Comparison

KOTP 2 vs IAQ Solution

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

Head to head

About

KOTP 2

Features

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KoROAD 한국도로교통공단 OTP 앱 입니다. - 최신 iPhone 기기에 대응 합니다. (구 KOTP앱 대체)

About

IAQ Solution

Features

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더하라 공기청정기와 BLE로 연동되어, 실시간으로 실내 공기질의 변화를 추적할 수 있습니다.

Screenshots

KOTP 23 screens

IAQ Solution3 screens

Verdict

The call

The clearest difference is update cadence: KOTP 2 at fortnightly against IAQ Solution's every 2 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

KOTP 2 ships an update fortnightly, IAQ Solution every 2 months. The most recent releases landed on October 11, 2026 and October 16, 2026 respectively.

Scorecard1 real difference · 5 level

KOTP 2 versus IAQ Solution: the parameters behind the verdict, then further details
Parameter	KOTP 2	IAQ Solution
Price	Free	Free
Update frequency	Fortnightly — better	Every 2 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	12.0 — better	13.0
Further details — not scored
Size	26 MB	24 MB
Age rating	4+	4+
Developer	UINS	DONG YEON KIM

In-app purchases

None

KOTP 2

No in-app purchases

None

IAQ Solution

No in-app purchases

Questions

Is KOTP 2 free?

KOTP 2 is free to download, with no in-app purchases.

Is IAQ Solution free?

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

Do KOTP 2 or IAQ Solution have ads?

Neither KOTP 2 nor IAQ Solution shows ads.

Which is updated more often, KOTP 2 or IAQ Solution?

KOTP 2 ships an update fortnightly, and IAQ Solution every 2 months. Most recently, KOTP 2 was updated on October 11, 2026 and IAQ Solution on October 16, 2026.