# C2S vs GK Premium

The clearest difference is rating: C2S at 4.7 against GK Premium's 1.0. C2S also leads on ratings volume (40 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

C2S holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: C2S has 40 ratings behind it against 1, so its average is the more settled of the two.

C2S ships an update every 3 weeks, GK Premium fortnightly. The most recent releases landed on October 27, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | C2S | GK Premium |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (40 ratings)](https://appshunter.io/ios/app/c2s/id1530652167/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/gk-premium/id6503151126/reviews) |
| Number of ratings | **40** | 1 |
| Positive reviews | 48.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | Free |
| Size | 59 MB | 81 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bruno Gardenal Yukihara](https://appshunter.io/developer/1107430541) | [ConectCon](https://appshunter.io/developer/1207275650) |

## What reviewers say

### C2S

[App page](https://appshunter.io/ios/app/c2s/id1530652167)

Receive intelligent alerts and integrate with major classified portals to accelerate negotiations and increase monthly sales. This tool helps sellers close more deals faster.

**Highlights:** Intelligent alerts, Classified portal integrations, Accelerate negotiations, Increase sales closures, Warm up leads faster

**Features:** Vision Pro support

**In-app purchases:** none


### GK Premium

[App page](https://appshunter.io/ios/app/gk-premium/id6503151126)

This app allows condominium residents to track important building activities, including notices, deliveries, fees, reservations, and unit information. It provides access to documents and news relevant to the condominium market.

**Highlights:** Activity tracking, Notices and notifications, Delivery and correspondence logs, Condominium fee payments, Reservation management, Document downloads, Unit data viewing

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

**In-app purchases:** none


## Frequently asked questions

### Is C2S free?

C2S is free to download, with no in-app purchases.

### Is GK Premium free?

GK Premium is free to download, with no in-app purchases.

### Which has better reviews, C2S or GK Premium?

C2S is rated higher. C2S averages 4.7 out of 5 from 40 ratings, while GK Premium averages 1.0 from 1 ratings.

### Do C2S or GK Premium have ads?

Neither C2S nor GK Premium shows ads.

### Which is updated more often, C2S or GK Premium?

C2S ships an update every 3 weeks, and GK Premium fortnightly. Most recently, C2S was updated on October 27, 2026 and GK Premium on October 23, 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.*