Comparison

Mobile Signer vs OBDocker

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

Head to head
About

Mobile Signer

This app enables electronic digital signatures for various document formats on mobile devices. It integrates with business applications and supports advanced signature types, including time stamping and certificate validation.

Highlights
  • Electronic digital signature integration
  • Supports PDF, XML, Office, and Open Office formats
  • Generates advanced signature formats (PKCS#7/CMS, CAdES, XMLDSig, XAdES, PDF Signature, PAdES)
  • Time stamping of signatures
  • Certificate validation authority
  • Mobility signatures from smartphones and tablets
  • Client and server signing options
Features
Read full description

Mobile Signer is based on the SealSign Engine solution, from 11Paths, a Telefonica Company. SealSign Engine is an enterprise server that integrates electronic digital signature of documents in business applications and mobility devices. It is a complete, flexible and versatile signature engine: • Web service-based architecture. • Signature of any electronic document format: PDF, XML, Office, Open Office, CMS... • Generation of simple and advanced signature formats: PKCS#7/CMS and CAdES, XMLDSig and XAdES, PDF Signature and PAdES. • Allows time stamping signatures. • Incorporates a complete certificate validation authority. • Allows mobility signatures from smartphone and tablets. • Has several connectors for integrating business applications and document management. • Allows client and server signing. SealSign Engine is part of the complete electronic and biometric which fits with its different modules to the specific needs of each business environment. More information in our web page: https://www.elevenpaths.com/es/tecnologia/sealsign/index.html Terms of service: https://www.elevenpaths.com/pdfs_eulas/SealSign_EULA-2015_Evaluation.pdf

About

OBDocker

This app acts as a professional OBD2 car scanner, enabling users to diagnose, service, and customize their vehicles. It offers comprehensive diagnostic modes, real-time data monitoring, and various service functions like oil resets and battery registration.

Highlights
  • Triple-mode diagnostics (Full-Systems, Multi-Systems, Quick Scan)
  • Triple-mode live data monitoring (Health, Engine, Dash)
  • Full-cycle service functions (Emissions Pre-Check, Control Tests, Oil Reset, Battery Registration)
  • One-click car setting adjustments and retrofits
  • Supports a wide range of car brands and models
Read full description

Crafted with user-friendliness and power in mind, OBDocker is a professional OBD2 car scanner app that empowers you to diagnose, service, and customize your vehicles with ease and precision. ************************* KEY FEATURES → Triple-Mode Diagnostics ○ Full-Systems Diagnose: One-Click OE-Level full-systems diagnostics. ○ Multi-Systems Diagnose: Scan multiple systems through ECUs filtering such as TMS, SRS, ABS, TCM, BCM and many more. ○ Quick Scan: Swiftly read and clear engine fault codes to maintain a smooth drive. → Triple-Mode Live Data ○ Health Monitor: Track every systems performance by diving into real-time parameters. ○ Engine Monitor: Monitor your engine's performance. ○ Dash Monitor: Visualize your vehicle's metrics in real-time. → Full-Cycle Service ○ Emissions Pre-Check: Test your emissions and pass with confidence before your official check. ○ Control Tests: Perform EVAP Leak Test, DPF and Inducement System Reinitialization. ○ Oil Reset: Easily reset oil change reminders and maintenance lights to keep your car's records up to date. ○ Battery Registration: Register the battery replacement to notify the battery management. → On-Click Modification ○ Adjustments: Adjust different car settings and customize them by one-click. ○ Retrofits: Easily adapt additional vehicle parts after installation. ************************* OBD ADAPTERS OBDocker requires a compatible OBD adapter to work. We recommend the following for the best experience: - High Performance: Vlinker Series, OBDLink Series, MotorSure OBD Tool, Carista EVO. - Middle Performance: All genuine adapters compatible with ELM327 / ELM329, including Veepeak Series, Vgate iCar Series, UniCarScan, NEXAS, Carista, Rodoil ScanX, and more. - Low Performance (Not Recommended): Cheep Chinese clones ELM. ************************* SUPPORTED CARS OBDocker is compatible with a wide range of vehicles, covering both standard and advanced modes: - Standard Mode: Universal compatibility with OBD2 / OBD-II or EOBD vehicles worldwide. - Advanced Mode: Toyota, Lexus, Nissan, infiniti, Honda, Acura, Hyundai, Kia, Volkswagen, Audi, Skoda, SEAT, Mercedes-Benz, BMW, Mini, Porsche, Ford, Lincoln, Chevrolet, Cadillac, GMC, Buick. And still working really hard to add more… ************************* PLANS: OBDocker offers a free trial for full feature access. To unlock unlimited potential, choose from our Pro or Pro Max subscriptions. NOTE: Vehicle ECUs vary in the amount of sensors supported. This app can’t show you something, that is not provided by your car. Terms and Conditions: https://www.obdocker.com/terms-and-coditions Privacy Policy: https://www.obdocker.com/privacy-policy Apple Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Mobile Signer4 screens
OBDocker4 screens

Verdict

The call

The clearest difference is rating: OBDocker at 4.2 against Mobile Signer's 1.0. OBDocker also leads on update cadence (fortnightly vs every 3 months) and ratings volume (17 vs 1). Mobile Signer's advantage is in-app purchases (none vs 7) and iOS requirement (8.0 vs 13.0). On price, review sentiment, 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. OBDocker sells 7 in-app purchases, starting at $2.99 per month. Mobile Signer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OBDocker holds the better App Store score, 4.2 against 1.0. That said, the two scores are not equally well evidenced: OBDocker has 17 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of Mobile Signer's written reviews are positive against 47% of OBDocker's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Mobile Signer ships an update every 3 months, OBDocker fortnightly. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

Scorecard6 real differences · 4 level
Mobile Signer versus OBDocker: the parameters behind the verdict, then further details
ParameterMobile SignerOBDocker
PriceFreeFree
Rating1.0 (1 ratings)4.2 (17 ratings) — better
Positive reviews50.0% of reviews — better46.9% of reviews
Number of ratings117 — better
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS8.0 — better13.0
Further details — not scored
Size15 MB238 MB
Age rating4+4+
DeveloperFactum Identity Solutions SLMotorsure. Inc

Customer experience

Mobile Signer

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews20 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

OBDocker

All ratings17 ratings
Positive70.6%
Neutral17.6%
Negative11.8%
Written reviews32 reviews
Positive46.9%
Neutral6.3%
Negative46.9%

In-app purchases

None

Mobile Signer

No in-app purchases

7 purchases

OBDocker

Subscriptions6
  • OBD Pro (Monthly)$2.991 Month
  • OBD Pro Max (Monthly)$7.991 Month
  • OBD2 Pro (6 Months)$14.996 Months
Show 3 more
  • OBD Pro (Annual)7 Days trial$17.991 Year
  • Mechanic Access (Quarterly)$19.993 Months
  • OBD Pro Max (Annual)7 Days trial$47.991 Year
One-time1
  • OBD Pro Max (Permanent)$119.99

Questions

Is Mobile Signer free?
Mobile Signer is free to download, with no in-app purchases.
Is OBDocker free?
OBDocker is free to download, with in-app purchases available.
Which has better reviews, Mobile Signer or OBDocker?
OBDocker is rated higher. Mobile Signer averages 1.0 out of 5 from 1 ratings, while OBDocker averages 4.2 from 17 ratings.
Do Mobile Signer or OBDocker have ads?
Neither Mobile Signer nor OBDocker shows ads.
Which is updated more often, Mobile Signer or OBDocker?
Mobile Signer ships an update every 3 months, and OBDocker fortnightly. Most recently, Mobile Signer was updated on October 16, 2026 and OBDocker on October 15, 2026.

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