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156 •••• 5472
FriCallerIndex: Sales · Declined
Give every call a little context
Mark calls.
Block spam.
Add who called, why, and whether you want another call. CallerIndex turns your decisions into useful caller context—without forcing every new person or service number into Apple Contacts.
For iPhone · iOS 17.0 or later · Core features are free
New contact
Delivery
Spam
9:41● ● ●
Recents•••
S
134 •••• 1335
FriCallerIndex: Property service
N
187 •••• 3824
ThuCallerIndex: Met at an event
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Swipe left in RecentsUse the iPhone report entry to mark
MarkAdd useful call context
IdentifyUnderstand calls on iPhone
BlockOnly numbers you choose
OrganizeKeep a calm second address book
Three small steps
Your judgment.
Remembered by iPhone.
CallerIndex does not guess for you or silence every stranger. It makes each decision reusable the next time a number appears.
Open from Recents
Swipe left on a number and use the iPhone system reporting entry.
Add the missing context
Choose a broad type, a specific scene, and a note that will help later.
Mark or block
Keep the call allowed with a label, or also block that explicit number.
Second address book
No need to clutter Apple ContactsKeep where and why you metM
Maya Lin
Met at a product forum
- Phone
- 138 •••• 2190
- Organization
- Greenfield Lab
- Added from
- Call label
- First met
- October 2026
A gentle layer before Apple Contacts
Meet first.
Decide what belongs later.
Neighbors, classmates, event contacts, couriers, and repair services can be worth remembering without immediately becoming permanent contacts.
- Organize a person even when you do not know their name
- Keep organizations, roles, industries, addresses, and multiple numbers
- Record when and how each entry was added
- Move truly important callers into Apple Contacts when needed
More than “spam” or “contact”
Let each kind of number
have a sensible place.
Service calls
Delivery, maintenance, property services, and official support stay recognizable next time.
Delivery · Property serviceNew people
Keep valuable context without letting every new number crowd your permanent contacts.
Met at an event · NeighborUnwanted calls
Record the reason and choose whether an explicit number should also be blocked.
Sales · Bad timingClear boundaries make protection trustworthy
What CallerIndex can do—
and what iOS controls.
Explicit numbers, clear control
Numbers you mark, import, or receive from an enabled directory can be synchronized to iOS identification and blocking lists.
Unknown numbers stay with iPhone
Previously unseen numbers are governed by your carrier, Focus, and iPhone unknown-caller settings.
The app updates after saving
CallerIndex reloads the system directory. Reopening Phone is the quickest common way to check a new label.
iOS schedules the final display
No third-party app can force Phone to redraw, promise instant labels, or guarantee a caller's identity.
Your data, under your control
Useful on one phone.
Recoverable when you choose.
Core labeling, blocking, on-device contact management, import/export, and widgets remain available. Optional Cloud Sync membership keeps labels and private contacts aligned across your devices and restores the latest successful cloud copy.
HTTPSEncrypted storageExportableRevocable devices
Frequently asked
Know the rules.
Then make it yours.
Can CallerIndex block every unknown call?
No. CallerIndex identifies or optionally blocks explicit phone numbers. Calls from completely unseen numbers remain governed by iPhone and carrier settings.
Why has a new label not appeared in Phone yet?
The app updates the system directory after saving, while iOS schedules the final interface refresh. Fully reopening Phone is the quickest common check. Contacts, blocked lists, and Focus can also affect the result.
What is the difference between marking and blocking?
Marking keeps a useful label while allowing the call. Marking and blocking also places that explicit number in the iOS blocking directory.
Does the second address book write to Apple Contacts?
Not by default. It is private contact management inside CallerIndex. When system-level important-caller behavior is needed, the app guides you to add that person to Apple Contacts.
Can CallerIndex read my full call history?
No. iOS does not expose the complete system call history to third-party apps. A marking action starts only when you deliberately use the system reporting entry.
Let the next call be more than a number
Add context.
Keep your choices.
Get CallerIndex
CallerIndex · Ages 4+ · iPhone