# MobileDetect vs Otpkey Authenticator

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) and iOS requirement (13.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

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.

MobileDetect ships an update every 6 weeks, Otpkey Authenticator every 2 months. The most recent releases landed on October 7, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | MobileDetect | Otpkey Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (25 ratings)](https://appshunter.io/ios/app/mobiledetect/id1088331100/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/otpkey-authenticator/id6444123920/reviews) |
| Number of ratings | **25** | 2 |
| Positive reviews | **81.8% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 224 MB | 22 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [DetectaChem, LLC](https://appshunter.io/developer/1088331099) | [Certchip Corp](https://appshunter.io/developer/1652474819) |

## What reviewers say

### MobileDetect

[App page](https://appshunter.io/ios/app/mobiledetect/id1088331100)

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:** Vision Pro support

**In-app purchases:** none


### Otpkey Authenticator

[App page](https://appshunter.io/ios/app/otpkey-authenticator/id6444123920)

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:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked 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 6 weeks, and Otpkey Authenticator every 2 months. Most recently, MobileDetect was updated on October 7, 2026 and Otpkey Authenticator on October 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*