# Big Clock vs NanoLuna

The clearest difference is ads: NanoLuna at none against Big Clock's shown. NanoLuna also leads on update cadence (every 2 weeks vs every 3 months). Big Clock's advantage is iOS requirement (18.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Big Clock sells 3 in-app purchases, starting at $4.99 per 7 days and NanoLuna sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Big Clock ships an update every 3 months, NanoLuna every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Big Clock | NanoLuna |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (4 ratings)](https://appshunter.io/ios/app/big-clock-digital-display/id1553856417/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 66 MB | 11 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kevin Ghori](https://appshunter.io/developer/1639082610) | [恒俭 董](https://appshunter.io/developer/947356968) |

## What reviewers say

### Big Clock

[App page](https://appshunter.io/ios/app/big-clock-digital-display/id1553856417)

This utility app displays the current day, time, and date in a large, full-screen digital format. It offers customization options for clock digit color and includes integrated alarm, timer, and stopwatch functionalities with advanced settings like repetition and lap tracking.

**Highlights:** Full-screen digital clock display, Customizable digit colors, Multiple alarm settings, Countdown timer, Stopwatch with lap feature, Display day and date

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Big Digital Clock Weekly Plan | $4.99 | per 7 days |
| Big Digital Clock Monthly Plan | $9.99 | per month |
| Big Digital Clock Yearly Plan | $49.99 | per year |


### NanoLuna

[App page](https://appshunter.io/ios/app/nanoluna/id6759160468)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime | $0.99 | one-time |


## Frequently asked questions

### Is Big Clock free?

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

### Is NanoLuna free?

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

### Do Big Clock or NanoLuna have ads?

Big Clock shows ads; NanoLuna does not.

### Which is updated more often, Big Clock or NanoLuna?

Big Clock ships an update every 3 months, and NanoLuna every 2 weeks. Most recently, Big Clock was updated on November 3, 2026 and NanoLuna on October 31, 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.*