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Is Open Authenticator by Skyost Safe?

Open Authenticator by Skyost privacy label · by Hugo Delaunay · checked November 2026

App Privacy label Developer-reported · checked November 1, 2026
Used to track you
0types

None declared

Linked to you
3types
Not linked to you
1type
Short answer

Mostly a question of trust: Open Authenticator by Skyost collects data linked to you but declares no tracking. None of it falls in Apple's most sensitive categories (health, financial, location, contacts or your own content). In total the label lists 4 data types; 36% of authenticator apps we checked declare tracking.

At a glance

Open Authenticator by Skyost privacy in one look

Data exposure on the label
Linked to you
  1. 1
  2. 2
  3. 3
  4. 4

Built only from the developer's App Store label. It describes disclosure, not tested behaviour.

Verdict from the label
Linked to you, no tracking

Open Authenticator by Skyost collects 3 data types tied to your identity but declares no tracking.

Try it

Did Open Authenticator by Skyost ask for something?

Pick the permission prompt you saw. We compare it with what Open Authenticator by Skyost's developer declared.

It asked me for access to…
Tap a prompt to compare it with the label.
Not on the label

Location is not on Open Authenticator by Skyost's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.

Not on the label

User Content is not on Open Authenticator by Skyost's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.

Not on the label

Contacts is not on Open Authenticator by Skyost's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.

Not declared on the label

Open Authenticator by Skyost declares no tracking, so a tracking prompt would contradict its label. Decline it, and consider reporting the mismatch to Apple.

Not on the label

Health & Fitness is not on Open Authenticator by Skyost's label. That can be fine: data used only on your iPhone does not have to be declared. If the data would need to leave the phone for the feature to work, ask why it is missing.

A permission is what the app can reach on your iPhone; the label is what the developer says leaves it. They answer different questions.

Line by line

What Open Authenticator by Skyost collects, explained

Data typeWhat it coversWhere to limit it
Contact InfoLinked to you Your name, email address, phone number or postal address. Use Sign in with Apple with Hide My Email where offered, and check the app's account and marketing preferences.
PurchasesLinked to you What you have bought or tend to buy. Review in-app marketing settings; subscriptions are listed in Settings › [your name] › Subscriptions.
IdentifiersLinked to you An account ID, screen name, customer number or a device-level ID such as the advertising identifier. Settings › Privacy & Security › Tracking: turn off Allow Apps to Request to Track, or tap Ask App Not to Track when prompted.
DiagnosticsNot linked to you Crash logs, launch times, hang rates and energy use. Settings › Privacy & Security › Analytics & Improvements › Share With App Developers controls what Apple passes on; the app's own crash reporting is separate.
Reading the label

What Open Authenticator by Skyost's label means for you

Open Authenticator by Skyost's label has 3 types under “Data Linked to You”, 1 type under “Data Not Linked to You”. A data type can appear in more than one section when it is used for different purposes — for example, identifiers used for both analytics and advertising.

Open Authenticator by Skyost declares no tracking, which means the developer says it does not combine your data with other companies' data for advertising or sell it to data brokers. The data linked to you — contact info, purchases and identifiers — is still tied to your identity, typically through an account, and is covered by the developer's privacy policy and retention rules.

None of the data types fall into the categories most people consider sensitive: health, financial information, precise location, contacts, browsing history or the content you create.

Authenticator apps generate the second factor for your logins. The biggest practical risk is not data collection but losing your codes when you lose your phone. Turn on encrypted backup or export your accounts, and save the recovery codes each service gave you.

Among the 173 authenticator apps in our snapshot with a label, 36% declare tracking, 45% collect data linked to you and 40% say they collect nothing. Open Authenticator by Skyost lists 4 data types, more than the average of 1.8 for this group.

Utilities range from calculators to VPNs, so their labels vary more than any other category. A simple tool that collects identifiers and usage data for tracking is a sign of advertising SDKs.

On your iPhone

Settings to check for Open Authenticator by Skyost

  1. 1

    Tracking

    Settings › Privacy & Security › Tracking. If “Allow Apps to Request to Track” is off, apps cannot ask, and they are told to treat you as having declined. You can also turn it off for this app alone.

  2. 2

    Sign-in

    When creating an account, Sign in with Apple can give the app a relay address from Hide My Email instead of your real one.

  3. 3

    Lock the app

    On iOS 18 and later, touch and hold the icon and choose Require Face ID. Anyone who picks up your unlocked phone then needs your face, fingerprint or passcode to open it.

  4. 4

    Notifications

    Settings › Notifications › Open Authenticator by Skyost › Show Previews: When Unlocked keeps message and account details off the Lock Screen.

Cross-app tracking

Does Open Authenticator by Skyost track you?

No tracking declared

There is no “Data Used to Track You” section on Open Authenticator by Skyost's label.

Does Open Authenticator by Skyost track you? Full answer and how to stop it →

iOS 18 and later

Lock Open Authenticator by Skyost behind Face ID

  1. Find Open Authenticator by Skyost on your Home Screen or in App Library.
  2. Touch and hold the icon until the quick-actions menu opens.
  3. Tap Require Face ID (or Require Touch ID / Require Passcode, depending on your iPhone).
  4. Tap Require Face ID again to confirm. Open Authenticator by Skyost now asks for authentication every time it opens.

The lock is an iPhone feature, so it works whether or not Open Authenticator by Skyost has a passcode of its own. It does not change what the app sends to its developer.

Lock or hide Open Authenticator by Skyost: step-by-step guide →

From the App Store record

About Open Authenticator by Skyost

DeveloperHugo Delaunay
App Store categoryUtilities (also Productivity)
Latest versionv2.1.0, released June 2026
First releasedJuly 2024
RequiresiOS 15.0 or later
Size56 MB
Age rating4+
Languages5 (EN, FR, DE, IT, PT)
Bundle IDapp.openauthenticator

The current version shipped in June 2026. That is recent enough that the label should reflect current practices, but check the App Store page again before relying on it.

Read with care

What the label cannot tell you

  • A label is self-reported. Apple publishes the developer's answers and can reject apps that misrepresent them, but it does not independently verify what Open Authenticator by Skyost sends.
  • It does not say where data is stored, how long it is kept, whether it is encrypted, or which companies receive it. The privacy policy covers those points.
  • Optional data counts: if a feature lets you add something (a profile photo, a phone number), the type is listed even if you never use the feature.
  • Data handled only on your iPhone is not 'collected', so a no-collection label is compatible with an app that reads your files locally.
  • Third-party sign-in, payment processors and SDKs are supposed to be included, but a label can lag behind a new version.

The question to ask Open Authenticator by Skyost's developer: If this iPhone is lost, how do I restore my codes?

How it compares

Open Authenticator by Skyost vs similar authenticator apps

Data types listed on each App Store privacy label
Tracks youLinked to youNot linkedCollects nothing

Fewer types is not automatically safer: a cloud backup app has to collect your files to work. Compare like with like.

Checking another app?

Look up any of our apps in seconds, or put two labels side by side.

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All authenticator apps → Who tracks you? A–Z → Apps that collect contact info → Privacy label decoder →

Do it now

Your Open Authenticator by Skyost privacy checklist

Tick what you have done
Tick each step as you do it on your iPhone.

Done. You have applied every control the label points to.

Quick quiz

True or false?

  1. Q1Open Authenticator by Skyost's privacy label says it uses data to track you.
    Right.
    Not quite.

    False: there is no Data Used to Track You section on Open Authenticator by Skyost's label.

  2. Q2Apple tests every app to confirm its privacy label is accurate.
    Right.
    Not quite.

    Labels are self-reported by developers. Apple can reject or remove apps that misrepresent practices, but it does not audit each label.

  3. Q3Open Authenticator by Skyost collects Contact Info.
    Right.
    Not quite.

    True: Contact Info appears on its label.

  4. Q4Data “Not Linked to You” is never sent off your iPhone.
    Right.
    Not quite.

    It is collected and sent; the developer says it is de-identified rather than tied to your account or device.

  5. Q5Tapping “Ask App Not to Track” can stop an app from working.
    Right.
    Not quite.

    Apple's rules require apps to work the same whether or not you allow tracking.

Questions people ask

Open Authenticator by Skyost privacy FAQ

Is Open Authenticator by Skyost safe to use?
Based on its App Store privacy label, open Authenticator by Skyost collects 3 data types tied to your identity but declares no tracking. Whether that is acceptable depends on what you will store in it. The label is developer-reported, not an independent security test.
Does Open Authenticator by Skyost track you?
No. Open Authenticator by Skyost's label has no Data Used to Track You section.
What data does Open Authenticator by Skyost collect?
Contact info, purchases, identifiers and diagnostics. Of these, contact info, purchases and identifiers are linked to your identity.
Who makes Open Authenticator by Skyost?
Hugo Delaunay, according to the App Store. It was first released in July 2024 and the current version is v2.1.0.
Can I lock Open Authenticator by Skyost with Face ID?
On iOS 18 or later, touch and hold Open Authenticator by Skyost's icon and choose Require Face ID (or Touch ID / Passcode). This is an iPhone feature and works for most downloaded apps, whether or not the app has its own lock.
How does Open Authenticator by Skyost compare with other authenticator apps?
Across 173 authenticator apps with labels in our snapshot, 36% declare tracking and 40% say they collect no data. Open Authenticator by Skyost lists 4 data types against an average of 1.8.
If this iPhone is lost, how do I restore my codes?
The privacy label cannot answer that. Look for it in Open Authenticator by Skyost's privacy policy or support pages, linked from the App Store listing. Turn on encrypted backup or export your accounts, and save the recovery codes each service gave you.
How do I delete my data from Open Authenticator by Skyost?
Apps that let you create an account must also let you start account deletion from inside the app (an App Store rule since June 2022). Deleting the app from your iPhone alone does not delete data already sent to the developer.
Facts on this page come from Open Authenticator by Skyost on the App Store, as reported by the developer. Checked 2026-11-01. How we collect data · Report a correction