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64
BU Score
Solid

중고나라 - 안심되는 중고거래

3.5 ✍️ Editor
✍️ BU Analytics Review

중고나라 - 안심되는 중고거래 is an Android app from Joonggonara Inc. in the Shopping category, currently rated 3.5★ across 61,338 ratings. Initial signal reads as mixed reviews — supporters praise core features while critics cite stability/value gaps.

Our BU Score puts it at 64Solid (established niche player). For a Shopping app, that means established niche player.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

📊 Performance Tracking LIVE

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idle
0%
Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
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since first record
Range:

💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 3 of 3 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Mid install base (61,338 ratings)METRIC
+$5,500
Below-average rating (3.5★)METRIC
−$1,500
Ad-supported / freemiumMETRIC
+$600
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
🔖 v8.7.3🔄 updated 3w ago📂 Shopping💰 Free

📝 About this app

Joonggonara, Korea's leading secondhand trading platform, has become even safer.

Through the "Safety Guarantee Project," Joonggonara is reducing users' concerns about fraud and creating a trustworthy trading environment.

✔️ Secure Payment – Secure payment and delivery all in one.
✔️ Compensation System – Been a victim of fraud? Up to KRW 1 million in compensation.
✔️ Self-Review – Select and verify only the essential information (currently available for some users).
✔️ Certified Seller – Trade with a highly trusted seller.

Experience the most secure secondhand trading experience today.

※ App Access Permissions Guide
In accordance with Article 22-2 (Consent to Access Permissions) of the Information and Communications Network Act, which took effect on March 23, 2017, the following information provides information on the access permissions required to use the service.

[Required Access Permissions]
- Device and App History: Check for app errors and improve usability
- Device ID: Identify and track devices, and verify services
- Wi-Fi Connection Information: Check network connections when using the app
[Optional Access Permissions]
- Storage: Create or save photos
- Location Information: Search for location information and share location information when using map features
- Camera: Take photos or videos for chats, posts, and profile creation
- Microphone: Voice recognition when recording videos

■ Optional access permissions can be consented to when using related features. Even if you decline consent, you can still use app services other than those related to the relevant features.

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
중고나라 - 안심되는 중고거래
Developer
Joonggonara Inc.
Bundle ID
com.elz.secondhandstore
App Store URL
Open in App Store
Category
Shopping
Content rating
Not found
Languages
Not found

Company

Website
Not found
Tagline
Not found
Description
Not found
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
Not found

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$1.7K/mo
Top-grossing rank
Not found
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
Not found
Phone
Not found
Contact page
Not found
About page
Not found
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.

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