Comparison

Sound Amplifier + vs Note Calculator Plus

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

Head to head
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.

About

Note Calculator Plus

Features
Read full description

Note Calculator Plus is the fastest, most beautiful way to count physical cash on iPhone and iPad. Whether you run a shop, drive a taxi, count your till at the end of a shift, or simply balance your wallet, enter the number of notes and coins you have, and Note Calculator Plus calculates your grand total instantly in your chosen currency. Designed with the polish of Apple Calculator and the simplicity of Apple Wallet, every screen feels native to iOS. No sign-up. No account. Fully offline. Your data never leaves your device. FEATURES Live Auto Totals Enter quantities with a stepper or the number pad. Notes total, coins total, grand total, and per-denomination subtotals update instantly. No Calculate button required. 45+ Currencies Supports USD, EUR, GBP, INR, JPY, CNY, AUD, CAD, SGD, MYR, THB, IDR, PHP, VND, PKR, BDT, NPR, LKR, SAR, AED, QAR, KWD, OMR, BHD, ZAR, NGN, KES, EGP, BRL, ARS, MXN, RUB, TRY, CHF, NOK, SEK, DKK, PLN, UAH, RON, CZK and all Eurozone countries. Search, Favorites and Recents Quickly find any currency, save favorites, and access recently used currencies. Undo and Redo Correct mistakes instantly. Long press the plus or minus buttons to adjust quantities by ten. Notes and Coins Chart View a visual breakdown of notes versus coins with a built-in chart. PDF Reports Export professional A4 PDF reports containing denomination details, subtotals and the grand total. Share using Mail, AirDrop, Files or Print. Export as PNG or JPEG Generate a receipt-style image and share it through WhatsApp, Messages, Mail or Photos. History Save every cash count locally with date, customer, reference number and location. Search, edit or duplicate previous records. Additional Details Add customer name, reference number, location and remarks for better record keeping. Smart Keyboard A custom accessory bar always shows which denomination you are editing together with its running subtotal. Copy Grand Total Copy the total with one tap and paste it into any accounting or finance app. Universal Design Optimized for all iPhone and iPad models with support for Dark Mode, Dynamic Type, VoiceOver and haptic feedback. Fully Offline No servers. No accounts. No cloud storage. Your cash count remains on your device. WHO IT'S FOR Retail cashiers Shop owners Taxi and rideshare drivers Currency exchange businesses Restaurant managers Anyone handling physical cash

Screenshots

Sound Amplifier +3 screens
Note Calculator Plus4 screens

Verdict

The call

The clearest difference is price: Sound Amplifier + at Free against Note Calculator Plus's $2.99. Sound Amplifier + also leads on iOS requirement (16.4 vs 26.5). Note Calculator Plus's advantage is ads (none vs shown). On 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

Sound Amplifier + is free to download; Note Calculator Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard3 real differences · 7 level
Sound Amplifier + versus Note Calculator Plus: the parameters behind the verdict, then further details
ParameterSound Amplifier +Note Calculator Plus
PriceFree — better$2.99
Rating3.7 (14 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings14 — better—
Update frequencyEvery 4 days—
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.4 — better26.5
Further details — not scored
Size61 MB13 MB
Age rating17+4+
Developerheekyung moonVijayvir Singh

In-app purchases

None

Sound Amplifier +

No in-app purchases

None

Note Calculator Plus

No in-app purchases

Questions

Is Sound Amplifier + free?
Sound Amplifier + is free to download, with no in-app purchases.
Is Note Calculator Plus free?
Note Calculator Plus costs $2.99, with no in-app purchases.
Do Sound Amplifier + or Note Calculator Plus have ads?
Sound Amplifier + shows ads; Note Calculator Plus does not.

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