# J2K Browser vs StandBy Clock

The clearest difference is in-app purchases: J2K Browser at none against StandBy Clock's 3. J2K Browser also leads on device support (4 vs 2) and iOS requirement (15.5 vs 17.0). StandBy Clock's advantage is update cadence (every 6 days vs every 143 months). On price there is nothing between them.

Both are free to download. StandBy Clock sells 3 in-app purchases, starting at $1.99 per 7 days. J2K Browser asks for nothing beyond the download.

J2K Browser ships an update every 143 months, StandBy Clock every 6 days. The most recent releases landed on May 16, 2026 and August 12, 2026 respectively.

## The numbers

| Metric | J2K Browser | StandBy Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (6 ratings)](https://appshunter.io/ios/app/standby-clock-custom-widgets/id6450166379/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | Every 143 months | **Every 6 days** |
| Monetization | — | Ad-supported |
| Size | 30 MB | 23 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Jae Gwang Lee](https://appshunter.io/developer/567390705) | [逸文 周](https://appshunter.io/developer/1484299344) |

## What reviewers say

### J2K Browser

[App page](https://appshunter.io/ios/app/j2k-browser/id567390702)

**In-app purchases:** none


### StandBy Clock

[App page](https://appshunter.io/ios/app/standby-clock-custom-widgets/id6450166379)

Transform your iPhone into a personalized bedside display with over 100 customizable widgets. Show time, calendar, battery, photos, and more. Simple to use, just choose, customize, and add to your StandBy screen.

**Highlights:** 100+ customizable widgets, Analog and digital clock options, Calendar and dual time zone display, Countdown timers for events, Photo and GIF widgets, Customizable theme colors and styles

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $1.99 | per 7 days |
| Annual Pro | $6.99 | per year |
| StandBy Clock Lifetime | $14.99 | one-time |


## Frequently asked questions

### Is J2K Browser free?

J2K Browser is free to download, with no in-app purchases.

### Is StandBy Clock free?

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

### Which is updated more often, J2K Browser or StandBy Clock?

J2K Browser ships an update every 143 months, and StandBy Clock every 6 days. Most recently, J2K Browser was updated on May 16, 2026 and StandBy Clock on August 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*