Comparison

MobileDetect vs Otpkey Authenticator

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

Head to head
About

MobileDetect

This app transforms your smartphone into a presumptive drug detection tool using specialized test pouches. It offers automated results in seconds for a wide range of substances, with features for report creation and sharing.

Highlights
  • Automated drug detection
  • Detects multiple substances
  • Non-visible residue testing
  • Test reports with GPS and images
  • Instant report sharing
  • Tutorial mode and training videos
Features
Read full description

MobileDetect Brings Automated Drug Detection to the Masses The revolutionary MobileDetect app converts your smartphone or tablet into a portable, presumptive drug detection tool. The app works with MobileDetect drug pouches which are innovative, highly accurate, low-cost test kits that use recognized National Institute of Justice chemical reagents to produce color reactions specific to different drugs. Substances Detected: • Fentanyl, Heroin, Cocaine, Methamphetamine • CBD and THC - Hemp, Marijuana, Vape, Edibles, Oils, more • Synthetics – K2, K3, Spice, Bath Salts, etc • Oxycodone and other over the counter substances • GHB, PCP, LSD and Mushrooms • Gunshot Residue Ultra-Simple and Safe Testing: 1. Simply remove the test swab from the MobileDetect pouch 2. Test the substance or area of interest with swab 3. Insert the swab back into the pouch 4. Break the chemical reagents in the pouch 5. Wait for the color reaction 6. Scan the pouch QR code with the MobileDetect app for automated results Features: • Automated detection results in seconds • Detect multiple drugs in one test pouch • Non-visible residue and bulk testing • Create test reports with GPS mapping, images, notes, time, date and more • Instantly share created test reports via email or text • Tutorial mode and HD training videos DetectaChem is constantly expanding MobileDetect Pouch offerings to keep up with the evolving detection needs. Visit www.DetectaChem.com for a full list of MobileDetect pouch offerings. For the first time ever, Raman chemical identification technology is now available on smart devices***, only with the MobileDetect App! THE APEX R7 RAMAN SPECTROMETER: - Unbeatable 24,000 substance library - Most affordable identification device available - Get accurate results in seconds - Absolutely no scan limits - Analysis and reporting on the MobileDetect App Welcome to effortless identification. *Requires MobileDetect Pouches for Automated Detection **Results obtained from the Mobile Detect system are presumptive only. *** Requires the APEX R7 Raman Spectrometer

About

Otpkey Authenticator

Enhance your online security with multi-factor authentication. This app generates one-time passwords for various services, even offline, and supports standard TOTP/HOTP protocols. It offers features like QR code scanning, auto-hiding codes, and biometric authentication.

Highlights
  • Multi-factor authentication
  • Offline OTP generation
  • QR code scanning and export
  • Biometric authentication support
  • Clipboard code copying
  • Widget and Watch App support
Features
Read full description

Otpkey Authenticator generates one-time passwords for two-factor authentication on iPhone, iPad, Mac and Apple Watch, and keeps them in sync through iCloud Keychain. It works completely offline. No account, no server: your secrets stay in the system Keychain on your devices, protected by your passcode, Face ID or Touch ID. Otpkey Authenticator works with every service that supports standard TOTP or HOTP codes, including Google, Microsoft, Amazon, GitHub, Facebook, X, Dropbox, Discord, PayPal, AWS, Synology and many more. Switching from Google Authenticator? Scan its "Export accounts" QR code and all of your accounts are imported at once. Features ======= - Available for iPhone, iPad, Mac and Apple Watch, synced through iCloud Keychain - Folders and search to organize many accounts - Scan QR codes to add accounts - Import all accounts from a Google Authenticator export QR code - Export any account as a QR code - Encrypted, password-protected backup and restore (PEM file format) - Face ID / Touch ID lock - Hide codes on screen, copy with one tap - Custom account icons - iOS: Home Screen widgets (small, medium and large) - iOS: Apple Watch app with complication - macOS: Lives in the menu bar, always one click away - macOS: Scan QR codes straight from the screen - macOS: Launch at login, auto hide - macOS: Drag and drop Specifications =========== - Type: Time-based (TOTP), Counter-based (HOTP) - Algorithm: SHA-1, SHA-256, SHA-512 - Digits: 6, 8, 10 - Period: 30, 60 seconds Standards ======= TOTP - Time-based One-Time Password Algorithm (RFC 6238) HOTP - HMAC-Based One-Time Password Algorithm (RFC 4226)

Screenshots

MobileDetect4 screens
Otpkey Authenticator4 screens

Verdict

The call

The clearest difference is rating: MobileDetect at 4.4 against Otpkey Authenticator's 1.0. MobileDetect also leads on review sentiment (82% vs 50%) and ratings volume (25 vs 2). Otpkey Authenticator's advantage is device support (5 vs 3). On price, update cadence, ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

MobileDetect holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: MobileDetect has 25 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 82% of MobileDetect's written reviews are positive against 50% of Otpkey Authenticator's.

UpkeepUpdate frequency

MobileDetect ships an update every 5 weeks, Otpkey Authenticator every 2 months. The most recent releases landed on August 14, 2026 and October 2, 2026 respectively.

Scorecard4 real differences · 6 level
MobileDetect versus Otpkey Authenticator: the parameters behind the verdict, then further details
ParameterMobileDetectOtpkey Authenticator
PriceFreeFree
Rating4.4 (25 ratings) — better1.0 (2 ratings)
Positive reviews81.8% of reviews — better50.0% of reviews
Number of ratings25 — better2
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac, Apple Watch — better
Requires iOS12.0 — better13.0
Further details — not scored
Size206 MB22 MB
Age rating17+4+
DeveloperDetectaChem, LLCCertchip Corp

Customer experience

MobileDetect

All ratings25 ratings
Positive84.0%
Neutral0.0%
Negative16.0%
Written reviews11 reviews
Positive81.8%
Neutral0.0%
Negative18.2%

Otpkey Authenticator

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

MobileDetect

No in-app purchases

None

Otpkey Authenticator

No in-app purchases

Questions

Is MobileDetect free?
MobileDetect is free to download, with no in-app purchases.
Is Otpkey Authenticator free?
Otpkey Authenticator is free to download, with no in-app purchases.
Which has better reviews, MobileDetect or Otpkey Authenticator?
MobileDetect is rated higher. MobileDetect averages 4.4 out of 5 from 25 ratings, while Otpkey Authenticator averages 1.0 from 2 ratings.
Do MobileDetect or Otpkey Authenticator have ads?
Neither MobileDetect nor Otpkey Authenticator shows ads.
Which is updated more often, MobileDetect or Otpkey Authenticator?
MobileDetect ships an update every 5 weeks, and Otpkey Authenticator every 2 months. Most recently, MobileDetect was updated on August 14, 2026 and Otpkey Authenticator on October 2, 2026.

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