, restaurant, lecture — and bring one back with a tap SAFETY • A safety limiter caps loud peaks at a level you choose (-18 to 0 dBFS) • The app will not amplify through the phone's own speaker, where the microphone would pick the sound up again and howl • If your earphones disconnect, amplifying stops and a card explains why; reconnect them and tap Resume GOOD FOR • TV dialogue without turning the room volume up for everyone • Conversations in cafés, restaurants and family dinners • Lectures, sermons, meetings and guided tours • Birdsong and quiet sounds on a walk Tips: start with low amplification and raise it slowly. Wired earphones have the shortest delay; Bluetooth earphones work too but add a little lag. If you are worried about your hearing, please talk to a hearing professional.

Screenshots

NXT Ai3 screens
Sound Amplifier +3 screens

Verdict

The call

The clearest difference is ads: NXT Ai at none against Sound Amplifier +'s shown. NXT Ai also leads on update cadence (daily vs every 4 days). On price, in-app purchases, device support and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

NXT Ai ships an update daily, Sound Amplifier + every 4 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
NXT Ai versus Sound Amplifier +: the parameters behind the verdict, then further details
ParameterNXT AiSound Amplifier +
PriceFreeFree
Rating—4.0 (14 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—14 — better
Update frequencyDaily — betterEvery 4 days
AdsNo — betterYes
In-app purchasesNoNo
Monetization—Ad-supported
DevicesiPhone, iPad — betteriPhone
Requires iOS17.016.4 — better
Further details — not scored
Size0 MB61 MB
Age rating12+17+
DeveloperMichael Croninheekyung moon

In-app purchases

None

NXT Ai

No in-app purchases

None

Sound Amplifier +

No in-app purchases

Questions

Is NXT Ai free?
NXT Ai is free to download, with no in-app purchases.
Is Sound Amplifier + free?
Sound Amplifier + is free to download, with no in-app purchases.
Do NXT Ai or Sound Amplifier + have ads?
Sound Amplifier + shows ads; NXT Ai does not.
Which is updated more often, NXT Ai or Sound Amplifier +?
NXT Ai ships an update daily, and Sound Amplifier + every 4 days. Most recently, NXT Ai was updated on October 25, 2026 and Sound Amplifier + on October 31, 2026.

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