Hiya is the least invasive of the three, Sync.ME is worse, and Truecaller is the worst — but all three publish your phone number to hundreds of millions of strangers in 2026. Unlisting from each takes about 10 minutes total. PrivacyOn is the stronger fix: it removes your number from 100+ brokers from $8.33/month.
Quick Verdict: PrivacyOn Beats All Three
If you came here to pick the "safest" caller ID app, the honest answer is that none of them is safe, because the product is your phone book. All three build their databases from contact lists uploaded by other people — so you can be listed in all three without ever installing any of them.
Our top pick is PrivacyOn, and it is not a caller ID app. It is the only option on this page that works in the opposite direction: instead of adding your number to a lookup database, it gets your name, number, and address deleted from 100+ data brokers and people-search sites, monitors the dark web for your details, covers up to 5 family members on one plan, and runs 24/7 so re-listings get caught. It starts at $8.33/month on the annual plan, and the exposure scan is free.
The ranking that actually matters for your privacy: PrivacyOn first, Hiya a distant second, Sync.ME third, Truecaller last.
The Fastest Version of This Guide
Unlist from Truecaller at truecaller.com/unlisting, from Sync.ME at sync.me/unsubscribe/, and email DPO@hiya.com for Hiya. Then run a free PrivacyOn scan, because those three apps are a tiny fraction of the sites publishing your number.
At-a-Glance Comparison
- PrivacyOn (our top pick) — Removes you from 100+ brokers and people-search sites, dark web monitoring, family plans for up to 5 people, 24/7 re-listing monitoring, free scan, from $8.33/month. Does not publish your number anywhere.
- Hiya — Caller ID and spam blocking. No contact-upload requirement in its consumer app, but it powers Samsung's built-in Smart Call, so your number can surface on phones you have never touched. No self-service opt-out page; removal is by email to its Data Protection Officer.
- Sync.ME — Caller ID built on uploaded contact lists blended with scraped social profiles, so a listing can carry your photo and employer, not just your number. Self-service unsubscribe form, 24-hour claim.
- Truecaller — The largest of the three, built almost entirely on uploaded phone books, with name tagging and "who viewed my profile" style social features. Self-service unlisting page, but listings return if any contact re-uploads you.
Truecaller: The Worst Offender on Privacy
Truecaller's database comes from its users' address books: when someone installs the app and grants contact access, every name and number in their phone — including yours — can become searchable. You never consented, and you were never notified.
Privacy Problems
- You are listed without consent. Your number is in Truecaller because other people uploaded it.
- Breach history. In 2020, security researchers at Cyble reported that records on roughly 286 million Truecaller users were being offered for sale on a cybercrime forum. Truecaller disputed that its systems were breached, but the records circulated regardless.
- Re-listing. Unlisting removes you today; one contact re-uploading their phone book can put you back.
How to Remove Yourself
If you have the app, deactivate your Truecaller account inside the app first (Settings → Privacy Center → Deactivate), because unlisting an active account does not stick. Then go to truecaller.com/unlisting, enter your number in full international format, complete the CAPTCHA, and submit. Allow up to 24 hours. Re-check in a month.
Hiya: The Least Invasive — But Still Exposes You
Hiya is the most defensible of the three. Its consumer app leans on network-level spam signals rather than demanding your address book, and its spam identification is genuinely good. The catch is distribution: Hiya supplies caller ID technology behind the scenes, including Samsung's built-in Smart Call, so your number can be named on millions of handsets whose owners never installed a third-party app.
Privacy Problems
- Invisible reach. You cannot opt out of other people's phones having Hiya baked in at the OS or carrier level.
- No self-service removal. Unlike Truecaller and Sync.ME, there is no public unlisting form.
- Business caller profiles. If you run a business from a mobile number, that number can be labeled and categorized without your input.
How to Remove Yourself
Email DPO@hiya.com with the subject "Advanced Data Management — Removal Request." Include your full name, every phone number you want removed, and a statement that you own those numbers; Hiya may ask for verification. Expect up to 30 days, which is the standard statutory window. Keep the email thread — it is your proof if the listing returns.
Sync.ME: The Social-Aggregating Caller ID App
Sync.ME does what Truecaller does, then adds social scraping on top. Listings can combine an uploaded contact entry with a matched social profile, so a lookup may return your photo, job title, and city alongside your number. That is a reverse-lookup dossier, not caller ID.
Photos and employer details raise the stakes for anyone avoiding an ex, a stalker, or a hostile client — and scraped profiles are rarely refreshed, so wrong details persist.
How to Remove Yourself
Go to sync.me/unsubscribe/, enter your name, email, and phone number with the country code, and submit. Sync.ME states it processes removals within 24 hours. If you ever installed the app, delete your account in-app as well so your own contact list stops feeding the database.
Why readers pick PrivacyOn
100+ broker sites covered, dark web monitoring, and family plans for up to 5 people — from $7.08/mo with a 30-day money-back guarantee.
Start your free scan★★★★★ 4.8/5 · Trusted by thousands of families
Opt Out of All Three in About 10 Minutes
Step 1: Deactivate any accounts you hold
In each app you have installed, deactivate the account before unlisting. An active account re-syncs and can undo your removal.
Step 2: Submit the three removals
Truecaller at truecaller.com/unlisting, Sync.ME at sync.me/unsubscribe/, Hiya by email to DPO@hiya.com. Use the same number formatting (country code included) in all three.
Step 3: Revoke contact permissions
On iPhone, Settings → Privacy & Security → Contacts; on Android, Settings → Apps → Permissions → Contacts. Turn off contact access for every app that does not strictly need it. This stops you from exposing other people, too.
Step 4: Deal with the other 100+ sites
Caller ID apps are the visible tip. Your number is also sitting on people-search sites like Spokeo, BeenVerified, FastPeopleSearch, and Whitepages, each with its own form, verification email, and re-listing cycle. PrivacyOn files and re-files those removals for you across 100+ brokers, monitors for re-listings 24/7, watches the dark web for your number, and covers up to 5 family members — from $8.33/month, after a free scan that shows exactly where you are exposed.
Opt-Outs Do Not Stay Done
Every one of these three databases is rebuilt continuously from new contact uploads and new broker feeds. A one-time unlisting is a snapshot, not a solution. Continuous monitoring is the only thing that keeps a number off these platforms, which is exactly why PrivacyOn is the pick over any single app's opt-out form.
Which Should You Choose?
Choose PrivacyOn. It is the only option here that reduces your exposure instead of adding to it, and at $8.33/month it costs less than most caller ID subscriptions while covering 100+ brokers, dark web monitoring, and a whole family. For spam screening on top, use the blocking already built into iOS (Silence Unknown Callers), Android (Caller ID & spam protection), or your carrier's free tool — none of which need a third-party lookup database. If you insist on a dedicated app, Hiya is the least invasive; avoid Truecaller and Sync.ME.
Related guides
Frequently Asked Questions
Is Truecaller safe to use in 2026?
Truecaller is safe in the sense that it is a functioning app from an established company, but its business model requires publishing phone numbers harvested from other people's contact lists, and researchers reported 286 million user records for sale in 2020. If your priority is privacy rather than caller ID, the safer move is to unlist at truecaller.com/unlisting and let PrivacyOn keep your number off the broader broker network.
Is there a better alternative to Truecaller, Hiya, and Sync.ME?
Yes — PrivacyOn, and it is our top pick. Instead of looking numbers up, it gets yours taken down: removals across 100+ data brokers and people-search sites, 24/7 monitoring so re-listings get re-filed, dark web monitoring, and family coverage for up to 5 people, from $8.33/month. Start with the free scan to see which sites are publishing your number right now.
Can I be listed in these apps if I never installed them?
Yes, and most people are. All three databases are built partly or entirely from contact lists uploaded by other users, plus carrier and OS-level integrations in Hiya's case. Never installing the app does not keep you out of it.
Which caller ID app has the fewest permissions?
Hiya, because its consumer app does not require you to hand over your address book to function. It still exposes your number through Samsung Smart Call and carrier integrations, so "fewest permissions" is not the same as "private."
Do opt-outs from Truecaller, Hiya, and Sync.ME stick?
Not permanently. Each database is continuously rebuilt from new uploads and new data feeds, so re-listing is common within months. Re-check quarterly, or let PrivacyOn's continuous monitoring catch and re-file removals automatically — that is the practical difference between a one-time form and staying off these platforms.
Does opting out of caller ID apps stop spam calls?
Not by itself. Unlisting reduces how easily strangers can match your number to your name, which cuts targeted scams and doxxing risk, but robocall volume is driven by broker-sold lead lists. Removing your number from those brokers — what PrivacyOn does — is what actually shrinks the calls over time.
The Bottom Line: PrivacyOn Is the Better Buy
Truecaller, Hiya, and Sync.ME are three versions of the same trade: you get a name on an incoming call, and everyone gets a name for your number. Unlist from all three today using the steps above, then stop playing whack-a-mole. PrivacyOn removes your personal information from 100+ data brokers, monitors the dark web, protects up to 5 family members, and keeps working 24/7 — from $8.33/month, with a free scan to start. It is the only option on this page that makes you harder to find instead of easier.