# Calc ± Smart Widgets vs Big Clock

The clearest difference is update cadence: Calc ± Smart Widgets at daily against Big Clock's weekly. On price, ads, in-app purchases 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 and Big Clock sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Calc ± Smart Widgets ships an update daily, Big Clock weekly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Calc ± Smart Widgets | Big Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (6 ratings)](https://appshunter.io/ios/app/big-clock-always-on-display/id6760553772/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 55 MB | 74 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [HKinfoway Technologies](https://appshunter.io/developer/1498599856) | [Nataliia Zarudna](https://appshunter.io/developer/1871489027) |

## What reviewers say

### 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 |


### Big Clock

[App page](https://appshunter.io/ios/app/big-clock-always-on-display/id6760553772)

Transform your device into a large, clear digital clock. Ideal for bedside tables, desks, or workouts, it offers an always-on display with customizable themes and brightness for easy readability in any environment.

**Highlights:** Fullscreen digital clock, Always-on display mode, Light and dark themes, Brightness control, Portrait and landscape support, Minimal design

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee Support | $1.99 | one-time |
| Premium | $2.99 | one-time |
| Premium + Coffee | $4.99 | one-time |
| Coffee & Croissant Support | $5.99 | one-time |
| Premium + Coffee + Croissant | $8.99 | one-time |
| Big Support | $12.99 | one-time |
| Premium + Big Support | $14.99 | one-time |


## Frequently asked questions

### Is Calc ± Smart Widgets free?

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

### Is Big Clock free?

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

### Do Calc ± Smart Widgets or Big Clock have ads?

Neither Calc ± Smart Widgets nor Big Clock shows ads.

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

Calc ± Smart Widgets ships an update daily, and Big Clock weekly. Most recently, Calc ± Smart Widgets was updated on October 24, 2026 and Big Clock on October 25, 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.*