# K vs Loop for Flight Crew

The clearest difference is review sentiment: Loop for Flight Crew at 100% against K's 8%. Loop for Flight Crew also leads on rating (5.0 vs 1.5) and update cadence (every 2 days vs every 17 months). K's advantage is in-app purchases (none vs 2) and ratings volume (142 vs 4). On price, ads and device support there is nothing between them.

Both are free to download. Loop for Flight Crew sells 2 in-app purchases, starting at $9.99 per month. K asks for nothing beyond the download.

Loop for Flight Crew holds the better App Store score, 5.0 against 1.5. That said, the two scores are not equally well evidenced: K has 142 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 8% of K's written reviews are positive against 100% of Loop for Flight Crew's.

K ships an update every 17 months, Loop for Flight Crew every 2 days. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | K | Loop for Flight Crew |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (142 ratings)](https://appshunter.io/ios/app/k-eta/id1562976724/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/loop-for-flight-crew/id6811219601/reviews)** |
| Number of ratings | **142** | 4 |
| Positive reviews | 7.5% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 2 days** |
| Monetization | **Free** | Subscription |
| Size | 102 MB | 11 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [법무부](https://appshunter.io/developer/368204528) | [DENNIS MARSHALL JINKS III](https://appshunter.io/developer/6811219603) |

## What reviewers say

### K

[App page](https://appshunter.io/ios/app/k-eta/id1562976724)

Apply for your Korea Electronic Travel Authorization (K-ETA) easily and conveniently. This official government app is required for visa-free foreign visitors entering Korea, allowing you to submit necessary travel information before boarding.

**Highlights:** Apply for K-ETA, Submit travel information, Official government app, Required for visa-free entry, Convenient application process

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

**In-app purchases:** none

**What reviewers like**

- 📱 Photo upload via app instead of requiring PDF files
- ✅ Quick approval times (under 30 minutes for some users)
- 🎯 Straightforward application process when it works
- 📸 Built-in photo booth feature for selfies
- 🔄 Ability to continue applications from website on app

**What reviewers complain about**

- 🐛 Frequent crashes and freezing throughout application
- ⏱️ Extremely slow loading times and performance issues
- 💳 Payment processing failures and stuck payment screens
- 📝 Poor text input functionality and character entry issues
- 🖼️ Photo upload system is unreliable and confusing

**Reported bugs**

- App crashes when filling out information or clicking submit
- White blank screens that require app restart
- Payment button unresponsive or stuck
- Address field clears or resets unexpectedly
- Passport scanning reads fields incorrectly (especially Nationality)

**Requested features**

- Ability to select photos from library instead of taking new ones
- Clearer postal code format support for non-US countries
- Back button functionality during photo capture
- Save progress without losing all data on errors
- Better documentation and examples for Korean address format


### Loop for Flight Crew

[App page](https://appshunter.io/ios/app/loop-for-flight-crew/id6811219601)

Share your travel schedule with loved ones. This app displays flights, layovers, and show times on a calendar, offering real-time tracking and alerts for departures, arrivals, and delays. It provides clear updates on your location and estimated arrival time, all without requiring an account for recipients.

**Highlights:** Calendar display of flights and layovers, Real-time flight tracking, Departure and arrival alerts, Delay and cancellation notifications, Shareable links for family and friends, Local and home time display, Countdown widget

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Loop Monthly | $9.99 | per month |
| Loop Yearly | $99.00 | per year |


## Frequently asked questions

### Is K free?

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

### Is Loop for Flight Crew free?

Loop for Flight Crew is free to download, with in-app purchases available.

### Which has better reviews, K or Loop for Flight Crew?

Loop for Flight Crew is rated higher. K averages 1.5 out of 5 from 142 ratings, while Loop for Flight Crew averages 5.0 from 4 ratings.

### Do K or Loop for Flight Crew have ads?

Neither K nor Loop for Flight Crew shows ads.

### Which is updated more often, K or Loop for Flight Crew?

K ships an update every 17 months, and Loop for Flight Crew every 2 days. Most recently, K was updated on October 8, 2026 and Loop for Flight Crew on October 13, 2026.

---

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