Comparison

Hidden Camera Detector vs Caffeine Rhythm

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

Head to head
About

Hidden Camera Detector

This app guides you through inspecting unfamiliar spaces for hidden cameras using visual lens detection, nearby device scanning, and magnetic field readings. It provides structured checklists and on-device reports to help you make informed judgments about suspicious devices.

Highlights
  • Visual lens detection with multiple filters
  • Nearby device scanning (Bluetooth & Wi-Fi)
  • Magnetic field scanner
  • Guided inspection checklists
  • On-device scan reports
  • Training and tips for inspection
Features
Read full description

Inspect hotels, rentals, offices, and unfamiliar rooms with one clear, guided workflow. Hidden Camera Detector combines lens-reflection tools, nearby Bluetooth and Wi‑Fi scanning, magnetic-field readings, and a room-by-room checklist. Use each signal as part of a structured inspection designed to reduce guesswork and highlight what deserves a closer look. ONE WORKFLOW. MULTIPLE SIGNALS. LENS CHECK Use the live camera view and multiple filters to make reflections and possible lens glints easier to notice. Adjust exposure, switch cameras, control the flashlight, or use Color Cycle, Brightness Ramp, and Auto Sweep for different visual conditions. NEARBY DEVICES Use Radar to review Bluetooth devices with signal-strength bars, suspicious indicators, and signal-lost detection. Scan reachable addresses on the local Wi‑Fi network, view your local IP, and identify devices worth investigating. MAGNETIC FIELD Monitor live Bx, By, and Bz readings, total field strength in microtesla, and changes over time on a rolling chart to guide a closer inspection. GUIDED ROOM CHECK Choose a Quick, Balanced, or Thorough scan. Build a checklist around your location, room size, and lighting, then work area by area with progress tracking and practical tips for common hiding places. REPORTED LOCATIONS Explore a map of publicly reported hidden-camera incidents compiled from open online sources. PRIVATE BY DESIGN Lens detection does not record or send images. Permissions are requested only when needed: - Camera: Lens check - Bluetooth: Nearby-device scan - Local Network: Wi‑Fi scan - Notifications: Optional reminders - Location: Optional map position IMPORTANT Hidden Camera Detector makes the most of your phone's camera, Bluetooth, Wi‑Fi, and sensors to help you spot signs of hidden cameras. It is a practical first step for everyday checks, but it does not replace specialized detection equipment or a professional security inspection. Download Hidden Camera Detector and inspect your next space with a clearer, more repeatable process.

About

Caffeine Rhythm

Track your caffeine intake and understand its impact on your body. This app calculates your real-time caffeine levels and predicts when you'll be able to sleep, helping you optimize your daily consumption for better rest.

Highlights
  • Real-time caffeine decay tracking
  • Personalized half-life calculation
  • Sleep safety countdown
  • Coffee shop menu integration
  • Streak tracking and gamification
  • Apple Watch app with complications
  • Home Screen and Lock Screen widgets
  • HealthKit integration
Features
Read full description

Caffeine Rhythm is your personalized caffeine tracker for iPhone and Apple Watch. It uses your unique metabolism profile to calculate your real-time caffeine level and tell you exactly when you're safe to sleep. Whether you're optimizing your morning coffee routine or making sure that afternoon espresso won't keep you up, Caffeine Rhythm gives you the insights you need to make smarter caffeine choices every day. FEATURES: • Real-time caffeine decay tracking with personalized half-life • Sleep safety countdown — know when you're safe to sleep • Coffee shop menus — Starbucks, Dunkin', McCafé, Costa, Blue Bottle, Peet's, Dutch Bros • Streak tracking and gamification • Apple Watch app with complications • Home Screen and Lock Screen widgets • HealthKit integration — caffeine intake and sleep correlation • Live Activities and Dynamic Island • Smart weekly insights powered by AI SUBSCRIPTION INFORMATION: • Free trial available — try all premium features for 7 days before subscribing • Monthly plan: $2.99/month • Yearly plan: $19.99/year (best value) • Subscription automatically renews unless cancelled at least 24 hours before the end of the current period • Payment will be charged to your Apple ID account at the confirmation of purchase • You can manage and cancel your subscriptions by going to Settings > Apple ID > Subscriptions Privacy Policy: https://hatchingpoint.com/caffeinerhythm/privacypolicy Terms of Use: https://hatchingpoint.com/caffeinerhythm/terms

Screenshots

Hidden Camera Detector4 screens
Caffeine Rhythm4 screens

Verdict

The call

The clearest difference is ads: Hidden Camera Detector at none against Caffeine Rhythm's shown. Hidden Camera Detector also leads on update cadence (every 2 days vs every 3 weeks) and monetization model (free vs freemium). On price, rating, review sentiment 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Hidden Camera Detector sells 9 in-app purchases, starting at $6.99 per 7 days and Caffeine Rhythm sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Hidden Camera Detector against 5.0 for Caffeine Rhythm. That said, the two scores are not equally well evidenced: Hidden Camera Detector has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Hidden Camera Detector ships an update every 2 days, Caffeine Rhythm every 3 weeks. The most recent releases landed on October 30, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
Hidden Camera Detector versus Caffeine Rhythm: the parameters behind the verdict, then further details
ParameterHidden Camera DetectorCaffeine Rhythm
PriceFreeFree
Rating5.0 (6 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings6 — better1
Update frequencyEvery 2 days — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS18.117.0 — better
Further details — not scored
Size66 MB23 MB
Age rating4+4+
DeveloperArtur KarachevHatching Point LLC

Customer experience

Hidden Camera Detector

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Caffeine Rhythm

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

9 purchases

Hidden Camera Detector

Subscriptions7
  • Premium (1 Week)$6.997 Days
  • Premium (1 Week)3 Days trial$6.997 Days
  • Premium (1 Month)7 Days trial$7.991 Month
Show 4 more
  • Premium (1 Month)$7.991 Month
  • Premium (1 Year)$8.991 Year
  • Premium (1 Year)$34.991 Year
  • Premium (1 Year)3 Days trial$34.991 Year
One-time2
  • Premium (Lifetime)$11.99
  • Premium (Lifetime)$44.99
2 purchases

Caffeine Rhythm

Subscriptions2
  • Monthly Premium7 Days trial$1.991 Month
  • Yearly Premium7 Days trial$9.991 Year

Questions

Is Hidden Camera Detector free?
Hidden Camera Detector is free to download, with in-app purchases available.
Is Caffeine Rhythm free?
Caffeine Rhythm is free to download, with in-app purchases available.
Which has better reviews, Hidden Camera Detector or Caffeine Rhythm?
Hidden Camera Detector and Caffeine Rhythm are both rated 5.0 out of 5 on the App Store, from 6 and 1 ratings respectively.
Do Hidden Camera Detector or Caffeine Rhythm have ads?
Caffeine Rhythm shows ads; Hidden Camera Detector does not.
Which is updated more often, Hidden Camera Detector or Caffeine Rhythm?
Hidden Camera Detector ships an update every 2 days, and Caffeine Rhythm every 3 weeks. Most recently, Hidden Camera Detector was updated on October 30, 2026 and Caffeine Rhythm on October 10, 2026.

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