Comparison

KeyBell vs Hidden Device Radar

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

Head to head
About

KeyBell

Monitor your home or office premises remotely with IP cameras. This free application allows for remote configuration and other useful functions to keep your property secure.

Highlights
  • Remote IP camera monitoring
  • Home and office premise surveillance
  • Remote configuration
  • Security monitoring
Read full description

KeyBell enables customers to monitor home / office premises where the IP Camera is installed. This free app offers many other useful functions such as: remote configuration.

About

Hidden Device Radar

Detect hidden cameras, trackers, and smart devices using Bluetooth, Wi-Fi, and NFC signals. Get real-time threat scoring and a proximity graph to locate suspicious devices. Protect your privacy by scanning hotel rooms, rentals, or your home.

Highlights
  • Bluetooth device detection
  • Wi-Fi/local network scanning
  • Real-time threat scoring
  • Signal Strength Finder (Pro)
  • Detection history
  • On-device processing
Features
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Worried someone is watching or following you? Hidden Device Radar helps you find hidden cameras, trackers, and unknown smart devices — right from your iPhone. Whether you're checking a hotel room, a short-term rental, an office, a car, or your own home, Hidden Device Radar gives you a fast, private way to spot devices that may be recording or tracking you. WHAT IT DETECTS • Bluetooth devices — trackers (AirTag, Tile, SmartTag, Chipolo), cameras, speakers, wearables, and other IoT gadgets • Wi-Fi / local network devices — IP cameras, baby monitors, NVRs, doorbells, and smart-home hardware • Unknown trackers that may be traveling with you • NFC tags — tap to identify a chip hidden in an object (on supported iPhones) KEY FEATURES • Real-time threat scoring — every device is flagged as Info, Suspicious, Elevated, or Critical • Signal Strength Finder — a "warmer / colder" proximity graph that helps you physically locate a device (Pro) • Scan modes for a quick sweep, a single room, or a whole floor • Detailed device fingerprints and manufacturer identification • Detection history so you can tell what's new versus what's always there • 100% on-device — your scans never leave your iPhone. No account, no tracking, no ads. HIDDEN DEVICE RADAR PRO Unlock everything with a one-time purchase: • Signal Strength Finder • NFC Tap-to-Identify • Full threat analysis and guidance • Unlimited detection history • AI Trend Insight HONEST ABOUT LIMITATIONS Hidden Device Radar detects devices that broadcast Bluetooth, Wi-Fi, or NFC signals. Bluetooth, Wi-Fi, and NFC advertisements are unauthenticated, so results are strong investigative leads — not legal proof of a device's identity or intent. The app cannot detect devices that are powered off, purely analog/wired, or that broadcast no signal. PRIVACY FIRST Everything runs locally on your device. We don't collect, upload, or sell your data. There are no accounts and no ads. Use Hidden Device Radar to check your own spaces and protect your own privacy. Always follow the laws in your area.

Screenshots

KeyBell3 screens
Hidden Device Radar4 screens

Verdict

The call

The clearest difference is rating: Hidden Device Radar at 5.0 against KeyBell's 1.8. Hidden Device Radar also leads on update cadence (every 2 weeks vs every 5 months). KeyBell's advantage is in-app purchases (none vs 1) and ratings volume (13 vs 1). On price, ads 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

Both are free to download. Hidden Device Radar sells 1 one-off in-app purchase. KeyBell asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Hidden Device Radar holds the better App Store score, 5.0 against 1.8. That said, the two scores are not equally well evidenced: KeyBell has 13 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

KeyBell ships an update every 5 months, Hidden Device Radar every 2 weeks. The most recent releases landed on October 20, 2026 and October 7, 2026 respectively.

Scorecard6 real differences · 4 level
KeyBell versus Hidden Device Radar: the parameters behind the verdict, then further details
ParameterKeyBellHidden Device Radar
PriceFreeFree
Rating1.8 (13 ratings)5.0 (1 ratings) — better
Positive reviews20.0% of reviews—
Number of ratings13 — better1
Update frequencyEvery 5 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS9.0 — better17.0
Further details — not scored
Size16 MB8 MB
Age rating4+4+
Developer瑶 朱Aurem Digital llc

Customer experience

KeyBell

All ratings13 ratings
Positive15.4%
Neutral7.7%
Negative76.9%
Written reviews5 reviews
Positive20.0%
Neutral0.0%
Negative80.0%

Hidden Device Radar

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

KeyBell

No in-app purchases

1 purchases

Hidden Device Radar

One-time1
  • Hidden Device Radar$4.99

Questions

Is KeyBell free?
KeyBell is free to download, with no in-app purchases.
Is Hidden Device Radar free?
Hidden Device Radar is free to download, with in-app purchases available.
Which has better reviews, KeyBell or Hidden Device Radar?
Hidden Device Radar is rated higher. KeyBell averages 1.8 out of 5 from 13 ratings, while Hidden Device Radar averages 5.0 from 1 ratings.
Do KeyBell or Hidden Device Radar have ads?
Neither KeyBell nor Hidden Device Radar shows ads.
Which is updated more often, KeyBell or Hidden Device Radar?
KeyBell ships an update every 5 months, and Hidden Device Radar every 2 weeks. Most recently, KeyBell was updated on October 20, 2026 and Hidden Device Radar on October 7, 2026.

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