Sync.ME Alternative: How Traceback Reveals Hidden and No Caller ID Calls
An honest comparison of Traceback and Sync.ME
Sync.ME helps you identify known callers and manage your contacts, but it won't reveal the actual number behind a hidden or No Caller ID call. That's often the exact call you need to identify.
Photo: Pixabay
Bottom Line
Choose Traceback if you're dealing with hidden, blocked, or No Caller ID calls and need to see the actual number behind them. Choose Sync.ME if you want to sync contacts across devices and get caller ID for known numbers. Traceback is purpose-built to reveal anonymous callers; Sync.ME is purpose-built to organize and identify your existing contacts.
Quick Comparison
| Feature | Traceback | Sync.ME |
|---|---|---|
| Reveals hidden / No Caller ID calls | Yes | No |
| Works on iPhone | Yes | Yes |
| Works on Android | Yes | Yes |
| Spam call blocking | No (focus is on revealing) | Yes |
| Free trial | Yes (see pricing) | Free app |
| Best for | Unmasking anonymous callers | Contact management and known-caller ID |
What Sync.ME Does Well
Sync.ME excels at contact organization and caller ID enrichment for numbers already in public databases. It syncs your contacts across devices, shows names and photos for incoming calls when the number is known, and flags spam based on community reports. If you want to keep your contact list clean and see who's calling when the number is visible on your screen, Sync.ME does that job well.
The app blocks known spam calls and filters suspected spam texts. It's free on iPhone and Android. For contact management and identifying callers whose numbers show on your screen, it's a solid choice.
The Honest Differences Between Traceback and Sync.ME
What problem each solves
Sync.ME solves contact organization and known-caller identification. You see a number on your screen, Sync.ME tells you whose it is based on public records and community reports. Traceback solves a different problem: you see "No Caller ID" on your screen, Traceback reveals the actual number behind that hidden call.
How each works
Sync.ME pulls from a public database and community reports to match a visible number to a name. It doesn't capture hidden numbers because there's nothing to match. Traceback uses conditional call forwarding to capture the real number when you decline or ignore a No Caller ID call. You decline the call, Traceback forwards it through its system, and within seconds you see the number on your Traceback app. (For setup steps, see Apple's official call forwarding guide for iPhone or check how Traceback works on Android.)
When you'd use each
Use Sync.ME when you want to manage contacts, sync them across devices, or identify known callers. Use Traceback when you're being harassed or pranked by "No Caller ID" calls and you need the actual number.
Who Each Is Best For
Choose Traceback if
You're getting hidden, blocked, or No Caller ID calls. Harassment, scams, stalking, prank calls-whatever the reason, you need the real number. Traceback works on both iPhone and Android, and you can generate a PDF report of any revealed call to save or share. You try it free, then subscribe for unlimited identifications. See supported US carriers: Verizon, AT&T, T-Mobile, and more.
If you're on iPhone, Traceback gives you the same reveal power as on Android. Both platforms get the full feature set, no compromises.
Choose Sync.ME if
You want to sync your contacts across devices, enrich caller ID for numbers that already show on your screen, or organize your contact list. You're not dealing with hidden callers. Sync.ME's strength is contact management and spam detection for visible numbers, not revealing "No Caller ID."
What Reddit and Online Communities Ask
Reddit threads often ask for a Sync.ME alternative that reveals hidden callers. The answer: Sync.ME doesn't reveal hidden numbers. It matches visible numbers to names. If your problem is No Caller ID calls, you need Traceback, not a contact-sync app.
If you're looking for a free Sync.ME alternative on iOS, Traceback offers a free trial so you can test the reveal feature before subscribing.
The Hidden-Caller Problem Sync.ME Doesn't Solve
No Caller ID calls are invisible to database apps. There's no number to look up. Sync.ME can't help. Traceback captures the number through conditional call forwarding, so you see exactly who called. It's the only way to reveal a truly hidden caller on iPhone or Android. (For a deeper dive, read What Does No Caller ID Mean? and see the difference between private, unknown, and No Caller ID calls.)
One thing Traceback does not do: it doesn't defeat spoofed caller ID. If a scam call shows a fake number or fake name like "Medicare Services" on your screen, Traceback won't reveal the real number behind the spoof. (Read more: Does Traceback detect spoofed callers?) Traceback is built for hidden, blocked, and No Caller ID calls-the calls that arrive with no number shown at all.
If you block No Caller ID calls on your phone, you can still reveal them with Traceback by setting up conditional call forwarding. The blocked call forwards to Traceback, and you see the number without your phone ringing.
The FCC and Hidden Callers
The FCC requires carriers to implement STIR/SHAKEN to reduce spoofed robocalls, but that doesn't stop hidden or No Caller ID calls. Those callers block their number at the carrier level, so the call arrives with no caller ID at all. The FCC's guide to stopping unwanted robocalls offers advice on spam, but it doesn't solve the No Caller ID problem. For that, you need a reveal tool.
What to Do Right Now
- Decide which problem you're solving: hidden callers or contact management.
- If hidden callers, download Traceback from the App Store or Google Play and start your free trial.
- Open the app, create your account, and set up call forwarding on your iPhone or Android.
- When a No Caller ID call comes in, decline it. Traceback captures the number within seconds.
- Save the report if the call was harassing, and file a complaint at reportfraud.ftc.gov with the report attached.
- If contact management is your goal, explore Sync.ME's features on their official site.
If you're ready to reveal the hidden callers filling your iPhone or Android with No Caller ID calls, try Traceback free. For more comparisons with other reveal apps, read TrapCall vs MaskOff vs Traceback or see our full list of the best apps to reveal No Caller ID.
By Tom Aflalo, Co-Founder · Last reviewed November 2026
Tom Aflalo is co-founder of Traceback, the app that reveals the real number behind hidden and No Caller ID calls. Traceback has revealed 167,000+ hidden and No Caller ID calls for 34,000+ people. We cite primary sources inline and check every article against how the app actually works.
⚠️ Disclaimer: This article is general information only and does not constitute legal advice. For any specific legal situation, consult a qualified attorney. Traceback is not responsible for legal outcomes.
Tom Aflalo is co-founder of Traceback, the app that reveals the real number behind hidden and No Caller ID calls. He works on the product and on the guides in this blog and help center, which are checked against how the app actually works.
feedback@trytraceback.com
