NK vs UMA M9
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NK
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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
UMA M9
This application connects to a specific engine control unit (ECU) to monitor engine data, read diagnostic trouble codes, and perform various engine tuning adjustments. It also allows for tuning map sharing and accessing cloud-based ECU firmware and calibration files.
- Engine data monitoring
- Malf-code reading
- Fuel adjustment
- Engine tuning
- Tuning map sharing
- Cloud ECU firmware access
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M9 APP supports UMA M9 ECU. The main functions are as below: 1. Engine data monitor 2. Malf-code read 3. Engine tuning: 3.1 Fuel Adj., Fuel Acc. 3.2 Fuel Temperature Compensation 3.3 IG, 3.4 Idle RPM, RPM Limit, VVA Control, Speed Gain, Coolant Fan 3.5 Auto Tune, 3.6 Idle Lope, Backfire 4. Tuning map sharing 5. QuickBurn: Cloud data of ECU firmware and calibration file 6. Function upgrade: Choosing and purchasing the upgrated function by user.
Screenshots
Verdict
The clearest difference is price: UMA M9 at Free against NK's $9.99. UMA M9 also leads on ads (none vs shown). On update cadence, in-app purchases, device support and iOS requirement 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
UMA M9 is free to download; NK costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
NK ships an update every 3 months, UMA M9 every 6 weeks. The most recent releases landed on August 28, 2026 and September 11, 2026 respectively.
| Parameter | NK | UMA M9 |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Every 6 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 80 MB | 117 MB |
| Age rating | 4+ | 4+ |
| Developer | NK RACING PARTS COMPANY LIMITED | UMA RACING SDN. BHD. |
In-app purchases
NK
No in-app purchases
UMA M9
No in-app purchases
