Comparison

GOOLOO OBD vs Signature Maker

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

Head to head
About

GOOLOO OBD

Transform your phone into a powerful car diagnostic tool. Access full system and OBD2 functions, perform maintenance services, and get detailed repair data. Connects wirelessly via Bluetooth for easy vehicle identification and reporting.

Highlights
  • Full System Diagnosis
  • Full OBD2 Functions
  • 6 Special Maintenance Functions
  • Repair Data Library
  • AutoVIN Vehicle Identification
  • Wireless Bluetooth 5.0 Connection
  • Diagnostic Report Generation
Features
Read full description

Easily link the app with your Phone using Bluetooth, transforming your devices into a smart and high-powered diagnostic tool! Packed with essential features like complete OBDII functionality, all system diagnosis, AutoVIN, automatic diagnostic reports, and more, this Bluetooth OBDII scan tool is a must-have for your car. Its versatility shines through with 6 maintenance service functions and coverage for over 80 vehicle brands, making the product a portable and adaptable auto scanner. Main Features: 1. Full System Diagnosis: Covers Engine, Transmission, Airbag, ABS, ESP, TPMS, Immobilizer, Steering, Radio, Air Conditioning, and more. 2. Full OBD2 Functions: works as an OBD2 code reader and performs all 10 modes of OBD2 testing free for life. 3. 6 Special Functions: Perform Oil Reset, Throttle Adaptation, EPB Reset, BMS Reset, and more. 4. Repair Data Library: Includes DTC Repair Guide, Technical Service Bulletin, DLC Location, Warning Light Library. 5. AutoVIN: Enables automatic vehicle identification for quick diagnosis. 6. Wireless Connection: Utilizes Bluetooth 5.0 with a range of 33 feet/10m. 7. Graphs, Values, and Dashboard-like Data Display: Ensures easy interpretation of information. 8. Generate Diagnostic Reports: Obtain detailed reports for Systems, Fault Codes, or Data Streams EULA:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Signature Maker

Create professional digital signatures quickly using AI or by drawing. Sign PDFs seamlessly, remove backgrounds, and store multiple signatures. Ideal for professionals needing to sign documents efficiently.

Highlights
  • AI-powered signature generation
  • Hand drawing signature creation
  • Font-based signature styles
  • Seamless PDF document signing
  • Automatic background removal
  • Transparent PNG downloads
  • Multiple signature storage
Features
Read full description

Signify - Professional Digital Signatures Create stunning professional signatures in seconds with the power of AI Signify is the ultimate signature maker that transforms how you sign documents. Whether you need to sign PDF documents for work or create a beautiful electronic signature for personal use, our AI signature maker delivers professional results every time. AI-Powered Signature Creation Our advanced AI signature generator creates dozens of unique signature styles from your name. Simply type your text and watch as artificial intelligence crafts elegant, handwritten-style signatures that look authentically yours. From classic scripts to modern minimalist designs, find the perfect signature that matches your personality. Multiple Creation Methods - AI Generator: Let artificial intelligence design your perfect signature - Hand Drawing: Use your finger to draw signatures naturally on screen - Font-Based: Choose from beautiful typography styles for clean, professional looks Seamless PDF Signing Transform any PDF into a signed document with precision. Our document signer lets you position signatures exactly where needed, resize them perfectly, and export professional PDFs ready for business. No more printing, scanning, or fax machines – sign now from anywhere. Professional Features - Automatic background removal for clean signatures - Transparent PNG downloads for versatile use - Precise positioning and scaling tools - Multiple signature storage in your personal library - Instant document signing workflow Perfect for Professionals Whether you're a business owner, freelancer, or anyone who signs documents regularly, Signify streamlines your workflow. Our e signature app works with contracts, forms, agreements, and any PDF that needs your signature. Premium Subscription Required AI signature generation, hand drawing signatures, font-based signatures, and PDF document signing require an active Signify Pro subscription. Why Choose Signify? - Lightning-fast signature creation - Professional results every time - No internet required after setup - Secure local storage - Intuitive, user-friendly design Stop wasting time with complicated signing apps. Download Signify today and experience the future of digital signatures. Your perfect signature is just seconds away. _______________ Privacy Policy: https://meliann.notion.site/Privacy-Policy-for-Signify-221476f8f0418002be67f9fc60e1cc39 Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

GOOLOO OBD4 screens
Signature Maker4 screens

Verdict

The call

The clearest difference is rating: Signature Maker at 4.0 against GOOLOO OBD's 3.0. GOOLOO OBD's advantage is monetization model (free with in-app purchases vs subscription) and iOS requirement (15.0 vs 17.6). On price, ratings volume, update cadence and ads 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. GOOLOO OBD sells 10 in-app purchases, starting at $4.99 per month and Signature Maker sells 2 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Signature Maker holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

UpkeepUpdate frequency

GOOLOO OBD ships an update every 3 months, Signature Maker every 4 months. Both last shipped on November 5, 2026.

Scorecard3 real differences · 6 level
GOOLOO OBD versus Signature Maker: the parameters behind the verdict, then further details
ParameterGOOLOO OBDSignature Maker
PriceFreeFree
Rating3.0 (2 ratings)4.0 (2 ratings) — better
Number of ratings22
Update frequencyEvery 3 months — betterEvery 4 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size3.1 GB19 MB
Age rating4+4+
DeveloperChangsha Angsi E-commerce Co., Ltd.Nicolas Gustavo Melian

Customer experience

GOOLOO OBD

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

Signature Maker

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%

In-app purchases

10 purchases

GOOLOO OBD

Subscriptions2
  • Monthly Auto-renewal$4.991 Month
  • Annual Auto-renewal$29.991 Year
One-time8
  • Renault Gateway 5 Tokens$147.99
  • Nissan Gateway 5 Tokens (EU only)$147.99
  • FCA Gateway 1-year Access (EU only)$229.99
Show 5 more
  • VW SFD Gateway 1-year Access$229.99
  • Renault Gateway 10 Tokens$254.99
  • Nissan Gateway 10 Tokens (EU only)$254.99
  • Renault Gateway 20 Tokens$464.99
  • Nissan Gateway 20 Tokens (EU only)$464.99
2 purchases

Signature Maker

Subscriptions2
  • Weekly Plan$7.997 Days
  • Yearly Plan$34.991 Year

Questions

Is GOOLOO OBD free?
GOOLOO OBD is free to download, with in-app purchases available.
Is Signature Maker free?
Signature Maker is free to download, with in-app purchases available.
Which has better reviews, GOOLOO OBD or Signature Maker?
Signature Maker is rated higher. GOOLOO OBD averages 3.0 out of 5 from 2 ratings, while Signature Maker averages 4.0 from 2 ratings.
Do GOOLOO OBD or Signature Maker have ads?
Neither GOOLOO OBD nor Signature Maker shows ads.
Which is updated more often, GOOLOO OBD or Signature Maker?
GOOLOO OBD ships an update every 3 months, and Signature Maker every 4 months. Most recently, GOOLOO OBD was updated on November 5, 2026 and Signature Maker on November 5, 2026.

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