74Log vs Sound Amplifier +
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
74Log
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73Log is a modern amateur radio logging app designed for ham radio operators who want to track their contacts (QSOs) easily and efficiently. KEY FEATURES: • Quick QSO Logging — Log contacts in seconds. Band, mode, frequency, and power carry over from your last QSO automatically. • World Map — See your contacts plotted on a map with lines showing your reach. Filter by band or mode. Toggle repeaters, QSOs, and grid squares on and off. • Repeater Directory — Browse, favourite, and contribute to a shared repeater directory. Long-press for quick programming details. Output/Input frequencies clearly labelled. • GPS & Grid Squares — Auto-fill your Maidenhead locator from GPS, or pick grid squares by tapping the map. Live distance and bearing to the other station. • All Bands & Modes — 160m to 13cm, SSB, CW, FM, FT8, DMR, D-STAR, C4FM, and more. • Callsign Book — Save operator info, mark favourite contacts, and look up callsigns on QRZ.com. • Offline First — Log contacts without internet. Everything syncs automatically when you're back online. • Cloud Sync — Your logs sync securely across all your devices. • Search & Filter — Find past contacts by callsign, band, mode, or date. • Distance Units — Choose kilometres, miles, or nautical miles. Whether you're operating from home, portable, or mobile, 73Log makes it easy to keep an accurate log of all your amateur radio contacts. 73!
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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Turn up the world around you. Sound Amplifier uses your phone's microphone to pick up nearby sound and boost it straight to your earphones in real time — so a quiet talker, a TV across the room or a conversation in a noisy café comes through clearer. Tune the sound to your ears with a 3-band equalizer, cut background hiss, and stay protected with a built-in safe-volume limiter. PLEASE NOTE: Sound Amplifier is a general-purpose assistive listening tool for boosting everyday sounds. It is not a medical hearing aid or a medical device. WHAT YOU GET • Live amplification — start listening and nearby sound is amplified to your earphones instantly, with an adjustable gain dial and a live VU meter showing the level. • 3-band equalizer & presets — shape the tone with Bass, Mid and Treble, or tap a preset for Speech, Music, Outdoor or Flat. • Speech boost & noise reduction — lift voices forward and soften steady background hiss and hum so people are easier to follow. • Left / right balance — send more sound to one side if one ear needs it louder than the other. • Safe-volume limiter — caps sudden loud peaks at a level you choose, so amplified sound never jumps to an uncomfortable volume. Start gentle and raise it gradually. WHO IT'S FOR Anyone who wants a little extra help hearing in everyday situations — following a soft-spoken friend, catching dialogue, listening across a room, or cutting through background noise. Always use earphones or headphones for the best result and to avoid feedback whistling. HOW IT WORKS Everything runs on your device using the microphone and your connected earphones. No internet or account is required to listen. AN HONEST NOTE This is a convenience and assistive-listening tool, not a substitute for a medical hearing aid or professional hearing care. If you have concerns about your hearing, please see an audiologist. Begin at a low amplification and keep the volume comfortable.
Screenshots
Verdict
The clearest difference is ads: 74Log at none against Sound Amplifier +'s shown. 74Log also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.4). On price, update cadence 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
74Log ships an update weekly, Sound Amplifier + every 4 days. The most recent releases landed on September 16, 2026 and September 12, 2026 respectively.
| Parameter | 74Log | Sound Amplifier + |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.2 (10 ratings) — better |
| Number of ratings | — | 10 — better |
| Update frequency | Weekly | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 35 MB | 63 MB |
| Age rating | 4+ | 17+ |
| Developer | Neil Fincham | heekyung moon |
In-app purchases
74Log
No in-app purchases
Sound Amplifier +
No in-app purchases





