Comparison

MultiGauge vs OBD2 Gauges

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

Head to head
About

MultiGauge

This application connects to specific hardware to display real-time sensor data from your vehicle on your smartphone. Monitor vital engine parameters like air-fuel ratio, temperature, and pressure for performance tuning and diagnostics.

Highlights
  • Real-time sensor data display
  • Bluetooth LE connectivity
  • Supports multiple sensor modules
  • Visualizes engine parameters
  • Compatible with PLX Devices hardware
Read full description

MultiGauge App is designed to function with the PLX Devices Multi Gauge Link hardware interface. The Multi Gauge Link includes a Bluetooth LE wireless communication protocol designed to work seamlessly with this app. PLX Devices sensor modules can be connected in a daisy-chain and the Multi Gauge Link is connected to the last sensor module in the chain to transmit sensor data to your smart phone for visual display. Compatible Hardware: Multi Gauge Link SM-PRO - Fluid Temp, Exhaust Gas Temp, Air Intake Temp, Fluid Pressure, Vac/Boost SM-AFR - Wideband Air/Fuel Ratio Sensor Module Compatible Hardware Combinations: SM-AFR + MultiGauge Link. SM-Vac/Boost + MultiGauge Link. SM-AFR + SM-Vac/Boost + MultiGauge Link. SM-PRO + SM-AFR + MultiGauge Link SM-PRO + MultiGauge Link SM-Pro is a combined sensor module for accurately measuring Vac/Boost, Exhaust Gas Temperature, Air Intake Temperature, Fluid (Oil/Water) Temperature, and Fluid Pressure. Includes genuine Honeywell 3Bar Vac/Boost sensor (built-in), wires/connectors for digital interface with DM-6, DM-100/200, MultiGauge Link. Also includes analog outputs for interfacing with 3rd party ECU's and data loggers. The SM-AFR Gen4  Sensor Module is a tuner grade Bosch LSU 4.9 wideband oxygen sensor controller with digital/analog outputs for 3rd interface. Accurately reads the air/fuel ratio of any internal combustion from 0.68 Lambda to 1.36 Lambda (10:1 - 20:1 AFR *Gasoline). Fully plug and play, no sensor calibration is required. Compatible with Gasoline, Diesel, Ethanol, Methanol, E85, LPG, CNG. Accurate to 0.1AFR with less than 100mS reaction time from rail to rail. Advanced sensor health monitoring, displays oxygen sensor health and reaction time when connected to DM-6 gauge or to your smartphone via the Multi Gauge Link interface. The SM-Vac/Boost Sensor Module accurately measures the vacuum pressure and boost pressure of any intake manifold. This is ideal for turbo and supercharged applications where monitoring the intake pressure is vital. The Vacuum / Boost Sensor Module can also be used as a stand alone unit capable of interfacing with 3rd party hardware where both the digital output and the analog output are available simultaneously. Its measurement range is 30.5 inHg to 30 PSI or 760 mmHg to 2.11 Kg/cm^2. Connect this sensor module via the Multi Gauge Link interface for a boost gauge on your smartphone. For more information visit www.plxdevices.com

About

OBD2 Gauges

Features
Read full description

OBD2 Gauges connects to your vehicle's OBD2 port via Bluetooth and displays real-time engine data as beautiful, customizable gauges. Features: - AI Vehicle Health: explanations of telemetry and trouble codes, recommended checks, and watch points - Saved health reports you can revisit offline - AI Lite: on-device analysis on compatible devices; AI Pro: on-device plus cloud analysis with explicit consent - Realistic gauge materials, four additional bezel finishes, and ten bezel shapes - Real-time speed, RPM, boost/vacuum, oil temperature, water temperature, intake air temperature, and fuel level gauges - Multiple gauge themes inspired by iconic vehicles: Supra Stock, Supra TRD, Nismo, Audi RS, G35 Rev-Up, and more - 100+ OBD2 parameters supported - Clean, modern interface with dark and light modes - Works with any ELM327-compatible Bluetooth OBD2 adapter - Customizable gauge layouts — single, dual, quad, or full dashboard views - On-device AI keeps analysis on your device. Optional cloud AI sends a telemetry summary to Google only after your consent. Connect your OBD2 Bluetooth adapter, pair it with your device, and launch OBD2 Gauges to see your engine data come alive. Requires an ELM327-compatible Bluetooth Low Energy (BLE) OBD2 adapter and a vehicle with an OBD2 port (1996+ model year). Optional Subscription - Remove Ads (Monthly): auto-renewing subscription that removes all ads while active. Cancel anytime in Settings → Apple ID → Subscriptions. - Remove Ads (Lifetime): one-time purchase that removes all ads permanently. - AI Lite: monthly or lifetime access to ad-free, on-device AI Health on compatible devices. - AI Pro: monthly or lifetime access to ad-free AI Health with cloud analysis when on-device AI is unavailable. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Terms of Use: https://www.lightcycleconsulting.com/terms-of-service Privacy Policy: https://www.lightcycleconsulting.com/privacy-policy AI Health requires an AI Lite or AI Pro purchase. On-device AI depends on device and model availability. Cloud AI requires internet access, consent, and AI Pro, with up to 10 cloud analyses per 24-hour window. AI guidance is informational and does not replace a qualified mechanic.

Screenshots

MultiGauge4 screens
OBD2 Gauges4 screens

Verdict

The call

The clearest difference is in-app purchases: MultiGauge at none against OBD2 Gauges's 2. MultiGauge also leads on iOS requirement (12.1 vs 16.0). OBD2 Gauges's advantage is update cadence (every 3 days vs fortnightly). 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. OBD2 Gauges sells 2 in-app purchases, starting at $3.99 per month. MultiGauge asks for nothing beyond the download.

UpkeepUpdate frequency

MultiGauge ships an update fortnightly, OBD2 Gauges every 3 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
MultiGauge versus OBD2 Gauges: the parameters behind the verdict, then further details
ParameterMultiGaugeOBD2 Gauges
PriceFreeFree
Rating1.0 (4 ratings) — better—
Positive reviews16.7% of reviews—
Number of ratings4 — better—
Update frequencyFortnightlyEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.1 — better16.0
Further details — not scored
Size10 MB52 MB
Age rating4+17+
DeveloperPLX Devices, INC.Edward Williams

In-app purchases

None

MultiGauge

No in-app purchases

2 purchases

OBD2 Gauges

Subscriptions1
  • Remove Ads (Monthly)$3.991 Month
One-time1
  • Remove Ads (Lifetime)$24.99

Questions

Is MultiGauge free?
MultiGauge is free to download, with no in-app purchases.
Is OBD2 Gauges free?
OBD2 Gauges is free to download, with in-app purchases available.
Do MultiGauge or OBD2 Gauges have ads?
Neither MultiGauge nor OBD2 Gauges shows ads.
Which is updated more often, MultiGauge or OBD2 Gauges?
MultiGauge ships an update fortnightly, and OBD2 Gauges every 3 days. Most recently, MultiGauge was updated on October 24, 2026 and OBD2 Gauges on October 25, 2026.

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