# SRC LRC UBI vs 태권프렌즈(TKFriends)

The clearest difference is price: 태권프렌즈(TKFriends) at Free against SRC LRC UBI's $8.99. 태권프렌즈(TKFriends) also leads on iOS requirement (10.0 vs 17.0). SRC LRC UBI's advantage is review sentiment (100% vs 75%). On update cadence, ads, in-app purchases and device support there is nothing between them.

태권프렌즈(TKFriends) is free to download; SRC LRC UBI costs $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SRC LRC UBI ships an update every 2 months, 태권프렌즈(TKFriends) every 6 weeks. The most recent releases landed on September 23, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | SRC LRC UBI | 태권프렌즈(TKFriends) |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/src-lrc-ubi/id475220920/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **100.0% of reviews** | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Paid | **Free** |
| Size | 5 MB | 16 MB |
| Requires iOS | 17.0 | **10.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ralf Goritz](https://appshunter.io/developer/418069908) | [heungwan kang](https://appshunter.io/developer/1519018479) |

## What reviewers say

### SRC LRC UBI

[App page](https://appshunter.io/ios/app/src-lrc-ubi/id475220920)

Prepare for your radio operator exams with intelligent learning systems. Features include flashcards, spoken content, detailed statistics, and official question catalogs for SRC, LRC, and UBI certifications. Study offline with synchronized devices.

**Highlights:** Leitner flashcard system, Spoken radio texts and vocabulary (TTS), Intelligent 'Uncertain Questions' mode, Detailed graphical statistics, Official exam question catalogs (SRC, LRC, UBI), iCloud device synchronization, Offline functionality

**In-app purchases:** none


### 태권프렌즈(TKFriends)

[App page](https://appshunter.io/ios/app/tkfriends/id1527748787)

This app provides a comprehensive management system for Taekwondo dojangs, offering features for both instructors and students' parents. It simplifies attendance tracking, communication, payment, and access to student information.

**Highlights:** Attendance tracking and notifications, Vehicle pick-up/drop-off alerts, Dojang news and announcements, Student progress and payment status, Direct communication with instructors, Photo album and profile management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SRC LRC UBI free?

SRC LRC UBI costs $8.99, with no in-app purchases.

### Is 태권프렌즈(TKFriends) free?

태권프렌즈(TKFriends) is free to download, with no in-app purchases.

### Do SRC LRC UBI or 태권프렌즈(TKFriends) have ads?

Neither SRC LRC UBI nor 태권프렌즈(TKFriends) shows ads.

### Which is updated more often, SRC LRC UBI or 태권프렌즈(TKFriends)?

SRC LRC UBI ships an update every 2 months, and 태권프렌즈(TKFriends) every 6 weeks. Most recently, SRC LRC UBI was updated on September 23, 2026 and 태권프렌즈(TKFriends) on June 1, 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.*