# KLOCK vs REMAIN

The clearest difference is in-app purchases: KLOCK at none against REMAIN's 3. KLOCK also leads on update cadence (daily vs monthly) and iOS requirement (15.6 vs 26.1). On price, ads and device support there is nothing between them.

Both are free to download. REMAIN sells 3 in-app purchases, starting at $2.49 per 7 days. KLOCK asks for nothing beyond the download.

KLOCK ships an update daily, REMAIN monthly. The most recent releases landed on October 1, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | KLOCK | REMAIN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Monthly |
| Size | 102 MB | 29 MB |
| Requires iOS | **15.6** | 26.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chanwoo Seong](https://appshunter.io/developer/1135679194) | [Nahyun Park](https://appshunter.io/developer/1827041619) |

## What reviewers say

### KLOCK

[App page](https://appshunter.io/ios/app/klock-focus-pacemaker/id6758343693)

**Features:** macOS Compatibility

**In-app purchases:** none


### REMAIN

[App page](https://appshunter.io/ios/app/remain-days-left/id6793470752)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| REMAIN Pro Weekly | $2.49 | per 7 days |
| REMAIN Pro Yearly | $29.99 | per year |
| REMAIN Pro Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is KLOCK free?

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

### Is REMAIN free?

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

### Do KLOCK or REMAIN have ads?

Neither KLOCK nor REMAIN shows ads.

### Which is updated more often, KLOCK or REMAIN?

KLOCK ships an update daily, and REMAIN monthly. Most recently, KLOCK was updated on October 1, 2026 and REMAIN on October 12, 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.*