SoundClass vs EGD2021
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SoundClass
This app uses AI to detect and record various sounds in your environment, providing real-time alerts. It's particularly useful for nighttime awareness, sleep analysis, and documenting incidents.
- AI sound detection
- Real-time alerts
- Sleep quality analysis
- Sound recording and playback
- Mosquito and animal sound detection
- Everyday sound identification
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Turn your iPhone or iPad into a personal AI sound detector. SoundClass recognizes important sounds around you, keeps a clear detection history, and helps its models adapt to your environment. HOW IT WORKS 1. Choose a category: Animals, Baby, Health, Mosquitoes, or Security. 2. Start detection and select the sensitivity that fits your room. 3. Receive a local notification when SoundClass confirms a sound. 4. Review saved audio detections as correct, incorrect, or another sound. 5. Use those reviews to train improved models for your environment. SOUNDS SOUNDCLASS CAN RECOGNIZE • Cats, dogs, and mice • Baby crying and snoring • Coughing, sneezing, and snoring • Mosquito activity • Door knocks, glass breaking, gunshots, and alarm sirens FEATURES • Live AI sound recognition on your device • Adjustable sensitivity and fine-tuning controls • Detection history with audio clips and confidence details • Audio review and personalized model training • Local notifications for confirmed detections • Optional HomeKit light response • Multiple themes with light and dark appearance Recognition accuracy can vary with distance, background noise, device placement, microphone quality, and the sound itself. SoundClass is an assistive utility and must not be used as an emergency, medical, security, or safety-critical alert system. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ GoldTime Terms and Conditions: https://goldtime.com.ar/terms.html
EGD2021
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This version of the app is written by Lam Yeung Shun under the supervision of Dr. Shiu Yin Yuen. The application will act as a guide dog, as an auxiliary tool to guide the visually impaired people (VIP) to the destination in both indoor and outdoor environments. Under the guidance of the navigation, the VIP can easily follow the instructions from the recorded path. The path can be recorded by themselves or received from other users.
Screenshots
Verdict
The clearest difference is in-app purchases: EGD2021 at none against SoundClass's 2. EGD2021 also leads on ads (none vs shown) and iOS requirement (14.0 vs 26.0). SoundClass's advantage is update cadence (every 10 days vs every 25 months). On price 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
Both are free to download. SoundClass sells 2 one-off in-app purchases. EGD2021 asks for nothing beyond the download.
SoundClass ships an update every 10 days, EGD2021 every 25 months. Both last shipped on September 8, 2026.
| Parameter | SoundClass | EGD2021 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (10 ratings) — better | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 10 days — better | Every 25 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 54 MB | 1 MB |
| Age rating | 12+ | 4+ |
| Developer | Javier Ariel Bargas | Shiu Yin Yuen |
In-app purchases
SoundClass
- Battery x 10$0.99
- Battery x 40$1.99
EGD2021
No in-app purchases









