Comparison

Numberbook True Caller vs Dzzz

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Numberbook True Caller

Instantly identify unknown callers and search for contact information using a vast database. Find names from numbers or numbers from names, and save important contacts with a single click. Supports worldwide searches and country-specific filtering.

Highlights
  • Identify unknown callers
  • Search by name or number
  • Find phone numbers from names
  • Find names from phone numbers
  • Save contacts easily
  • Bookmark search results
  • Worldwide number search
Features
Read full description

The Numberbook True Caller app enables you to find any number or name and check the name of the caller easily. App is an onestop solution to know caller id and check who called you. The app has a huge database of contacts with names and numbers, having millions of records where you can find anyone with a name and number. Ultimate features of the app: ->Check the caller by name or phone number. -> Find the name from phone number. -> Find the phone number from name. -> Save contacts in one click and send message. -> Bookmark any results -> Search worldwide phone numbers or filter by country

About

Dzzz

Features
Read full description

Ninety small tools that do their work on your iPhone. Most apps like these upload your file to a server, process it there, and send it back. Dzzz doesn't. The processing engines are inside the app, so your video, your documents and your recordings stay on your device — and most tools keep working with no signal at all. WHAT'S INSIDE Video and audio — compress a clip to fit an email or a message, trim it, mute it, pull the audio out, add a soundtrack, make a reel, grab a frame. Documents — scan a page with the camera and get a clean, straightened PDF. Merge, split and compress PDFs. Pull images out of a PDF. Turn notes into a PDF. Images — compress a batch without visibly losing quality, resize, convert between formats, remove a background, blur people out of a photo, pick a colour from anything the camera sees. Audio and speech — transcribe a recording into text, on your device. Translate subtitles. Clean up background noise. Read text aloud. Everyday — currency, unit and cooking conversions, loan and percentage maths, GPA, calorie and health calculators, a password generator, a QR and barcode scanner. Made for Arabic — every tool is fully translated and laid out right-to-left, not mirrored as an afterthought. Numbers to Arabic words for cheques. Zakat and end-of-service calculators. Hijri dates. Qibla direction. A Baloot scorekeeper. Also in Spanish and English. NO ACCOUNT, NO SIGN-IN There is nothing to register for. We operate no server that receives your files, photos, audio or text. ABOUT OFFLINE Most tools work with no connection. Three need one, and each says so on its own screen: currency conversion and gold prices fetch published rates, and My IP shows you your own address. Some tools fetch a processing engine the first time you open them — the app tells you the exact size first and waits for you to agree. After that they work offline too. A NOTE ON THE HEALTH TOOLS The calculators report a number and its published reference range, and stop. They are not medical advice and they do not diagnose anything. The cycle tracker keeps its data on your device only — no account, no sync, and a control that deletes everything it holds.

Screenshots

Numberbook True Caller4 screens
Dzzz4 screens

Verdict

The call

The clearest difference is in-app purchases: Dzzz at none against Numberbook True Caller's 1. Dzzz also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Numberbook True Caller sells 1 one-off in-app purchase. Dzzz asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Numberbook True Caller versus Dzzz: the parameters behind the verdict, then further details
ParameterNumberbook True CallerDzzz
PriceFreeFree
Rating1.0 (4 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings4 — better—
Update frequencyMonthly—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better16.4
Further details — not scored
Size42 MB99 MB
Age rating17+4+
DeveloperSILVERSKY TECHNOLOGYMuBoori

In-app purchases

1 purchases

Numberbook True Caller

One-time1
  • Premium Caller ID Lookup$2.99
None

Dzzz

No in-app purchases

Questions

Is Numberbook True Caller free?
Numberbook True Caller is free to download, with in-app purchases available.
Is Dzzz free?
Dzzz is free to download, with no in-app purchases.
Do Numberbook True Caller or Dzzz have ads?
Numberbook True Caller shows ads; Dzzz does not.

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