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Is C2 Password Safe?

C2 Password privacy label · by Synology Inc. · checked November 2026

  • Nothing linked to you
App Privacy label Developer-reported · checked November 1, 2026
Used to track you
0types

None declared

Linked to you
0types

None declared

Not linked to you
1type
Short answer

On the label it is low-risk: C2 Password collects some data but says none of it is linked to you or used for tracking. None of it falls in Apple's most sensitive categories (health, financial, location, contacts or your own content). In total the label lists 1 data type; 18% of password managers we checked declare tracking.

At a glance

C2 Password privacy in one look

Data exposure on the label
Not 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
Not linked to you

C2 Password collects some data but says none of it is linked to your identity, and none is used for tracking.

Try it

Did C2 Password ask for something?

Pick the permission prompt you saw. We compare it with what C2 Password'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 C2 Password'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 C2 Password'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 C2 Password'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

C2 Password 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 C2 Password'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 C2 Password collects, explained

Data typeWhat it coversWhere to limit it
Usage DataNot linked to you What you tap, open and view inside the app, plus which ads you have seen. There is no single iOS switch. Look for an analytics or personalised-ads toggle in the app's own settings.
Reading the label

What C2 Password's label means for you

C2 Password's label has 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.

Every type on C2 Password's label is in the “not linked” section, so the developer says the data is stripped of anything that identifies you before it is used. That is typical of anonymous analytics and crash reporting. Not linked is still collected: the data leaves your phone.

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.

A password manager holds the keys to every other account. Data collection on the label should be limited to what syncing and billing need, and your vault should be end-to-end encrypted. Look for zero-knowledge or end-to-end encryption in the developer's documentation, and set up account recovery before you migrate passwords.

Among the 157 password managers in our snapshot with a label, 18% declare tracking, 33% collect data linked to you and 46% say they collect nothing. C2 Password lists 1 data type, about the same as the average of 1.5 for this group.

Productivity apps tend to collect the work you do in them — documents, notes and files — so User Content is common. The question is whether it syncs to the developer's servers and how it is protected there.

On your iPhone

Settings to check for C2 Password

  1. 1

    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.

  2. 2

    Notifications

    Settings › Notifications › C2 Password › Show Previews: When Unlocked keeps message and account details off the Lock Screen.

Cross-app tracking

Does C2 Password track you?

No tracking declared

There is no “Data Used to Track You” section on C2 Password's label.

Does C2 Password track you? Full answer and how to stop it →

iOS 18 and later

Lock C2 Password behind Face ID

  1. Find C2 Password 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. C2 Password now asks for authentication every time it opens.

The lock is an iPhone feature, so it works whether or not C2 Password has a passcode of its own. It does not change what the app sends to its developer.

Lock or hide C2 Password: step-by-step guide →

From the App Store record

About C2 Password

DeveloperSynology Inc.
App Store categoryProductivity (also Utilities)
Latest version3.0.0, released June 2026
First releasedJanuary 2022
RequiresiOS 15.2 or later
Size28 MB
Age rating4+
Languages9 (EN, FR, DE, IT, JA, KO, RU, ES…)
Bundle IDcom.synology.c2.password

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.

Also by Synology Inc.: Synology Photos.

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 C2 Password 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 C2 Password's developer: Can the developer read my vault, or only I can?

How it compares

C2 Password vs similar password managers

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 password managers → Who tracks you? A–Z → Apps that collect usage data → Privacy label decoder →

Do it now

Your C2 Password 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. Q1C2 Password's privacy label says it uses data to track you.
    Right.
    Not quite.

    False: there is no Data Used to Track You section on C2 Password'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. Q3C2 Password collects Usage Data.
    Right.
    Not quite.

    True: Usage Data appears on its label, in the Not Linked to You section.

  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

C2 Password privacy FAQ

Is C2 Password safe to use?
Based on its App Store privacy label, c2 Password collects some data but says none of it is linked to your identity, and none is used for tracking. Whether that is acceptable depends on what you will store in it. The label is developer-reported, not an independent security test.
Does C2 Password track you?
No. C2 Password's label has no Data Used to Track You section.
What data does C2 Password collect?
Usage data. None of it is linked to your identity.
Who makes C2 Password?
Synology Inc., according to the App Store. It was first released in January 2022 and the current version is 3.0.0.
Can I lock C2 Password with Face ID?
On iOS 18 or later, touch and hold C2 Password'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 C2 Password compare with other password managers?
Across 157 password managers with labels in our snapshot, 18% declare tracking and 46% say they collect no data. C2 Password lists 1 data type against an average of 1.5.
Can the developer read my vault, or only I can?
The privacy label cannot answer that. Look for it in C2 Password's privacy policy or support pages, linked from the App Store listing. Look for zero-knowledge or end-to-end encryption in the developer's documentation, and set up account recovery before you migrate passwords.
How do I delete my data from C2 Password?
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 C2 Password on the App Store, as reported by the developer. Checked 2026-11-01. How we collect data · Report a correction