# c vs SLG Sync

The clearest difference is review sentiment: SLG Sync at 100% against c's 75%. SLG Sync also leads on rating (5.0 vs 4.8). c's advantage is update cadence (every 2 months vs every 8 months) and ratings volume (20 vs 3). On price, ads, in-app purchases and monetization model there is nothing between them.

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

SLG Sync holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: c has 20 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 75% of c's written reviews are positive against 100% of SLG Sync's.

c ships an update every 2 months, SLG Sync every 8 months. The most recent releases landed on September 12, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | c | SLG Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (20 ratings)](https://appshunter.io/ios/app/c-max/id1551897463/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/slg-sync/id1672916011/reviews)** |
| Number of ratings | **20** | 3 |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Free | Free |
| Size | 21 MB | 44 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MaxLite](https://appshunter.io/developer/571000784) | [SPRING LIGHTING GROUP INC](https://appshunter.io/developer/1672916013) |

## What reviewers say

### c

[App page](https://appshunter.io/ios/app/c-max/id1551897463)

This application simplifies the installation and commissioning of lighting controls for indoor and outdoor spaces. It enables energy savings, enhances occupancy comfort, and ensures code compliance with an easy-to-use, scalable solution.

**Highlights:** Luminaire Level Lighting Controls (LLLC), Easy field installation of sensors and network nodes, Commissioning without a gateway or internet, Energy saving features, Scalable and affordable solution, Plug and play interface

**Features:** macOS Compatibility

**In-app purchases:** none


### SLG Sync

[App page](https://appshunter.io/ios/app/slg-sync/id1672916011)

Easily set up and manage wireless mesh compatible lighting fixtures, sensors, and switches. Automate lighting with schedules, control brightness and color, and manage motion sensing for individual lights or entire groups.

**Highlights:** Create light schedules, Control brightness and color temperature, Manage motion/occupancy sensing, Group lights for unified control, Configure daylight harvesting, Share control with users and admins

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is c free?

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

### Is SLG Sync free?

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

### Which has better reviews, c or SLG Sync?

SLG Sync is rated higher. c averages 4.8 out of 5 from 20 ratings, while SLG Sync averages 5.0 from 3 ratings.

### Do c or SLG Sync have ads?

Neither c nor SLG Sync shows ads.

### Which is updated more often, c or SLG Sync?

c ships an update every 2 months, and SLG Sync every 8 months. Most recently, c was updated on September 12, 2026 and SLG Sync on September 20, 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.*