Sketch vs Sound Amplifier +
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sketch
This app allows users to create rapid, freehand drawings. It serves as a tool for artists to record observations, develop ideas, or quickly illustrate concepts. Sketching is often a fundamental part of art education.
- Rapid freehand drawing
- Idea development tool
- Visual illustration
- Artistic concept recording
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A sketch is a rapidly executed freehand drawing that is not usually intended as a finished work. A sketch may serve a number of purposes: it might record something that the artist sees, it might record or develop an idea for later use or it might be used as a quick way of graphically demonstrating an image, idea or principal. Sketching is generally a prescribed part of the studies of art students.
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.
- Live audio amplification
- 3-band equalizer with presets
- Speech boost and noise reduction
- Left/right balance control
- Safe-volume limiter
- Offline functionality
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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
Verdict
The clearest difference is rating: Sound Amplifier + at 4.0 against Sketch's 2.7. Sound Amplifier + also leads on in-app purchases (none vs 1) and update cadence (every 4 days vs every 59 months). Sketch's advantage is ads (none vs shown) and review sentiment (33% vs 0%). On price and ratings volume 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
Both are free to download. Sketch sells 1 one-off in-app purchase. Sound Amplifier + asks for nothing beyond the download.
Sound Amplifier + holds the better App Store score, 4.0 against 2.7. Both are backed by a comparable volume of ratings — 13 and 14 respectively. Written reviews complicate that: 33% of Sketch's written reviews are positive against 0% of Sound Amplifier +'s, so the app with the better star average is not the one people write more warmly about.
Sketch ships an update every 59 months, Sound Amplifier + every 4 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | Sketch | Sound Amplifier + |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (13 ratings) | 4.0 (14 ratings) — better |
| Positive reviews | 33.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 13 | 14 — better |
| Update frequency | Every 59 months | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 14 MB | 61 MB |
| Age rating | 4+ | 17+ |
| Developer | Orgajja | heekyung moon |
Customer experience
Sketch
Sound Amplifier +
In-app purchases
Sketch
- Upgrade$0.99
Sound Amplifier +
No in-app purchases
Questions
Is Sketch free?
Is Sound Amplifier + free?
Which has better reviews, Sketch or Sound Amplifier +?
Do Sketch or Sound Amplifier + have ads?
Which is updated more often, Sketch or Sound Amplifier +?
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