# mOTP - mobile OneTimePasswords > Generates time-based one-time passwords for secure two-factor authentication. (iPhone/iPad app by ise solutions.) - Source: https://appshunter.io/ios/app/motp-mobile-onetimepasswords/id318414073 (this page in markdown: same URL + `.md`) - Developer: [ise solutions](https://appshunter.io/developer/293052762) - Category: Utilities - Price: $0.99 - Rating: 2.50/5 from 11 App Store ratings · 10 written reviews indexed - Age rating: 4+ - Requires: iOS 8.0 · 1 MB - Languages: American English - Released: 2009-06-07 - Data updated: 2026-08-31 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/motp-mobile-onetimepasswords/id318414073/reviews.md ## What is mOTP? This application lets you generate One Time Passwords that are used for a more secure authentication (two-factor) - instead of having to enter a static password the iPhone plays the role as a "security token" that generates passwords that are valid only one time. The authentication mechanism is based on two factors: - the token device (i.e. mOTP-Application) and - a PIN Since the generated passwords are only valid for a very short time - it is of no use for a possible attacker. Moreover the passwords can only be generated with a hold of the PIN as well as the token device. Note: - the server you want to log onto also needs to implement the OTP-algorithm, you need to configure your "shared secret/PIN" there - the secret key is generated using random by shaking your iPhone :) - the algorithm uses MD5-hashing - compare this solution with "Mobile-OTP" Midlet solution on http://motp.sourceforge.net/- also free server components to be used e.g. as PAM can be found there. - the clocks of your iPhone and your Server have to be in sync - the algorithm can also be used for implementing a challenge-response authentication i.e. the PIN is not fixed but a random number is provided to you by the server at the login prompt. ## Key features - Generates one-time passwords - Two-factor authentication - Acts as a security token - Requires PIN and device - MD5-hashing algorithm - Challenge-response authentication ## Recent user reviews (10 of 10) All indexed reviews: https://appshunter.io/ios/app/motp-mobile-onetimepasswords/id318414073/reviews.md ### 1/5 — Doesnt work on iphone se *2019-10-12* It shows the key partly offscreen so completely useless. Total waste of money. ### 4/5 — Works but needs a copy feature *2015-09-08* The app does the job to enable logon to Draytek router VPNs... It would be a massive plus if there was an option to click on the generated password to copy it. It could then be pasted in the password field of the VPN password on the iPhone each time you connect. ### 4/5 — Great App, Reliable *2015-08-05* This app generates successful codes for a Draytek BOB and is very easy to use. Several flaws/issues with this app. 1) You can go back into setup and see the secret whenever you like and email it to anyone. This is quite a big security flaw. 2) Can't type in a secret you have to choose the one generated by this app. This is an inconvenience rather than a flaw and it's the only app that I've used that does this. 3) No countdown for when the code will expire and no automatic refresh to a new code. 4) When opening the app you must click in the PIN field, again this is an inconvenience more than a flaw. Taking these points into account, this is still a very good app which will hopefully be updated with some improvements in the future. ### 3/5 — Needs copy to clipboard function. *2014-01-30* Great app, does what it says on the tin. However as already pointed out, <10 seconds is not enough time to look at, remember, then type in a 6 character OTP correctly. It takes me numerous attempts on the phone. It needs the ability to copy and maybe a count down timer so you know how long the OTP is valid. Thanks. ### 5/5 — Great *2012-10-01* Does exactly what it says on the tin. Except don't think you've got time to generate a password and get into the settings-general-network-vpn section on your iphone, edit in your pwd and get a connection, unless you can do it in <10s. ### 5/5 — Just works *2012-07-12* Great worked first time ### 3/5 — Kein geheimes Secret *2011-07-08* Nachdem man sein Secret erzeugt hat, kann man es jederzeit wieder anschauen. Das ist eigentlich ein no go. Ansonsten wäre die app ganz ok. ### 5/5 — Super *2009-08-20* Really well done, works exactly like it should. Got the PHP interface working with it! ### 5/5 — Needs RFC 4226 Support *2009-06-16* Nicely done. It would be even better if it had an RFC 4226 compatible mode. ### 5/5 — mOTP Konzept hervorragend umgesetzt! *2009-06-07* mOTP hat das Konzept der mobilen One Time Passwörter hervorragend umgesetzt! Ich benutze es regelmäßig um mich von 'unsicheren' Rechnern oder Öffentlichen WLANs auf www.gas-tankstellen.de per 2-Wege-Authentifizierung einzuloggen! Vielen Dank!!! ## Frequently asked questions about mOTP ### What is mOTP used for? mOTP is used to generate one-time passwords (OTPs) for secure two-factor authentication. It functions as a security token, creating temporary passwords that are only valid for a short period. ### How does mOTP provide security? Security is enhanced through a two-factor authentication mechanism requiring both the mOTP application (token device) and a PIN. The generated passwords are time-sensitive, making them useless to attackers if intercepted. ### Does mOTP have ads? No, mOTP does not contain advertisements. It is a paid application that offers an ad-free experience for its users. ### What is the price of mOTP? mOTP is a paid application priced at $0.99. This one-time purchase grants access to its security features. ### What devices is mOTP compatible with? mOTP is compatible with iPhone and iPod devices. It requires iOS 4+ and is suitable for users with these Apple devices. ### How often is mOTP updated? The latest version of mOTP is 1.4, last updated on August 20, 2019. While not frequently updated, it has been stable since its last release. ### What is the user rating for mOTP? mOTP has an average rating of 2.6 stars based on 12 user ratings. This indicates a mixed reception from its user base. ### Can mOTP be used for challenge-response authentication? Yes, the algorithm used by mOTP can be adapted for challenge-response authentication. In this mode, the PIN is not fixed, and a random number is provided by the server during login. ## Version history (last 5 releases) ### 1.4 — 2019-08-20 + adjustments for iPhone X* ### 1.3 — 2017-06-12 + Adaptations for iOS10 ### 1.2 — 2015-01-11 + Fixes for iOS8 ### 1.1 — 2009-08-18 + configurable secret length (max. 32 bytes) ### 1.0 — 2009-06-07 No release notes. ## Apps similar to mOTP | App | Rating | Price | Category | | --- | --- | --- | --- | | [GREYHOUND](https://appshunter.io/ios/app/greyhound/id1610088541) | — | Free | Utilities | | [Westfalen eCharge](https://appshunter.io/ios/app/westfalen-echarge/id1378187487) | — | Free | Utilities | | [Photo Sorter - Swiper](https://appshunter.io/ios/app/photo-sorter-swiper/id6747598393) | 5.0 (15) | Free | Utilities | | [Liturgischer Kalender Immerwäh](https://appshunter.io/ios/app/liturgischer-kalender-immerwah/id1417455327) | — | Free | Utilities | | [MobiVisor Secure Exchange](https://appshunter.io/ios/app/mobivisor-secure-exchange/id1558644528) | 5.0 (1) | Free | Utilities | | [Label Maker - Print Master Pro](https://appshunter.io/ios/app/label-maker-print-master-pro/id6748546365) | 3.0 (2) | Free | Utilities | ## More apps by ise solutions - [My Daily Motivator](https://appshunter.io/ios/app/my-daily-motivator/id295863273) - [Gas Tanken (LPG-Edition)](https://appshunter.io/ios/app/gas-tanken-lpg-edition/id306898327) - [PortoCheck](https://appshunter.io/ios/app/portocheck/id323489326) - [Wetter-Warner](https://appshunter.io/ios/app/wetter-warner/id330442924) - [Gas Tanken für iPad (LPG)](https://appshunter.io/ios/app/gas-tanken-fur-ipad-lpg/id415101405) All apps by ise solutions: https://appshunter.io/developer/293052762 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*