# Twilight Time vs Binary Clock

The clearest difference is in-app purchases: Twilight Time at none against Binary Clock's 1. Twilight Time also leads on iOS requirement (16.7.10 vs 26.0). Binary Clock's advantage is ads (none vs shown) and update cadence (daily vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. Binary Clock sells 1 one-off in-app purchase. Twilight Time asks for nothing beyond the download.

Twilight Time ships an update every 2 weeks, Binary Clock daily. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Twilight Time | Binary Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Daily** |
| Size | 36 MB | 7 MB |
| Requires iOS | **16.7.10** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Super, Inc.](https://appshunter.io/developer/439129974) |

## What reviewers say

### Twilight Time

[App page](https://appshunter.io/ios/app/twilight-time/id6503278537)

**Features:** macOS Compatibility

**In-app purchases:** none


### Binary Clock

[App page](https://appshunter.io/ios/app/binary-clock-standby/id6786876264)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Binary Clock Pro | $2.99 | one-time |


## Frequently asked questions

### Is Twilight Time free?

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

### Is Binary Clock free?

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

### Do Twilight Time or Binary Clock have ads?

Twilight Time shows ads; Binary Clock does not.

### Which is updated more often, Twilight Time or Binary Clock?

Twilight Time ships an update every 2 weeks, and Binary Clock daily. Most recently, Twilight Time was updated on November 8, 2026 and Binary Clock 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.*