Comparison

Spy vs Sound Recognition

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

Head to head
About

Spy

This app uses advanced network scanning to detect hidden cameras in your vicinity with high accuracy. It identifies suspicious devices transmitting data and can help you locate them. Protect your privacy by scanning Wi-Fi networks for unauthorized surveillance equipment.

Highlights
  • Detects hidden cameras with 99.9% accuracy
  • Scans Wi-Fi networks for suspicious devices
  • Identifies cameras transmitting data
  • Helps locate hidden cameras
  • Advanced network tooling
Features
Read full description

Hidden Camera Finder is the only tool with 99.9% accuracy of detecting spy cameras! Our engineers have developed advanced network tooling to detect hidden cameras in your network. How does it work? Make sure you’re connect to the Wi-Fi network of the place you are visiting and tap on ‘Start Scanning’ and let our tool do the work. Our algorithm will scan your network and find out any device that is online. Using our advanced technology, the cameras will be marked as suspicious on the list. It will detect any cameras which are transmitting data to its owner or creating records. You can even connect to the hidden camera and locate its position! Premium Subscription info: Price: - Auto-renewable subscription : 1 Week - Per Week ($4.99), 1 Year - Per Year ($19.99) - One-time Purchase ($49.99) - Payment will be charged to your iTunes account at confirmation of purchase. - Subscriptions will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. - The account will be charged for renewal within 24-hours before the end of the current period, and identify the cost of the renewal. - Your account will be following your plan, within 24 hours before the end of the current period. - You can manage or turn off auto-renew in your Apple ID account settings any time after purchase. - This price is for United States customers. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence. Privacy Policy: https://revoo.studio/privacy-policy.html Terms of Use: https://revoo.studio/terms-of-service.html

About

Sound Recognition

This utility app notifies users with a screen change and light when a specific target voice is recognized. It also displays the most likely speech recognition result, including its type and evaluation value.

Highlights
  • Voice recognition alerts
  • Screen and light notification
  • Displays speech recognition results
  • Configurable recognition threshold
Features
Read full description

When the selected recognition target voice is recognized, user will be notified by a screen change and light. *Notification will be made only if the evaluation value exceeds the preset recognition threshold. It also displays the most likely speech recognition result (type, evaluation value) among the current speech recognition results.

Screenshots

Spy3 screens
Sound Recognition1 screens

Verdict

The call

The clearest difference is rating: Spy at 4.5 against Sound Recognition's 1.0. Spy also leads on ads (none vs shown) and ratings volume (1.1K vs 1). Sound Recognition's advantage is in-app purchases (none vs 6). On price, update cadence, 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. Spy sells 6 in-app purchases, starting at $4.99 per 7 days. Sound Recognition asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Spy holds the better App Store score, 4.5 against 1.0. That said, the two scores are not equally well evidenced: Spy has 1.1K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Spy ships an update every 4 weeks, Sound Recognition every 2 weeks. The most recent releases landed on October 27, 2026 and October 7, 2026 respectively.

Scorecard5 real differences · 5 level
Spy versus Sound Recognition: the parameters behind the verdict, then further details
ParameterSpySound Recognition
PriceFreeFree
Rating4.5 (1.1K ratings) — better1.0 (1 ratings)
Positive reviews45.3% of reviews—
Number of ratings1.1K — better1
Update frequencyEvery 4 weeksEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.8.3 — better
Further details — not scored
Size26 MB36 MB
Age rating4+4+
Developer6Hive OUHideaki Uchikoshi

Customer experience

Spy

All ratings1,110 ratings
Positive85.6%
Neutral4.9%
Negative9.5%
Written reviews53 reviews
Positive45.3%
Neutral5.7%
Negative49.1%

Sound Recognition

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

Spy

Reported bugs

3 issues
  • Bugs in the app
  • Subscription issues
  • Compatibility problems

Requested features

2 requests
  • Better instructions
  • Free trial option

Sound Recognition

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Spy

Subscriptions4
  • Weekly Premium Membership$4.997 Days
  • Weekly Premium Membership3 Days trial$4.997 Days
  • Spy Yearly Premium Membership$19.991 Year
Show 1 more
  • Yearly Premium Membership$29.991 Year
One-time2
  • Lifetime Premium Membership$39.99
  • Lifetime Premium Membership$59.99
None

Sound Recognition

No in-app purchases

Questions

Is Spy free?
Spy is free to download, with in-app purchases available.
Is Sound Recognition free?
Sound Recognition is free to download, with no in-app purchases.
Which has better reviews, Spy or Sound Recognition?
Spy is rated higher. Spy averages 4.5 out of 5 from 1.1K ratings, while Sound Recognition averages 1.0 from 1 ratings.
Do Spy or Sound Recognition have ads?
Sound Recognition shows ads; Spy does not.
Which is updated more often, Spy or Sound Recognition?
Spy ships an update every 4 weeks, and Sound Recognition every 2 weeks. Most recently, Spy was updated on October 27, 2026 and Sound Recognition on October 7, 2026.

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