# Second Clock & Countdown vs QuickErrNote

The clearest difference is update cadence: QuickErrNote at every 5 days against Second Clock & Countdown's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Second Clock & Countdown sells 3 in-app purchases, starting at $0.99 per 7 days and QuickErrNote sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Second Clock & Countdown ships an update every 3 weeks, QuickErrNote every 5 days. The most recent releases landed on September 21, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Second Clock & Countdown | QuickErrNote |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/second-clock-and-countdown/id6761598609/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Freemium | — |
| Size | 15 MB | 6 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [旭东 刘](https://appshunter.io/developer/1565635060) | [HappyTimes Tech Co., Ltd.](https://appshunter.io/developer/1455774641) |

## What reviewers say

### Second Clock & Countdown

[App page](https://appshunter.io/ios/app/second-clock-and-countdown/id6761598609)

This utility app provides precise, second-level timekeeping through floating windows, dynamic island integration, and lock screen widgets. It helps users never miss important deadlines, sales, or events with customizable alarms and notifications.

**Highlights:** Floating clock window, Dynamic Island integration, Live Activities display, Lock Screen Widgets, Home Screen Widgets, Alarms and notifications, Personalization options

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $0.99 | per 7 days |
| Yearly | $4.99 | per year |
| Lifetime | $9.99 | one-time |


### QuickErrNote

[App page](https://appshunter.io/ios/app/quickerrnote-ai-error-notebook/id6801344489)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 120 Points | $0.99 | one-time |
| 400 Points | $1.99 | one-time |
| 3500 Points | $12.99 | one-time |


## Frequently asked questions

### Is Second Clock & Countdown free?

Second Clock & Countdown is free to download, with in-app purchases available.

### Is QuickErrNote free?

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

### Do Second Clock & Countdown or QuickErrNote have ads?

Neither Second Clock & Countdown nor QuickErrNote shows ads.

### Which is updated more often, Second Clock & Countdown or QuickErrNote?

Second Clock & Countdown ships an update every 3 weeks, and QuickErrNote every 5 days. Most recently, Second Clock & Countdown was updated on September 21, 2026 and QuickErrNote on September 10, 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.*