Comparison

AI Line vs Filter

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

Head to head
About

AI Line

Get a secure US second phone number for private calls and texts. Manage all your communications, including Wi-Fi calling and affordable international options, without exposing your primary number. Features an AI assistant to handle calls and provide summaries.

Highlights
  • Secure US second phone number
  • Privacy-first calls and texts
  • Wi-Fi calling and international calls
  • SMS/MMS texting
  • AI call assistant
  • Instant call summaries
Features
Read full description

AI Line: Your Dedicated Second Phone Number for Calls & Texts Get a Secure US Second Phone Number for Private Calls, Text Messages & Smarter Communication! Take control of your communication with AI Line! This privacy-first app provides you with a dedicated second phone number designed for modern life. Effortlessly manage phone calls and text messages (SMS/MMS), keeping your personal number private. Enjoy crystal-clear calls over Wi-Fi, affordable international calling, and seamless texting. Perfect for professionals, entrepreneurs, and anyone needing to separate work and personal life. Your Dedicated Second Phone Number Solution: • Secure US Second Number: Make and receive phone calls, send and receive text messages, and manage all conversations through your dedicated second phone number. Protect your personal number at all times. • Privacy-First Calls & Texts: Share your AI Line number freely for work calls, client texts, online sales, or travel. Never expose your primary number again. • Global Flexibility for Calls & Texts: Use Wi-Fi calling to stay connected anywhere, even with poor service. Make affordable international calls directly from your second number – no extra SIM needed. Send texts globally. Seamless Phone Call & Text Message Features: • Full Calling & Messaging Power: Use your second phone number like your primary line. Supports voice calls, SMS texts, MMS texts, Wi-Fi calls, international calls, and voicemail. • Stay Connected Anywhere: Make phone calls over Wi-Fi to save data or bypass poor coverage. Call international numbers affordably without roaming fees. Send and receive texts reliably. • Flexible Use for Calls & Texts: Ideal for temporary needs (travel, gig work) or as a permanent business number for client calls and text messages. AI-Powered Call Management: • Build Your AI Call Assistant: Enable the AI assistant to automatically answer your phone calls 24/7. Customize voice models, greetings, and skills to handle calls your way. • Instant Call Summaries & Reports: After every call answered by AI, get an automatic summary and key details (appointments, inquiries) sent straight to you. Never miss crucial info from a call. Why AI Line is Your Best Second Number for Calls & Texts: • Ultimate Second Number Flexibility: Use it for business calls, personal texts, gig work, online dating, or affordable international calls. • Smart Calling & Texting: Save costs with Wi-Fi calls and texts. Connect globally with low-cost international calling and texting. • Privacy Guaranteed: Shield your primary number while seamlessly managing all phone calls and text messages. • All-in-One Simplicity: One app for your second phone number, calls, texts, Wi-Fi calling, and global connectivity. • Zero Ads, No Distractions: Enjoy uninterrupted phone calls and text messages – AI Line is completely ad-free. Download AI Line Today! Get your second phone number now – make private calls, send secure texts, and protect your privacy effortlessly! Subscription Terms ● Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s app store Account Settings after purchase. ● Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. The cost depends on the selected plan. Privacy Policy: https://www.phonenumber.ai/privacy_policy Terms of Use: https://www.phonenumber.ai/terms_of_service Have questions? Contact AI Line support team: support@phonenumber.ai

About

Filter

This app simplifies HVAC filter replacements for multi-unit properties. Scan filter QR codes, verify matches, and log replacements with unit numbers to a secure cloud database. It provides a traceable history for property managers and maintenance teams.

Highlights
  • Fast QR code scanning
  • Instant filter validation
  • Unit number capture
  • Auto-remembered community ID
  • Cloud logging of replacements
  • Scan history tracking
  • Simple, focused user interface
Features
Read full description

Filter Smart makes HVAC filter replacements simple, accurate, and traceable across apartments and multi-unit properties. Scan the QR code included with the filter, confirm it’s the right match, enter the unit number, and submit a time-stamped record to the cloud—right from your phone. Your community ID is saved after the first launch, so scanning is fast every time. How it works Enter your Community ID once. If it’s recognized, it’s remembered for next time. Scan the QR code on the new air filter to validate the filter. Enter the unit number and Submit. The app logs the scan with the community, unit, and confirmation details. Who it’s for • Property managers and maintenance teams who need proof of service. • Multifamily communities and student housing that replace filters on a schedule. • On-site staff and contractors who want a quick, standardized workflow. Key features • Fast QR scanning: Open the app, point the camera, and capture the code in seconds. • Instant validation: Know immediately whether the filter you scanned is the one intended for that property. • Unit capture: Add the unit number so every record is specific and auditable. • Auto-remembered community: Your approved Community ID is saved for future scans to reduce errors. • Cloud logging: Each submission stores the confirmation, community, and unit details in a secure database. • Scan history: See a clear list of past scans with dates and units so teams can verify replacements. • Simple, focused UI: Purpose-built for speed in the field—no clutter, no training required. • Works great online: Records are submitted to the cloud for centralized access and reporting. • Privacy-conscious: We only store the data needed for verification (community, unit, and scan details). Why Filter Smart • Reduce mistakes from manual entry and paper logs. • Standardize your filter-replacement process across teams and properties. • Gain traceability with a reliable scan history tied to each unit. Support If you need help or have feature requests, contact your property administrator or support. Note: Filter Smart is designed for communities that have been onboarded to the system. If your Community ID isn’t recognized, please reach out to your property manager to be added.

Screenshots

AI Line4 screens
Filter4 screens

Verdict

The call

The clearest difference is in-app purchases: Filter at none against AI Line's 10. Filter also leads on rating (5.0 vs 4.7). AI Line's advantage is ratings volume (1.1K vs 1) and update cadence (every 2 weeks vs every 6 weeks). On price, ads 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. AI Line sells 10 in-app purchases, starting at $4.99 per month. Filter asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Filter holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: AI Line has 1.1K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

AI Line ships an update every 2 weeks, Filter every 6 weeks. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

Scorecard7 real differences · 4 level
AI Line versus Filter: the parameters behind the verdict, then further details
ParameterAI LineFilter
PriceFreeFree
Rating4.7 (1.1K ratings)5.0 (1 ratings) — better
Positive reviews40.9% of reviews—
Number of ratings1.1K — better1
Update frequencyEvery 2 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#194 — better—
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better17.6
Further details — not scored
Size86 MB31 MB
Age rating4+4+
DeveloperSecond Phone Number IncEpic Genius LLC

Customer experience

AI Line

All ratings724 ratings
Positive93.5%
Neutral2.5%
Negative4.0%
Written reviews22 reviews
Positive40.9%
Neutral4.5%
Negative54.5%

Filter

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

10 purchases

AI Line

Subscriptions7
  • Monthly Phone Number$4.991 Month
  • 1 Phone Line - Week$7.997 Days
  • 1 Phone Line3 Days trial$7.997 Days
Show 4 more
  • Phone Line Basic Plan$9.991 Month
  • 1 Phone Line - Month$12.991 Month
  • 3 Phone Line - Month$14.991 Month
  • 1 Phone Line - Year$39.991 Year
One-time3
  • Small Package Credits$4.99
  • Medium Package Credits$9.99
  • Large Package Credits$18.99
None

Filter

No in-app purchases

Questions

Is AI Line free?
AI Line is free to download, with in-app purchases available.
Is Filter free?
Filter is free to download, with no in-app purchases.
Which has better reviews, AI Line or Filter?
Filter is rated higher. AI Line averages 4.7 out of 5 from 1.1K ratings, while Filter averages 5.0 from 1 ratings.
Do AI Line or Filter have ads?
Neither AI Line nor Filter shows ads.
Which is updated more often, AI Line or Filter?
AI Line ships an update every 2 weeks, and Filter every 6 weeks. Most recently, AI Line was updated on November 4, 2026 and Filter on November 5, 2026.

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