UMA M9 vs QSS Stand Alone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
QSS Stand Alone
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QSS Stand Alone APP是aRacer提供賽車快排監控調整之平台, 提供完整的數據監控、功能切換......等等。 QSS Stand Alone 內建強大功能包含: 1.無須拉動離合器即可進檔 2.高精確控制切斷點火訊號 3.雙向式(推與拉)感壓式感應器 4.快排作動時間...等精細設定
Screenshots
Verdict
The clearest difference is iOS requirement: UMA M9 at 11.0 against QSS Stand Alone's 13.0. On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
UMA M9 ships an update every 6 weeks, QSS Stand Alone monthly. The most recent releases landed on October 16, 2026 and October 10, 2026 respectively.
| Parameter | UMA M9 | QSS Stand Alone |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 117 MB | 134 MB |
| Age rating | 4+ | 4+ |
| Developer | UMA RACING SDN. BHD. | ARACER SPEEDTEK INC. |
In-app purchases
UMA M9
No in-app purchases
QSS Stand Alone
No in-app purchases
