# Custom Digital Clock vs Calc ± Smart Widgets

The clearest difference is in-app purchases: Custom Digital Clock at none against Calc ± Smart Widgets's 2. Custom Digital Clock also leads on iOS requirement (15.1 vs 17.0). Calc ± Smart Widgets's advantage is ads (none vs shown) and update cadence (daily vs every 9 months). On price and device support there is nothing between them.

Both are free to download. Calc ± Smart Widgets sells 2 in-app purchases, starting at $1.99 per month. Custom Digital Clock asks for nothing beyond the download.

Custom Digital Clock ships an update every 9 months, Calc ± Smart Widgets daily. The most recent releases landed on September 14, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Custom Digital Clock | Calc ± Smart Widgets |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/custom-digital-clock/id6476612907/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Daily** |
| Monetization | Ad-supported | — |
| Size | 29 MB | 55 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [tadashi endo](https://appshunter.io/developer/1605441215) | [HKinfoway Technologies](https://appshunter.io/developer/1498599856) |

## What reviewers say

### Custom Digital Clock

[App page](https://appshunter.io/ios/app/custom-digital-clock/id6476612907)

Display a stylish digital clock on your smartphone. Personalize the clock's appearance with custom coloring options to match your style.

**Highlights:** Stylish digital clock display, Customizable coloring, Smartphone integration, Personalized appearance

**Features:** macOS Compatibility

**In-app purchases:** none


### Calc ± Smart Widgets

[App page](https://appshunter.io/ios/app/calc-smart-widgets/id6745335333)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calc ± Pro Monthly | $1.99 | per month |
| Calc ± Pro Yearly | $12.99 | per year |


## Frequently asked questions

### Is Custom Digital Clock free?

Custom Digital Clock is free to download, with no in-app purchases.

### Is Calc ± Smart Widgets free?

Calc ± Smart Widgets is free to download, with in-app purchases available.

### Do Custom Digital Clock or Calc ± Smart Widgets have ads?

Custom Digital Clock shows ads; Calc ± Smart Widgets does not.

### Which is updated more often, Custom Digital Clock or Calc ± Smart Widgets?

Custom Digital Clock ships an update every 9 months, and Calc ± Smart Widgets daily. Most recently, Custom Digital Clock was updated on September 14, 2026 and Calc ± Smart Widgets on September 8, 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.*