Cybersecurity · head to head
Authy vs Cisco Duo
Authy
Cybersecurity
Twilio's free authenticator app with encrypted cloud backup, mobile only since the desktop clients were withdrawn in 2024.
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Authy there is no export function for stored TOTP secrets, so moving to a different authenticator means disabling and re-enrolling two-factor authentication on every account individually, which is the reason most users stay rather than a reason anyone should choose it.; Cisco Duo free tier limited to 10 users maximum
- Prices and features above were last checked on 30 August 2026.
Where they differ
Only the attributes on which Authy and Cisco Duo actually diverge.
Identical on both: starting price (Free), free tier (Yes), platforms (Web), user rating (Not yet rated), category (Cybersecurity).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Authy
- Encrypted cloud backup
- Multi-device sync
- Standard TOTP
- Offline code generation
- App lock
- Multi-device toggle
- Token organisation
- Free with no account tier
Only in Cisco Duo
Nothing recorded that Authy does not also cover.
What people use each for
The jobs each tool is most often brought in to do.
Authy
- An individual who wants two-factor authentication on personal accounts and needs it to survive losing or replacing a phonenot Cisco Duo
- A small team sharing access to a service account where the same tokens must be available on more than one handsetnot Cisco Duo
- Replacing SMS-based codes with TOTP for someone who would abandon two-factor entirely if recovery were difficultnot Cisco Duo
- Consolidating tokens scattered across several apps onto one device list with recognisable names and iconsnot Cisco Duo
Cisco Duo
- Eliminating phishing with passwordless authnot Authy
- Implementing zero trust with device trustnot Authy
- Protecting sessions from hijacking and theftnot Authy
- Managing compliance for regulated industriesnot Authy
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Authy
- There is no export function for stored TOTP secrets, so moving to a different authenticator means disabling and re-enrolling two-factor authentication on every account individually, which is the reason most users stay rather than a reason anyone should choose it.
- The Windows, macOS and Linux desktop applications were discontinued in 2024 and stopped working, so any workflow that depended on copying codes on a computer now requires a phone in hand, and users who held tokens only on a desktop client had to restore from backup or re-enrol.
- The account is keyed to a phone number, so an attacker who takes over that number through a SIM swap can begin the device registration flow, and the only remaining control is the backup password that most users set once and cannot recall.
- In 2024 an unauthenticated Twilio endpoint allowed attackers to confirm which numbers from a supplied list were registered Authy accounts, exposing around 33 million phone numbers, which disclosed no codes but handed phishers a validated list of people known to use two-factor authentication.
- It is a free consumer application inside a company that has already retired the paid Authy developer API it once supported, so it carries no revenue of its own, and users should treat its continued existence as a business decision rather than a roadmap commitment.
Cisco Duo
- Free tier limited to 10 users maximum
- Licenses must be purchased in 10-user increments (under 100 users) or 25-user increments (100+ users)
- Pricing is per-user per-month with minimum purchase increments
Pricing, plan by plan
Authy
FreeNo published plan breakdown. See the Authy review.
Cisco Duo
Free- FreeFree
- Multi-factor authentication (MFA)
- Seamless integrations
- Authenticator app
- Essentials$3/month
- All Free features
- Duo Directory
- Phishing-resistant MFA
- Advantage$6/month
- All Essentials features
- Identity intelligence
- Cisco Identity Intelligence (ISPM, ITDR)
- Premier$9/month
- All Advantage features
- Complete device trust
- VPN-less remote access
Which should you pick?
Choose Authy if
- You need encrypted cloud backup.
- You want to start without paying.
- You also want multi-device sync.
Questions people ask
- Is Authy or Cisco Duo better?
- Neither clearly leads. Authy starts at Free and Cisco Duo at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Authy or Cisco Duo?
- Authy starts at Free and Cisco Duo at Free.
- Does Authy or Cisco Duo run on more platforms?
- Both run on Web, so platform support will not decide this one for you.
- Can I use Authy for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Authy best used for?
- Authy is most often used for an individual who wants two-factor authentication on personal accounts and needs it to survive losing or replacing a phone, a small team sharing access to a service account where the same tokens must be available on more than one handset, replacing sms-based codes with totp for someone who would abandon two-factor entirely if recovery were difficult, consolidating tokens scattered across several apps onto one device list with recognisable names and icons. Of those, an individual who wants two-factor authentication on personal accounts and needs it to survive losing or replacing a phone and a small team sharing access to a service account where the same tokens must be available on more than one handset are not what Cisco Duo is typically brought in for.
- What can Authy do that Cisco Duo cannot?
- Authy covers Encrypted cloud backup, Multi-device sync, Standard TOTP, Offline code generation.
Answered from the vendors’ own pages
Authy: Is Authy still supported?
The mobile apps for iOS and Android are still available and functional. The desktop applications were withdrawn in 2024 and the Authy developer API has been retired in favour of Twilio Verify, so the surrounding product has been shrinking.
Cisco Duo: How much does Cisco Duo cost?
Cisco Duo Free is $0/user/month (up to 10 users). Paid plans start at $3/user/month (Essentials), $6/user/month (Advantage), and $9/user/month (Premier). Billing is per-user per-month.
SourceAuthy: Can I export my tokens?
No. There is no export of the underlying secrets, by design. Migrating to another authenticator means going to each service, disabling two-factor authentication and setting it up again with the new app.
Cisco Duo: Is Cisco Duo free to try?
Yes, Duo Free offers multi-factor authentication and seamless integrations at $0/user/month for up to 10 users.
SourceAuthy: What happened to the desktop app?
Twilio announced its discontinuation in March 2024 and the applications stopped working later that year. There is no replacement desktop client; the mobile apps are the product now.
Cisco Duo: What is the minimum purchase for Cisco Duo?
Organizations must buy licenses in 10-user increments for under 100 users, or 25-user increments for 100 or more users. Plans are modifiable at any time.
SourceAuthy: Is multi-device sync safe to leave on?
It is the feature most worth understanding. Leaving new device registration enabled means anyone who controls your phone number can attempt to add a device. The usual advice is to turn the multi-device setting off once your devices are registered and turn it on only when you need to add one.
Cisco Duo: What does the Advantage plan add over Essentials?
Advantage ($6/user/month) adds identity intelligence, Cisco Identity Intelligence (ISPM, ITDR), Duo Passport, session theft protection, Active Directory Defense, and risk-based authentication.
SourceAuthy: What if I lose my phone and forget the backup password?
The secrets are encrypted with that password and Twilio does not hold it, so they cannot be recovered. You would fall back to each individual service's account recovery process, which is exactly the situation the backup was meant to avoid.
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