Comparison

aRacerOBD vs KOSO Magic

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

Head to head

About

aRacerOBD

Features

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The functions include: 1. Engine data monitoring from ECU in real time. 2. Shows and resets engine DTC codes in the ECU. 3. Component test function for inspecting the component activation. (Injector, Fuel pump, ignition coil, etc.) 4. Shows the ECU information. (Hardware version, software version, etc.)

About

KOSO Magic

Features

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KOSO Magic is a tool used through a mobile app to adjust KOSO's motorcycle turn signals. It connects via Bluetooth and is used to adjust the turn signal flashing frequency, interval, flashing sound effects, and volume. By connecting to the device's network, you can also upload custom sound files to use as flashing sound effects.

Screenshots

aRacerOBD4 screens

KOSO Magic4 screens

Verdict

The call

The clearest difference is in-app purchases: aRacerOBD at none against KOSO Magic's 4. aRacerOBD also leads on iOS requirement (10.0 vs 15.0). KOSO Magic's advantage is update cadence (every 3 weeks vs every 8 months). On price, ads 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. KOSO Magic sells 4 one-off in-app purchases. aRacerOBD asks for nothing beyond the download.

UpkeepUpdate frequency

aRacerOBD ships an update every 8 months, KOSO Magic every 3 weeks. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.

Scorecard3 real differences · 3 level

aRacerOBD versus KOSO Magic: the parameters behind the verdict, then further details
Parameter	aRacerOBD	KOSO Magic
Price	Free	Free
Update frequency	Every 8 months	Every 3 weeks — better
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	10.0 — better	15.0
Further details — not scored
Size	17 MB	110 MB
Age rating	4+	4+
Developer	ARACER SPEEDTEK INC.	Tong Yah Electronic Technology Co., Ltd.

In-app purchases

None

aRacerOBD

No in-app purchases

4 purchases

KOSO Magic

One-time4

30 KOSO COINS$0.99
60 KOSO COINS$1.99
120 KOSO COINS$3.99

Show 1 more

240 KOSO COINS$6.99

Questions

Is aRacerOBD free?

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

Is KOSO Magic free?

KOSO Magic is free to download, with in-app purchases available.

Do aRacerOBD or KOSO Magic have ads?

Neither aRacerOBD nor KOSO Magic shows ads.

Which is updated more often, aRacerOBD or KOSO Magic?

aRacerOBD ships an update every 8 months, and KOSO Magic every 3 weeks. Most recently, aRacerOBD was updated on October 10, 2026 and KOSO Magic on October 3, 2026.