Comparison

레일휘슬 vs iSIGN+ PASS v2

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

About

레일휘슬

Features

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스마트폰을 통해 한국철도공사의 부패행위, 행동강령 위반, 청탁금지법 위반, 방만경영, 하도급 불법운영을 신고하는 곳입니다.

About

iSIGN+ PASS v2

Streamline your logins with secure, simple authentication. Choose from Face ID, fingerprint, PIN, or QR codes instead of complex passwords. Track your login history and manage connected services for enhanced security.

Highlights

Simple authentication methods
Face ID and fingerprint login
PIN, pattern, OTP, QR support
Login history tracking
Service list management
Secure login management

Features

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● Easily log in with the app · You can log in with simple authentication through the app, instead of the cumbersome ID/PW. · You can select an authentication method such as Face ID, fingerprint, PIN, pattern, number matching, OTP, QR or certificate. ● Manage login safely · You can check your login history and service list. · You can view and copy OTP codes right from the main screen. · Dark Mode is supported. Penta Security Inc.

Screenshots

레일휘슬4 screens

iSIGN+ PASS v24 screens

Verdict

The call

The clearest difference is update cadence: iSIGN+ PASS v2 at every 2 months against 레일휘슬's every 8 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

레일휘슬 ships an update every 8 months, iSIGN+ PASS v2 every 2 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

Scorecard1 real difference · 7 level

레일휘슬 versus iSIGN+ PASS v2: the parameters behind the verdict, then further details
Parameter	레일휘슬	iSIGN+ PASS v2
Price	Free	Free
Positive reviews	—	16.7% of reviews
Update frequency	Every 8 months	Every 2 months — better
Ads	No	No
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPad, iPod — better	iPhone, iPod
Requires iOS	15.0	15
Further details — not scored
Size	23 MB	39 MB
Age rating	4+	4+
Developer	한국철도공사	Penta Security Inc.

In-app purchases

None

레일휘슬

No in-app purchases

None

iSIGN+ PASS v2

No in-app purchases

Questions

Is 레일휘슬 free?

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

Is iSIGN+ PASS v2 free?

iSIGN+ PASS v2 is free to download, with no in-app purchases.

Do 레일휘슬 or iSIGN+ PASS v2 have ads?

Neither 레일휘슬 nor iSIGN+ PASS v2 shows ads.

Which is updated more often, 레일휘슬 or iSIGN+ PASS v2?

레일휘슬 ships an update every 8 months, and iSIGN+ PASS v2 every 2 months. Most recently, 레일휘슬 was updated on November 3, 2026 and iSIGN+ PASS v2 on November 7, 2026.