Skip to content
StateMaps

Is 2nd Line Safe?

2nd Line privacy label · by Patel Sardarben · checked November 2026

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

None declared

Not linked to you
6types
Short answer

It depends on how you feel about tracking: 2nd Line declares data used to track you. The sensitive items are contacts and user content. In total the label lists 6 data types; 33% of contacts backup apps we checked declare tracking.

At a glance

2nd Line privacy in one look

Data exposure on the label
Used to track 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
Tracks you

2nd Line's developer reports using usage data to track you across other companies' apps and websites.

Try it

Did 2nd Line ask for something?

Pick the permission prompt you saw. We compare it with what 2nd Line'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 2nd Line'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.

Matches the label

2nd Line lists User Content on its label. Choose Limited Access and pick only the photos you want to share.

Matches the label

2nd Line lists Contacts on its label. Limited Access shares selected contacts instead of your whole address book.

Expected — and you can decline

2nd Line declares data used to track you, so expect the “Allow to track?” prompt. Tap Ask App Not to Track; the app must keep working without it.

Not on the label

Health & Fitness is not on 2nd Line'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 2nd Line collects, explained

Data typeWhat it coversWhere to limit it
ContactsSensitiveNot linked to you The people in your address book or social graph. Settings › Privacy & Security › Contacts: choose Limited Access to share only selected people, or None.
User ContentSensitiveNot linked to you Messages, photos, videos, audio recordings, documents and support chats you create or upload. Settings › Privacy & Security › Photos: choose Limited Access or None; review Microphone and Files access too.
PurchasesNot linked to you What you have bought or tend to buy. Review in-app marketing settings; subscriptions are listed in Settings › [your name] › Subscriptions.
IdentifiersNot linked 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.
Usage DataUsed to track youNot 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.
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 2nd Line's label means for you

2nd Line's label has 1 type under “Data Used to Track You”, 6 types 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.

Tracking is the declaration that most separates apps. It means usage data from 2nd Line can be combined with data from other companies to target or measure ads, or shared with data brokers. On iOS 14.5 and later, the app must ask your permission before tracking you through the advertising identifier; answering “Ask App Not to Track” blocks that identifier and tells the developer you have declined.

The items that deserve the most attention are contacts and user content. Uploading contacts shares other people's details, not just yours.

Contacts backup apps upload your whole address book — other people's names, numbers and addresses, not just yours. Check where the backup is stored, whether it is encrypted, and how to delete it from the server.

Among the 126 contacts backup apps in our snapshot with a label, 33% declare tracking, 48% collect data linked to you and 33% say they collect nothing. 2nd Line lists 6 data types, more than the average of 2.2 for this group.

Business apps often handle other people's data — clients, colleagues and customers — so what they collect can affect more than you.

On your iPhone

Settings to check for 2nd Line

  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

    Photos

    Settings › Privacy & Security › Photos. Limited Access lets you pick exactly which pictures the app can see; Add Photos Only lets it save without reading your library.

  3. 3

    Contacts

    Settings › Privacy & Security › Contacts. Limited Access shares only the people you select instead of your whole address book.

  4. 4

    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.

  5. 5

    Notifications

    Settings › Notifications › 2nd Line › Show Previews: When Unlocked keeps message and account details off the Lock Screen.

Cross-app tracking

Does 2nd Line track you?

Yes — 1 data type

Usage data. Apple defines tracking as linking data from this app with data from other companies' apps, websites or offline sources for targeted advertising or ad measurement, or sharing it with a data broker.

Does 2nd Line track you? Full answer and how to stop it →

iOS 18 and later

Lock 2nd Line behind Face ID

  1. Find 2nd Line 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. 2nd Line now asks for authentication every time it opens.

The lock is an iPhone feature, so it works whether or not 2nd Line has a passcode of its own. It does not change what the app sends to its developer.

From the App Store record

About 2nd Line

DeveloperPatel Sardarben
App Store categoryBusiness (also Productivity)
Latest version4.9.3, released August 2026
First releasedDecember 2019
RequiresiOS 13.0 or later
Size139 MB
Age rating4+
Languages1 (EN)
Bundle IDcom.second.phonenumber

The current version shipped in August 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 2nd Line 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 2nd Line's developer: How do I delete my contacts from their server later?

How it compares

2nd Line vs similar contacts backup 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.

App privacy checkerCompare two appsBrowse 4,500 apps
Keep exploring

Apps similar to 2nd Line

Contacts by Company
Linked2 types
GContact
Collects nothing
ContactEasy-address Book help
Collects nothing
SA Contacts Lite
Tracks you3 types
A2Z Groups
Not linked2 types
SA Contacts
Not linked2 types
Contacts Master:Clean & Export
Collects nothing
Contact[s] 2
Collects nothing

All contacts backup apps → Who tracks you? A–Z → Apps that collect contacts → Privacy label decoder →

Do it now

Your 2nd Line 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. Q12nd Line's privacy label says it uses data to track you.
    Right.
    Not quite.

    True: it lists usage data under Data Used to Track You.

  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. Q32nd Line collects Contacts.
    Right.
    Not quite.

    True: Contacts 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

2nd Line privacy FAQ

Is 2nd Line safe to use?
Based on its App Store privacy label, 2nd Line's developer reports using usage data to track you across other companies' apps and websites. Whether that is acceptable depends on what you will store in it. The label is developer-reported, not an independent security test.
Does 2nd Line track you?
Yes. Its label lists usage data under Data Used to Track You. You can decline at the iOS tracking prompt.
What data does 2nd Line collect?
Contacts, user content, purchases, identifiers, usage data and diagnostics. Of these, usage data is linked to your identity.
Who makes 2nd Line?
Patel Sardarben, according to the App Store. It was first released in December 2019 and the current version is 4.9.3.
Can I lock 2nd Line with Face ID?
On iOS 18 or later, touch and hold 2nd Line'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. If you don't see the option, update iOS.
How does 2nd Line compare with other contacts backup apps?
Across 126 contacts backup apps with labels in our snapshot, 33% declare tracking and 33% say they collect no data. 2nd Line lists 6 data types against an average of 2.2.
How do I delete my contacts from their server later?
The privacy label cannot answer that. Look for it in 2nd Line's privacy policy or support pages, linked from the App Store listing. Check where the backup is stored, whether it is encrypted, and how to delete it from the server.
How do I delete my data from 2nd Line?
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 2nd Line on the App Store, as reported by the developer. Checked 2026-11-01. How we collect data · Report a correction