# AI Line vs Filter

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.

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.

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.

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.

## The numbers

| Metric | AI Line | Filter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (1.1K ratings)](https://appshunter.io/ios/app/ai-line-second-phone-number/id6743828840/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/filter-smart/id6746522124/reviews)** |
| Number of ratings | **1.1K** | 1 |
| Positive reviews | 40.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#195** | — |
| Size | 86 MB | 31 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Second Phone Number Inc](https://appshunter.io/developer/1615561967) | [Epic Genius LLC](https://appshunter.io/developer/1193070219) |

## What reviewers say

### AI Line

[App page](https://appshunter.io/ios/app/ai-line-second-phone-number/id6743828840)

**Currently charting:** #195 Top Grossing · Productivity (US App Store)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Phone Number | $4.99 | per month |
| 1 Phone Line - Week | $7.99 | per 7 days |
| 1 Phone Line | $7.99 | per 7 days |
| Phone Line Basic Plan | $9.99 | per month |
| 1 Phone Line - Month | $12.99 | per month |
| 3 Phone Line - Month | $14.99 | per month |
| 1 Phone Line - Year | $39.99 | per year |
| Small Package Credits | $4.99 | one-time |
| Medium Package Credits | $9.99 | one-time |
| Large Package Credits | $18.99 | one-time |


### Filter

[App page](https://appshunter.io/ios/app/filter-smart/id6746522124)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*