Comparison

Cleanup Duplicate Contacts! vs PDF Indexer

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

Head to head
About

Cleanup Duplicate Contacts!

This app automatically finds and merges duplicate contacts in your address book. It offers customizable matching levels and provides detailed reports. The app also suggests contact updates using AI and can capture new contacts from email signatures.

Highlights
  • Instant duplicate contact cleanup
  • Customizable merge levels
  • Automatic contact update suggestions
  • Email signature contact capture
  • Manages multiple contact sources
  • Backup and restore contacts
Features
Read full description

***Cleanup Duplicate Contacts app is now completely FREE*** ***REDUCED FROM $2.99 to $0 FOR A LIMITED PERIOD*** ---- NEW FEATURE: AUTOMATIC CONTACT UPDATE SUGGESTIONS NOW AVAILABLE ON CLEAN UP DUPLICATES APP ---- Cleanup Duplicate Contacts app will automatically suggest contact updates if any of the contacts in your address book have any changes in their contact information such as phone, work email, company, job title, location etc. The Updates feature is powered by our proprietary and secure AI Engine which discovers when important connection details change in your address book, and surfaces new contact info or updates so no contact information in your contact book becomes outdated. This mobile App runs automatically but you will stay in control. Before scanning your contacts, you can configure the merge level: only detect 100% matches or also detect several kinds of partial matching. After that, it will run a scan to check for all duplicate contacts. Once the scan is complete, it will present you with the results. You can then choose to remove all matching contacts from your address book or to merge only a sub-selection of the duplicates found. We let you analyse your address book as many times as you need for free. Also, the full preview of duplicates and partial duplicates is free as we want to convince you of the power of our deduplication algorithm. After you had a chance to review the suggested merges and we convinced you that our algorithm does a great job, you'll be prompted to upgrade to the premium version. Once you upgraded the app once, you will be able to save later analysis results for free as often as you want. Merging contacts happens automatically. All partially matching contact details will be merged under just one contact for better management. The contact management App also works flawlessly with multiple sources like Gmail and iCloud to keep all duplicate contacts centralised. - App Features - # Instant Cleanup of Duplicate Contacts # Choose the merge-level you need # Very fast - 5000 contacts centralized in about 45 seconds # Detailed reports of scanned results # Automatic merging of duplicate contacts # Manages multiple contact sources like Gmail and iCloud # Creates a backup of your address book before cleaning # Lets you easily restore backups or a part of a backup # Save and export contacts from your iPhone as a .CSV file # Introducing Email Signature Capture - connect your mailbox for Email Signature Capture and automatically discover new contacts from your email exchanges. You can save newly found contacts and contact updates directly on your phone’s address book (**available only on business emails on Outlook and Gmail**) # ”Updates” feature: Cleanup Duplicate Contacts app will automatically suggest contact updates if any of the contacts in your address book have any changes in their contact information such as phone, work email, company, job title, location etc. Cleanup Duplicate Contacts will clean up your mobile address book within seconds and you'll be amazed. This app is the ultimate contact cleaner. *****Awesome Customer Support***** If you have any questions or suggestions, please contact us at help@circleback.com

About

PDF Indexer

This app creates fast navigation for PDFs by turning title-to-page mappings into searchable indexes. It allows you to import mappings from various file formats and opens directly to the mapped page within the PDF. All data is stored locally on your device for privacy.

Highlights
  • Search across multiple indexed PDFs
  • Exact, prefix, substring, and alias matching
  • Jump directly to mapped pages
  • Import mappings from CSV, JSON, XLSX, and text
  • Page-offset calibration
  • Mapping correction and export
  • Local-first data storage
Features
Read full description

PDF Indexer turns a separate title-to-page mapping into fast navigation for a PDF. Choose a PDF, add its index, and search titles across your library. On import, the app divides the PDF into private on-device sections at indexed title pages and removes its temporary full-size copy. A result opens only the matching section at the mapped PDF page. Page offsets handle documents whose printed page numbers do not match their PDF positions. Import mappings from CSV, JSON, XLSX, pasted text, or manual entry. Review validation warnings before saving, correct individual rows later, replace a mapping without copying the PDF again, and export a mapping as CSV or JSON. PDF Indexer is local-first. It needs no account and has no publisher-operated analytics or app-run cloud service. Your app library stays in private device storage unless you choose to export a mapping. The free app may show non-personalized banner ads after any required privacy choices. PDFs, mappings, titles, and searches are not sent to the ad service. See the Privacy Policy for operating-system backup details. Highlights: • Search across multiple indexed PDFs • Exact, prefix, substring, and alias matching • Jump directly to mapped pages • CSV, JSON, XLSX, pasted-text, and manual mapping input • Page-offset calibration and bounds validation • Mapping correction, replacement, and export • Missing-file recovery without losing the mapping • Light and dark appearance PDFs and mappings are supplied by the user. PDF Indexer does not include third-party books or indexes.

Screenshots

Cleanup Duplicate Contacts!4 screens
PDF Indexer4 screens

Verdict

The call

The clearest difference is rating: PDF Indexer at 5.0 against Cleanup Duplicate Contacts!'s 4.5. PDF Indexer also leads on update cadence (every 2 days vs every 2 months) and iOS requirement (16.4 vs 18.6). Cleanup Duplicate Contacts!'s advantage is ads (none vs shown) and ratings volume (8.7K vs 2). On price, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

PDF Indexer holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Cleanup Duplicate Contacts! has 8.7K ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Cleanup Duplicate Contacts! ships an update every 2 months, PDF Indexer every 2 days. The most recent releases landed on October 28, 2026 and October 18, 2026 respectively.

Scorecard6 real differences · 4 level
Cleanup Duplicate Contacts! versus PDF Indexer: the parameters behind the verdict, then further details
ParameterCleanup Duplicate Contacts!PDF Indexer
PriceFreeFree
Rating4.5 (8.7K ratings)5.0 (2 ratings) — better
Positive reviews83.3% of reviews—
Number of ratings8.7K — better2
Update frequencyEvery 2 monthsEvery 2 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.616.4 — better
Further details — not scored
Size25 MB53 MB
Age rating4+4+
DeveloperBusiness Contacts Solutions, LLCMATTHEW BYONG BAE

Customer experience

Cleanup Duplicate Contacts!

All ratings8,122 ratings
Positive86.7%
Neutral3.2%
Negative10.1%
Written reviews468 reviews
Positive83.3%
Neutral2.4%
Negative14.3%

PDF Indexer

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Cleanup Duplicate Contacts!

Reported bugs

3 issues
  • Crashes during merging process
  • Inconsistent behavior when re-merging contacts
  • Deleting or losing contact information

Requested features

3 requests
  • Option to move contacts between groups
  • Ability to select all backup contacts for deletion
  • Improved backup and restore functionality

PDF Indexer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Cleanup Duplicate Contacts!

No in-app purchases

None

PDF Indexer

No in-app purchases

Questions

Is Cleanup Duplicate Contacts! free?
Cleanup Duplicate Contacts! is free to download, with no in-app purchases.
Is PDF Indexer free?
PDF Indexer is free to download, with no in-app purchases.
Which has better reviews, Cleanup Duplicate Contacts! or PDF Indexer?
PDF Indexer is rated higher. Cleanup Duplicate Contacts! averages 4.5 out of 5 from 8.7K ratings, while PDF Indexer averages 5.0 from 2 ratings.
Do Cleanup Duplicate Contacts! or PDF Indexer have ads?
PDF Indexer shows ads; Cleanup Duplicate Contacts! does not.
Which is updated more often, Cleanup Duplicate Contacts! or PDF Indexer?
Cleanup Duplicate Contacts! ships an update every 2 months, and PDF Indexer every 2 days. Most recently, Cleanup Duplicate Contacts! was updated on October 28, 2026 and PDF Indexer on October 18, 2026.

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