imOTP vs OETH OnPremise
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
imOTP
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imOTP is a free one-time password (OTP) client implementation. The OTP solution provides strong authentication based on time synchronous one-time passwords and consists of a client component (this application) and a server component (available on http://motp.sourceforge.net). imOTP features: -) Supports multiple accounts based on profiles -) Supports strict 4-digit pins a well as longer alphanumeric pins -) Supports taking the generated password into the clipboard -) Displays the current epoch time
OETH OnPremise
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OETH Identity now on premise. The OETH OnPremise App, in conjunction with the OETH Identity OnPremise, simplifies strong authentication for enterprises, enhancing the passwordless SSO experience. Key features: - Scan QR code to enable passwordless authentication. - Passwordless authentication methods support biometric or patternlock. - Activate passwordless authentication by scanning a QR code or receiving a push notification. - Authentication is certified by FIDO Alliance. To activate OETH Identity OnPremise, please contact OETH customer support.
Screenshots
Verdict
The clearest difference is update cadence: OETH OnPremise at every 3 months against imOTP's every 8 months. imOTP's advantage is iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
imOTP ships an update every 8 months, OETH OnPremise every 3 months. The most recent releases landed on October 10, 2026 and October 9, 2026 respectively.
| Parameter | imOTP | OETH OnPremise |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 20 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Johann Marinits | WebComm Technology Co., Ltd. |
In-app purchases
imOTP
No in-app purchases
OETH OnPremise
No in-app purchases









