FreeOTP Authenticator vs One
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FreeOTP Authenticator
Generate one-time passwords for enhanced online account security. This app creates temporary codes that, when used with your regular password, significantly strengthen your login protection. It functions even without an internet connection.
- Generates one-time passwords
- Works offline (airplane mode)
- Supports Google, Facebook, GitHub, etc.
- Compatible with TOTP/HOTP protocols
- Open source software
Read full descriptionHide full description
FreeOTP adds a second layer of security for your online accounts. This works by generating one-time passwords on your mobile devices which can be used in conjunction with your normal password to make your login nearly impossible to hack. These passwords can be generated even when your phone is in airplane mode. FreeOTP works with many of the great online services you already use, including Google, Facebook, Evernote, GitHub and many more! FreeOTP also may work for your private corporate security if they implement the standardized TOTP or HOTP protocols. This includes great enterprise solutions like FreeIPA. FreeOTP is open source and free software! Licensed under the Apache 2.0 license, you can obtain the source code for FreeOTP at https://fedorahosted.org/freeotp for review or modification. Contributions are welcome!
One
This utility generates a secure, eight-digit disposable password every minute. These one-time passwords are ideal for enhancing security across various online services, as they become invalid after a short period, even if compromised.
- Generates eight-digit passwords
- Passwords valid for one minute
- Enhances online service security
- Disposable password functionality
- Requires OTP application at service
Read full descriptionHide full description
What is One-Time Password? One-Time Password is the disposable password which is effective solely once. In this Application, a random eight digit password is generated every one minute. You can securely use the various kinds of services because the password is invalidated in one minute even if the password is stolen. For using this App, it is required to apply for the OTP at the service which adopted this App. As applying for the OTP, the email notification about the App procedure will be delivered at the email address registered.
Screenshots
Verdict
The clearest difference is review sentiment: FreeOTP Authenticator at 37% against One's 13%. FreeOTP Authenticator also leads on iOS requirement (11.0 vs 14.0). 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.
FreeOTP Authenticator ships an update every 6 months, One every 5 months. The most recent releases landed on September 23, 2026 and September 4, 2026 respectively.
| Parameter | FreeOTP Authenticator | One |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (173 ratings) — better | — |
| Positive reviews | 37.0% of reviews — better | 12.5% of reviews |
| Number of ratings | 173 — better | — |
| Update frequency | Every 6 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 11 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Red Hat | NTT DATA GROUP CORPORATION |
Customer experience
FreeOTP Authenticator
One
Bugs and requests
FreeOTP Authenticator
Reported bugs
3 issues- Camera not working for QR code scanning
- App crashing on launch or when unlocking accounts
- UI issues on larger iOS devices
Requested features
4 requests- Add ability to manually enter account details
- Implement iCloud/cloud backup sync
- Allow renaming and deleting of accounts
- Provide Apple Watch support
One
Not enough reviews yet to summarise bugs or requests.
In-app purchases
FreeOTP Authenticator
No in-app purchases
One
No in-app purchases
Questions
Is FreeOTP Authenticator free?
Is One free?
Do FreeOTP Authenticator or One have ads?
Which is updated more often, FreeOTP Authenticator or One?
Other comparisons
