# DuoLine vs Group Catalog for Telegram

The clearest difference is review sentiment: Group Catalog for Telegram at 50% against DuoLine's 0%. Group Catalog for Telegram also leads on rating (4.4 vs 2.0) and ratings volume (151 vs 2). DuoLine's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. DuoLine sells 6 in-app purchases, starting at $4.99 per 7 days and Group Catalog for Telegram sells 3 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Group Catalog for Telegram holds the better App Store score, 4.4 against 2.0. That said, the two scores are not equally well evidenced: Group Catalog for Telegram has 151 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of DuoLine's written reviews are positive against 50% of Group Catalog for Telegram's.

DuoLine ships an update every 8 days, Group Catalog for Telegram every 5 days. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | DuoLine | Group Catalog for Telegram |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (2 ratings)](https://appshunter.io/ios/app/duoline-second-mobile-number/id6447859028/reviews) | **[4.4 (151 ratings)](https://appshunter.io/ios/app/group-catalog-for-telegram/id6514320659/reviews)** |
| Number of ratings | 2 | **151** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 5 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 57 MB | 71 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SORO SONS BILGI TEKNOLOJISI TICARET LIMITED SIRKETI](https://appshunter.io/developer/1091025398) | [Gowalk - Fzco](https://appshunter.io/developer/1701769855) |

## What reviewers say

### DuoLine

[App page](https://appshunter.io/ios/app/duoline-second-mobile-number/id6447859028)

Obtain a secondary phone number for private calls, business use, or social media verification. Manage multiple lines easily without a second device. Enjoy unlimited calling and international access with robust privacy options.

**Highlights:** Second phone number for private use, Business communication line, Social media verification codes, Unlimited calling, International calls, Ad-free experience, No extra SIM card needed

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Number Weekly | $4.99 | per 7 days |
| 1 Number Monthly | $9.99 | per month |
| 3 Number Weekly | $12.99 | per 7 days |
| 5 Number Weekly | $19.99 | per 7 days |
| 3 Number Monthly | $24.99 | per month |
| 5 Number Monthly | $44.99 | per month |


### Group Catalog for Telegram

[App page](https://appshunter.io/ios/app/group-catalog-for-telegram/id6514320659)

Discover and search Telegram channels and groups effortlessly. Browse by category, find trending content, and add your own channels. Stay updated with daily additions and explore popular communities.

**Highlights:** Categorized channel browsing, Quick channel search, Add your own channels, Daily channel updates, Trending channel discovery, Paid subscriber benefits

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $7.99 | per 7 days |
| Premium Features | $9.99 | per 7 days |
| Premium subscription | $49.99 | per year |


## Frequently asked questions

### Is DuoLine free?

DuoLine is free to download, with in-app purchases available.

### Is Group Catalog for Telegram free?

Group Catalog for Telegram is free to download, with in-app purchases available.

### Which has better reviews, DuoLine or Group Catalog for Telegram?

Group Catalog for Telegram is rated higher. DuoLine averages 2.0 out of 5 from 2 ratings, while Group Catalog for Telegram averages 4.4 from 151 ratings.

### Do DuoLine or Group Catalog for Telegram have ads?

Neither DuoLine nor Group Catalog for Telegram shows ads.

### Which is updated more often, DuoLine or Group Catalog for Telegram?

DuoLine ships an update every 8 days, and Group Catalog for Telegram every 5 days. Most recently, DuoLine was updated on October 24, 2026 and Group Catalog for Telegram on October 27, 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.*