Comparison

NK vs eRacingBattery

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

Head to head
About

NK

Features
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**Function Application** - Easy install - Real-Time Tuning - Anti-Theft - 3 Mode - Calibration - Injector Tuning (-50 to 50) % - Ignition Tuning(-50 to 20) DEG - Idle Ramble - Compensate Tuning - Analyze - TPS Enrichment Tuning - Fuel start Tuning - Digital I/O - Data Log - BARO compensate

About

eRacingBattery

Features
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The eRacingBattery APP is a platform provided by aRacer for monitoring and adjusting racing battery. It offers data monitoring, function switching and data recording etc. The eRacingBattery has built-in powerful features, including: 1. Individual cell voltage and total voltage monitoring. 2. Current monitoring. 3. Over-voltage, over-current, and short circuit protection. 4. Protection status monitoring (fault codes, cell protection, balancing). 5. MOS temperature, mainboard temperature, and shunt temperature monitoring. 6. LED indicator lights (Bluetooth connection: blue flashing, Touch indication: steady blue). 7. Battery state of charge (SoC). 8. Touch wake-up function (to wake up from ECO mode). 9. ECO/BOSS mode. Please note the following: Before using the product, please carefully read this user manual and ensure that you fully understand and comply with the instructions. The company will not be held responsible for any damages resulting from improper use of the product contrary to the instructions provided in this manual. Do not place the battery near a fire source or in an environment with temperatures exceeding 60 degrees Celsius to avoid overheating or safety issues. Do not place the battery in locations where it may be splashed or exposed to water or saltwater to prevent damage or short circuits. Do not short-circuit the positive and negative terminals of the battery to avoid excessive current and battery damage. Do not reverse the positive and negative terminals of the battery with the device to prevent incorrect current flow and damage to the device. Do not disassemble or modify the battery, as this may result in battery damage, leakage, or the release of hazardous substances. Please dispose of the battery properly by handing it over to professionals. If you notice abnormally high temperature, unusual odor, or fire from the battery, immediately stop using the battery and seek professional assistance to prevent potential hazards. Unless the product itself has manufacturing defects, the company will not be held responsible for any damages caused by the product's improper use contrary to the instructions provided in this manual.

Screenshots

NK3 screens
eRacingBattery1 screens

Verdict

The call

The clearest difference is price: eRacingBattery at Free against NK's $9.99. eRacingBattery also leads on ads (none vs shown). NK's advantage is chart position (#197 vs unranked). On update cadence, in-app purchases, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

eRacingBattery is free to download; NK costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

NK ships an update every 3 months, eRacingBattery every 6 weeks. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

Scorecard3 real differences ยท 4 level
NK versus eRacingBattery: the parameters behind the verdict, then further details
ParameterNKeRacingBattery
Price$9.99Free โ€” better
Update frequencyEvery 3 monthsEvery 6 weeks โ€” better
AdsYesNo โ€” better
In-app purchasesNoNo
Best chart rank#197 โ€” betterโ€”
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.012.0
Further details โ€” not scored
Size80 MB18 MB
Age rating4+4+
DeveloperNK RACING PARTS COMPANY LIMITEDARACER SPEEDTEK INC.

In-app purchases

None

NK

No in-app purchases

None

eRacingBattery

No in-app purchases

Questions

Is NK free?
NK costs $9.99, with no in-app purchases.
Is eRacingBattery free?
eRacingBattery is free to download, with no in-app purchases.
Do NK or eRacingBattery have ads?
NK shows ads; eRacingBattery does not.
Which is updated more often, NK or eRacingBattery?
NK ships an update every 3 months, and eRacingBattery every 6 weeks. Most recently, NK was updated on October 14, 2026 and eRacingBattery on October 10, 2026.

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