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Is Cosine Safe?

Cosine privacy label · by Cosine Labs Inc · checked November 2026

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

None declared

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

Mostly a question of trust: Cosine 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 2 data types; 25% of digital wallets we checked declare tracking.

At a glance

Cosine 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

Cosine collects 1 data type tied to your identity but declares no tracking.

Try it

Did Cosine ask for something?

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

Cosine 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 Cosine'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 Cosine 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.
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 Cosine's label means for you

Cosine's label has 1 type 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.

Cosine 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 — 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.

Wallet apps hold payment details, passes or crypto keys. Financial data on the label is expected; tracking alongside it is the thing to compare. Back up recovery phrases offline for crypto wallets, and use Apple Pay where a card wallet is optional.

Among the 173 digital wallets in our snapshot with a label, 25% declare tracking, 55% collect data linked to you and 28% say they collect nothing. Cosine lists 2 data types, fewer than the average of 3.3 for this group.

Finance apps need identity and financial data to function. Expect Contact Info and Financial Info; compare apps on tracking and third-party advertising instead.

On your iPhone

Settings to check for Cosine

  1. 1

    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.

  2. 2

    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.

  3. 3

    Notifications

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

Cross-app tracking

Does Cosine track you?

No tracking declared

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

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

iOS 18 and later

Lock Cosine behind Face ID

  1. Find Cosine 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. Cosine now asks for authentication every time it opens.

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

Lock or hide Cosine: step-by-step guide →

From the App Store record

About Cosine

DeveloperCosine Labs Inc
App Store categoryFinance
Latest version1.1.13, released September 2026
First releasedNovember 2025
RequiresiOS 15.6 or later
Size77 MB
Age rating17+
Languages1 (EN)
Bundle IDcom.cosine.wallet

The current version shipped in September 2026, so the app is actively maintained and its label is likely current. Labels are updated by developers when practices change.

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 Cosine 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 Cosine's developer: If I lose my phone, how do I lock or recover the wallet?

How it compares

Cosine vs similar digital wallets

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 digital wallets → Who tracks you? A–Z → Apps that collect contact info → Privacy label decoder →

Do it now

Your Cosine 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. Q1Cosine's privacy label says it uses data to track you.
    Right.
    Not quite.

    False: there is no Data Used to Track You section on Cosine'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. Q3Cosine 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

Cosine privacy FAQ

Is Cosine safe to use?
Based on its App Store privacy label, cosine collects 1 data type 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 Cosine track you?
No. Cosine's label has no Data Used to Track You section.
What data does Cosine collect?
Contact info and diagnostics. Of these, contact info is linked to your identity.
Who makes Cosine?
Cosine Labs Inc, according to the App Store. It was first released in November 2025 and the current version is 1.1.13.
Can I lock Cosine with Face ID?
On iOS 18 or later, touch and hold Cosine'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 Cosine compare with other digital wallets?
Across 173 digital wallets with labels in our snapshot, 25% declare tracking and 28% say they collect no data. Cosine lists 2 data types against an average of 3.3.
If I lose my phone, how do I lock or recover the wallet?
The privacy label cannot answer that. Look for it in Cosine's privacy policy or support pages, linked from the App Store listing. Back up recovery phrases offline for crypto wallets, and use Apple Pay where a card wallet is optional.
How do I delete my data from Cosine?
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 Cosine on the App Store, as reported by the developer. Checked 2026-11-01. How we collect data · Report a correction