Comparison

Duplicate Contacts Manager vs KEL Smart

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

Head to head
About

Duplicate Contacts Manager

This app helps you clean up your address book by merging and removing duplicate contacts. It offers various options for identifying and resolving duplicates based on identical information, similar names, or phone numbers. You can also back up and restore your contacts for safety.

Highlights
  • Merge duplicate contacts
  • Remove contacts with missing info
  • Backup and restore contacts
  • Identify identical contacts
  • Merge contacts with similar names
  • Merge contacts with similar phone numbers
Features
Read full description

Merge Duplicate Contacts & Remover has following options: 1. Merge & Remove duplicate contacts 2. Delete contacts with no name, number, email. 3. Backup and Restore contacts (in .vcf file) For merging and deleting duplicate contacts following options available: 1. Duplicate Contacts (where all contacts are identical) : Here app deletes duplicate contacts. 2. Similar Phone number (only phone number number in all contacts similar) : Here app merges contacts and make a single contact. 3. Similar Name (name in all contacts are similar) : Here app merges contacts and make a single contact. 4. Inside Duplicates (Same number is stored two times in one contact) : Here app removes other numbers within contact. 5. Duplicate Email (Same email id in all contacts) : Here app merges contacts and make a single contact. Using this app, you can fix your address book easily. Note: Please make sure that you review all duplicates and backup your contacts before merging your contacts.

About

KEL Smart

Features
Read full description

KEL Smart - Smart Tank Monitoring System Monitor your water, fuel, and liquid storage tanks in real-time from anywhere. KEL Smart connects to ESP32 sensors to provide instant level readings, alerts, and historical data tracking. FEATURES: - Real-Time Monitoring - View tank levels updated every 5 seconds - Multiple Tank Support - Monitor water, diesel, gasoline, oil, and other liquids - Smart Alerts - Get notified when tanks are low, critical, or full - Historical Charts - Track level changes over time with 8-hour history graphs - Multi-User Support - Share access with team members - Offline Mode - Continue viewing data even without internet - Dark Mode UI - Easy-to-read interface designed for industrial use PERFECT FOR: - Homeowners monitoring water tanks - Farms tracking fuel and water storage - Businesses managing multiple liquid inventories - Industrial facilities with tank farms - Remote locations needing tank oversight HOW IT WORKS: 1. Install ESP32 sensor on your tank 2. Connect sensor to WiFi and Firebase 3. Add tank in the KEL Smart app 4. Monitor levels in real-time from your phone SECURITY & PRIVACY: - Secure cloud storage with Firebase - User authentication required - Role-based access (Admin/User) - Your data is private and encrypted SUBSCRIPTION: - Free tier: Monitor up to 3 tanks - Pro tier: Unlimited tanks and advanced features - Enterprise: Custom solutions for large deployments KEL Smart - Never run out. Always know.

Screenshots

Duplicate Contacts Manager4 screens
KEL Smart4 screens

Verdict

The call

The clearest difference is in-app purchases: KEL Smart at none against Duplicate Contacts Manager's 1. KEL Smart also leads on ads (none vs shown). Duplicate Contacts Manager's advantage is update cadence (every 3 weeks vs every 4 months). 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. Duplicate Contacts Manager sells 1 one-off in-app purchase. KEL Smart asks for nothing beyond the download.

UpkeepUpdate frequency

Duplicate Contacts Manager ships an update every 3 weeks, KEL Smart every 4 months. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 7 level
Duplicate Contacts Manager versus KEL Smart: the parameters behind the verdict, then further details
ParameterDuplicate Contacts ManagerKEL Smart
PriceFreeFree
Rating4.1 (763 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings763 — better—
Update frequencyEvery 3 weeks — betterEvery 4 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.1 — better
Further details — not scored
Size8 MB45 MB
Age rating12+4+
DeveloperVimal JainThe Transporters

Bugs and requests

Duplicate Contacts Manager

Reported bugs

3 issues
  • App crashes or freezes during contact processing
  • Merged contacts losing important details like notes and birthdays
  • Incorrect contact information after merging (e.g. wrong phone numbers)

Requested features

4 requests
  • Undo/rollback functionality
  • More granular control over merge/delete options
  • Support for sorting and filtering contacts
  • Backup and restore options for contact data

KEL Smart

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Duplicate Contacts Manager

One-time1
  • Merger Pro$0.99
None

KEL Smart

No in-app purchases

Questions

Is Duplicate Contacts Manager free?
Duplicate Contacts Manager is free to download, with in-app purchases available.
Is KEL Smart free?
KEL Smart is free to download, with no in-app purchases.
Do Duplicate Contacts Manager or KEL Smart have ads?
Duplicate Contacts Manager shows ads; KEL Smart does not.
Which is updated more often, Duplicate Contacts Manager or KEL Smart?
Duplicate Contacts Manager ships an update every 3 weeks, and KEL Smart every 4 months. Most recently, Duplicate Contacts Manager was updated on October 13, 2026 and KEL Smart on October 7, 2026.

Other comparisons