privacyIDEA Authenticator vs Mobile Event Log
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
privacyIDEA Authenticator
This app transforms your smartphone into a secure authentication device for two-factor authentication. It seamlessly integrates with a backend system, offering a more secure rollout process than traditional tokens.
- Two-factor authentication
- OTP token support
- Secure rollout process
- Smartphone as authentication device
- REST API integration
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privacyIDEA is a modular solution for two factor authentication especially with OTP tokens. It is multi-tenency- and multi-instance-capable. Due to the modular structure privacyIDEA can be quickly and easily adapted and enhanced. E.g. adding new token types is as simple as writing a new lean python module. You do not need to modify your network for privacyIDEA, it does not write to existing databases or user stores. It only needs read access to your user stores like LDAP, Active Directory, SQL, SCIM-service or flat files. Existing workflows can be enhanced without the need to modify them. Using its simple REST like API it can be automated and smoothly be integrated. The Smartphone App "privacyIDEA Authenticator" turns your smartphone into an authentication device, which smoothlessly runs with the privacyIDEA backend. In contrast to classical smartphone based tokens the privacyIDEA Authenticator also allows for a more secure rollout process.
Mobile Event Log
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The Mobile Event Log App is part of the O2A framework and related to registry.o2a-data.de. An O2A overview can be found here: https://docs.o2a-data.de/registry/ Its functionality allows to create item events, mounts and umounts. An entry provides metadata to a scientific item operation. Details can be found here: https://docs.o2a-data.de/registry/gui/#events The app is designed to be used offline. Its target group are users who already use the online version registry.o2a-data.de and have a user account. An initial configuration and syncing the events back to https://registry.o2a-data.de/ requires to be online. Privacy Policy: https://registry.o2a-data.de/privacy Legal Notices: https://registry.o2a-data.de/legal
Screenshots
Verdict
The clearest difference is iOS requirement: Mobile Event Log at 13.0 against privacyIDEA Authenticator's 15.6. 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
privacyIDEA Authenticator ships an update every 2 months, Mobile Event Log every 6 weeks. The most recent releases landed on September 26, 2026 and October 11, 2026 respectively.
| Parameter | privacyIDEA Authenticator | Mobile Event Log |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (7 ratings) — better | — |
| Positive reviews | 42.9% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 30 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | NetKnights GmbH | Alfred-Wegener-Institut |
In-app purchases
privacyIDEA Authenticator
No in-app purchases
Mobile Event Log
No in-app purchases
Questions
Is privacyIDEA Authenticator free?
Is Mobile Event Log free?
Do privacyIDEA Authenticator or Mobile Event Log have ads?
Which is updated more often, privacyIDEA Authenticator or Mobile Event Log?
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