Sullivan+ vs iPDF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sullivan+
This visual assistance app uses AI and your smartphone camera to describe surroundings, read text, identify faces, and find objects. It offers features like currency recognition and color identification to enhance accessibility for the blind and visually impaired.
- AI object and scene description
- Text recognition and reading
- Face recognition with age/gender
- Object finder with voice guidance
- Currency denomination announcement
- Color recognition
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Sullivan Plus is a visual assistance app provided by TUAT for information accessibility for the blind and low vision, and provides information recognized through the smartphone camera to users who need visual assistance. Sullivan Plus X SKtelecom Please support the warm collaboration between Sullivan Plus and SKtelecom! Experience Sullivan Plus with SKtelecom's diverse and powerful AI technologies! ■ AI Facecan that recognizes age, gender, and facial expressions Register your face The face registration function has been added to the face recognition mode. You can register the face of anyone you want, and find the face of the person you registered in a photo. Object Finder The object-finding feature has been added. Select the object you want to find from the list and scan your surroundings. The app will notify you with vibrations and voice prompts. PDF Quota Donation Donate your unused PDF Reader quota to help others who need it. By donating, users who have exhausted their PDF quota for the day will be able to read additional image-based PDF files based on the donated amount. If you’ve already used up your quota for the day, you can request donations. Other users can see your donation request message and choose to participate. :) Currency Recognition Sullivan Plus announces the denomination of bills via voice. (Supported currencies: Korean Won, US Dollar, Euro, Japanese Yen) Q&A Board The Q&A Board has been added for users who couldn’t resolve questions or share tips due to the lack of a communication space. If someone comments on your post, you’ll receive a notification so you can check it instantly! [Key Features] 1. AI Mode 2. Automatic Image Description 3. Text Recognition 4. Face Recognition ■ Curious about your surroundings? AI Mode - Identifies objects around you and generates descriptive sentences for the scene. ■ Struggling to read letters on mail, magazines, or newspapers? Text Recognition - Detects text and announces it audibly. Point your camera at the area with the text you want to recognize. ■ Wondering about someone you just met? Face Recognition - Identifies the person captured on camera and provides their age and gender. ■ Automatically recognize your surroundings. Automatic Image Description - No need to press the shutter button. The app automatically detects the environment and provides voice guidance. ■ Looking for the location of objects around you? Object Finder - Select the object you’re looking for, and the app will guide you to its location using voice prompts. ■ Having trouble finding the right color for your outfit in the morning? Color Recognition - Supports single-color mode to identify the color at the center of the screen and full-screen mode to identify dominant colors across the entire view. ■ Manage Samsung Electronics home appliances more smartly! Consumer Electronics Mode - Connect the QR code of Samsung Electronics home appliances to the SmartThings app to easily control products, check their status, access manuals, and request services. ■ Assisting those with low vision, not just total blindness. Magnifier - The camera's zoom function lets you enlarge or reduce objects or text and supports color inversion. [Permissions Required] The camera is used to capture images so the app can describe objects, text, and surroundings aloud for users who are blind or have low vision. Camera - Controls the camera and captures photos using the camera API. Storage - Temporarily stores captured images and deletes them after the analysis is complete. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
iPDF
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iPDF — All-in-One PDF Tools Welcome to iPDF, the fastest and most intuitive document management app designed to handle all your PDF needs on the go. Whether you need to sign an urgent contract, compress a heavy file for an email, or turn photo scans into a clean PDF, iPDF delivers professional results with just a few taps. Say goodbye to complicated desktop software. iPDF puts a powerful suite of PDF tools right in your pocket! KEY FEATURES Images & Camera to PDF · Photos to PDF: Convert your photos and gallery images into high-quality PDF documents effortlessly. · Instant Scan & Convert: Snap a picture of a document, receipt, or paper form using your camera, and iPDF will instantly convert it into a crisp, ready-to-share PDF. Organize & Edit Pages · Merge PDFs: Combine multiple PDF files, documents, and images into one organized file. · Split PDF: Easily divide a large PDF into separate files or extract specific page ranges. · Remove Pages: Delete unwanted pages from any PDF document with a single tap. · Rotate Pages: Fix page orientation by rotating individual pages or the entire document. · Reorder Pages: Drag and drop pages to rearrange your document in the exact order you need. Optimize & Shrink · Compress PDF: Reduce large file sizes instantly without sacrificing document quality. Perfect for meeting email attachment limits and saving storage space. Sign & Protect · Sign PDF: Create your personal digital signature to sign contracts, agreements, and forms on the fly. · Lock PDF: Add password protection to encrypt sensitive documents and keep your private data safe. · Unlock PDF: Remove password restrictions from your authorized PDF files for quick access. WHY CHOOSE iPDF? · Fast & Efficient: Process complex PDF files instantly without lag. · Clean & Intuitive: Designed specifically for iOS with a modern, distraction-free interface. · 100% Secure: Your documents are processed safely on your device to ensure total privacy. · Easy Sharing: Export and send your edited PDFs via Email, AirDrop, Files, or messaging apps in one tap. Master your documents today with iPDF! PRIVACY POLICY https://legal.sparkleafapps.com/ipdf/privacy-policy.html TERMS OF USE https://legal.sparkleafapps.com/ipdf/terms-of-use.html
Screenshots
Verdict
The clearest difference is update cadence: iPDF at every 3 weeks against Sullivan+'s every 2 months. On price, ads, in-app purchases 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
Both are free to download. Sullivan+ sells 3 in-app purchases, starting at $9.99 per month and iPDF sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Sullivan+ ships an update every 2 months, iPDF every 3 weeks. The most recent releases landed on October 20, 2026 and October 16, 2026 respectively.
| Parameter | Sullivan+ | iPDF |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (22 ratings) — better | — |
| Positive reviews | 85.7% of reviews | — |
| Number of ratings | 22 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 136 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | TUAT Inc. | Artem Teluschenko |
In-app purchases
Sullivan+
- Pro$9.991 Month
- Pro Usage 5,000 Top-Up$2.99
- Pro Usage 15,000 Top-Up$6.99
iPDF
- iPDF Premium - Weekly (3 Days Free)3 Days trial$2.997 Days
- iPDF Premium - Yearly$24.991 Year









