Comparison

SL vs D

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

Head to head
About

SL

Features
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The app is designed for use with RAINBOW CAR AUDIO dsp amp SL-P0855A. This app gives you tools needed to fine tune virtually every aspect of your car audio system. Whether you ara a professional installer or an obsessive audiophile, this app allows you to realize the true potential of DSP tuning tools. Features: 31 bands EQ parametric / grahpic equalization per channel. Phase correction. Crossover type, frequency and slope adjustments. Independent input and output level controls.Time Delay. Input summing and linking. 6 customizable presets.

About

D

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D-SYNC ECU is the ultimate calibration platform for Mercedes-AMG and Mercedes-Benz owners who demand more from their vehicles. Unlock your car's full potential — D-SYNC delivers a seamless, wireless tuning experience straight from your phone. No laptop, no cables, no dealer. SUPPORTED ENGINES • M177 4.0L V8 BiTurbo — C63 S, E63 S, S63, GT 63 S, GLE 63 S, GLC 63 S, and more • M178 4.0L V8 BiTurbo — AMG GT / GT S / GT C / GT R / Black Series • M276 3.0L V6 BiTurbo — C43, E43, E450, GLC43, GLE43, S400, and more • M157 / M278 5.5L & 4.7L V8 BiTurbo — S63, CLS63, GLE63, GLS63, ML63, E63, and more • M133 2.0L Turbo — CLA45, A45, GLA45 (Gen 1 / 1.5) • M256 3.0L Turbo inline-six — E53, CLS53, GT53, GLE53 and 450 models PLUS TRANSMISSION TUNING AND CPC TUNING • 9G-TRONIC (VGS-NAG3) — write calibrations directly to the 9-speed transmission controller • CPC NG - write customized calibrations to a replaced CPC NG module. Compatible control units: Bosch MED17.7.5 Ā· MED17.7 V6LA Ā· MED40AMG Ā· MED17.7 (M157/M278) Ā· Bosch MG1 (M256) Ā· VGS-NAG3 (9G) Ā· CPCNG HIGH-SPEED DATA LOGGING • Ready-made logging presets per engine, plus build-your-own profiles (up to 20 channels) • Boost, intake temps, knock, AFR/lambda, timing and 70+ parameters in real time • Auto-records your pull and saves it as a CSV tagged by VIN, date and time • Powerful viewer — multi-channel overlay, drag-to-read cursor, time-axis zoom and stacked view • One-tap cloud sharing so your tuner can refine the calibration LIVE HUD Turn your phone into a full-screen instrument cluster while you log. Big, glanceable gauges with per-cylinder knock and misfire, camshaft timing, and automatic over-limit alerts — portrait or landscape, with dedicated layouts per engine. Display only: it never touches your recording. EXHAUST POP & BANG TUNER (AMG only) Dial in custom exhaust pops & bangs on OTS tunes — presets plus advanced control, applied at flash. DTC DEACTIVATION Deactivate diagnostic trouble codes across all firmware versions, applied at flash. VEHICLE CODING (beta) Activate hidden features and adjust factory coding — including W205 brake/model coding and AMG 63 exhaust-flap coding. Supported coding is listed at d-syncworks.com. CONTROL-UNIT REPLACEMENT & CLONING (beta) Clone-write the next-generation Common Powertrain Controller (CPC NG), including control-unit replacement. AIRMATIC SUSPENSION CONTROL (beta) Dial in ride height on supported AIRMATIC chassis — AMG GLE/GLS (W167), S-Class (W222) and E-Class (W213). Save your favorite stances and recall them in a tap. ON-BOARD DIAGNOSTICS Read and clear fault codes with plain-language descriptions, right from the app. BUILT FOR AMG Every detail is engineered around the Mercedes platform — automatic ECU identification, per-vehicle configuration, and a tuner ecosystem that speaks your language. WHAT YOU NEED • D-SYNC D1 Bridge — WiFi hardware adapter (sold separately at d-syncworks.com) • A supported Mercedes-AMG / Mercedes-Benz listed above • A D-SYNC account and license Questions or support? Visit d-syncworks.com Note: M256 flashing requires a one-time bench unlock before wireless flashing is available. ** This racing product is for competition, closed-course use only. *** Use of this software may void portions of your vehicle's factory warranty. Some items may not be legal for on-highway use. D-SYNC makes no guarantees as to the legality of any parts used on highway vehicles and accepts no responsibility for compliance with your vehicle's factory warranty.

Screenshots

SL4 screens
D4 screens

Verdict

The call

The clearest difference is iOS requirement: SL at 9.0 against D's 15.0. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference Ā· 5 level
SL versus D: the parameters behind the verdict, then further details
ParameterSLD
PriceFreeFree
Update frequency—Every 5 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS9.0 — better15.0
Further details — not scored
Size34 MB30 MB
Age rating4+4+
DeveloperRainbow Audio GmbHLUN LIU

In-app purchases

None

SL

No in-app purchases

None

D

No in-app purchases

Questions

Is SL free?
SL is free to download, with no in-app purchases.
Is D free?
D is free to download, with no in-app purchases.
Do SL or D have ads?
Neither SL nor D shows ads.

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