# SG Smart vs Calendar Clock

The clearest difference is review sentiment: SG Smart at 100% against Calendar Clock's 0%. SG Smart also leads on price (Free vs $0.99) and update cadence (every 3 weeks vs every 41 months). On ads, in-app purchases and device support there is nothing between them.

SG Smart is free to download; Calendar Clock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SG Smart ships an update every 3 weeks, Calendar Clock every 41 months. The most recent releases landed on September 19, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | SG Smart | Calendar Clock |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 41 months |
| Monetization | **Free** | Paid |
| Size | 86 MB | 4 MB |
| Requires iOS | **16.4** | 26.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SG Armaturen AS](https://appshunter.io/developer/1098660258) | [Systemiko Inc.](https://appshunter.io/developer/680630947) |

## What reviewers say

### SG Smart

[App page](https://appshunter.io/ios/app/sg-smart/id1189014836)

Control Bluetooth-enabled smart lighting devices with an intuitive app. Program dimming levels, set schedules, and create custom scenes for different atmospheres. Manage multiple locations and share settings with others.

**Highlights:** Bluetooth device control, Dimming level adjustment, Programmable timing, Custom scene creation, Group control, Multi-location management, Settings sharing

**In-app purchases:** none


### Calendar Clock

[App page](https://appshunter.io/ios/app/calendar-clock/id1451445740)

This app displays the current year, month, week, and time on a single screen with a clean design. It offers customizable theme colors and functions as a desk clock. The app disables device sleep mode while active.

**Highlights:** All-in-one screen display, Year, month, week, day, hour, minute, second, Switchable theme colors (dark, light, green, blue), Disables device sleep mode, Acts as a desk clock

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SG Smart free?

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

### Is Calendar Clock free?

Calendar Clock costs $0.99, with no in-app purchases.

### Do SG Smart or Calendar Clock have ads?

Neither SG Smart nor Calendar Clock shows ads.

### Which is updated more often, SG Smart or Calendar Clock?

SG Smart ships an update every 3 weeks, and Calendar Clock every 41 months. Most recently, SG Smart was updated on September 19, 2026 and Calendar Clock on September 10, 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.*