# 404Log vs K

The clearest difference is update cadence: 404Log at every 6 days against K's every 5 months. 404Log also leads on iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

404Log ships an update every 6 days, K every 5 months. The most recent releases landed on September 20, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | 404Log | K |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (18 ratings)](https://appshunter.io/ios/app/404log-crush-diary/id6742832199/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 5 months |
| Monetization | Ad-supported | — |
| Size | 67 MB | 24 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Yoonjik Cho](https://appshunter.io/developer/1699502339) | [Suyong Choi](https://appshunter.io/developer/1799869670) |

## What reviewers say

### 404Log

[App page](https://appshunter.io/ios/app/404log-crush-diary/id6742832199)

This app helps you track your emotions and analyze your romantic feelings over time. Log special moments, identify attraction signals, and review past crushes to understand your love life patterns. It's a personal space to reflect on your emotional journey.

**Highlights:** Love Frequency & Attraction Signals, Special Moments Calendar, Emotion Chart & Crush Trends, Ranking & Past Crush History, Reconnection Frequency, Relationship Mode Tracking

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

**In-app purchases:** none


### K

[App page](https://appshunter.io/ios/app/k-buddy/id6748117592)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 404Log free?

404Log is free to download, with no in-app purchases.

### Is K free?

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

### Do 404Log or K have ads?

Neither 404Log nor K shows ads.

### Which is updated more often, 404Log or K?

404Log ships an update every 6 days, and K every 5 months. Most recently, 404Log was updated on September 20, 2026 and K on September 9, 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.*