Sudden Call vs Image to PDF.
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sudden Call
This app provides a fake incoming call to help you exit unwanted conversations or meetings. It features a simple interface with preset and scheduled call options for quick and easy use. Designed purely for entertainment, it does not make or receive real phone calls.
- Fake incoming calls
- Exit unwanted conversations
- Simple one-screen design
- Easy presets
- Scheduled calls
- Entertainment purposes only
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***This app is not intended to make or receive real phone calls. It's for entertainment purposes only!*** Sudden Call is the app you dreamed about at least once in your life! Need to get out of unwanted discussion or meeting? Sudden Call will help you do just that! Simple one-screen design will make it a breeze for you to use. Easy presets will let you get a fake call to your phone instantly, within short period of time, or with scheduled time. Sudden Call does not contain any hidden ads or banners. If you have problems or are not completely satisfied with Sudden Call, please don't rush to leave bad feedback. Just contact us through our Support button in the Info screen and we will help you to solve the problem.
Image to PDF.
Easily convert your photos and images into PDF documents in just a few steps. Import from various sources, edit settings, and share or print your created PDFs. Compress files to reduce size for easier sharing.
- Convert photos to PDF
- Import from iCloud, Files, gallery
- Supports multiple image formats
- Edit and manage PDF files
- Compress PDF files
- Work offline
- Share and print PDFs
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Photo to PDF is the ultimate converter app for you to easily and quickly convert pictures to PDF. Create PDF file from your image in 3 simple steps: 1. Select photos or scan your photos with camera 2. Edit settings and it will automatically convert your photo to PDF 3. Share and print your PDF files right from the app KEY FEATURES: - Import photos: You can import files from different sources such as iCloud, File App or gallery - Supported image formats: jpg, png, bmp, gif, tiff, heic, webp,... and more to come - PDF files management: Access all the files right in the app, easy to edit, reshare the PDF file or delete it - Simplicity & friendly design: Our intuitive UI makes it clear and fast to understand for anyone to use. - Compress PDF files: Support to reduce PDF size, Set the image quality - low, medium, high, and original as needed. - Work offline: Easily convert your images to PDF offline. - Share & print: Share the converted files to other apps or send via Message, Email, one tap printing right from the app Convert image to PDF file with ease and safe with our app Photo to PDF! With user-friendly UI design, this is the perfect photo to PDF converter app for you to convert image to PDF. You can merge multiple pictures into one single PDF file with our preset layout or you can customize it. We also support reducing image size and compressing the file to make it easier for you to send via Message or Email. There is no limitation to convert image to PDF, our app supports many photo formats and we will update to support more formats in the future. We hope you will enjoy the great experience with our Photo to PDF app! Image to PDF+ • You can subscribe for unlimited access to all features within the app and remove ads. All personal data is protected in accordance with the Terms of Use and Privacy Policy: https://rockybrain.com/terms/ https://rockybrain.com/policy/
Screenshots
Verdict
The clearest difference is update cadence: Image to PDF. at monthly against Sudden Call's every 47 months. Image to PDF. also leads on rating (4.8 vs 4.6) and review sentiment (62% vs 43%). Sudden Call's advantage is iOS requirement (9.1 vs 15.0). On price, ratings volume, ads and in-app purchases 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. Sudden Call sells 1 one-off in-app purchase and Image to PDF. sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Image to PDF. holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 54 and 146 respectively. Written reviews point the same way: 43% of Sudden Call's written reviews are positive against 62% of Image to PDF.'s.
Sudden Call ships an update every 47 months, Image to PDF. monthly. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.
| Parameter | Sudden Call | Image to PDF. |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (54 ratings) | 4.8 (146 ratings) — better |
| Positive reviews | 42.9% of reviews | 61.5% of reviews — better |
| Number of ratings | 54 | 146 — better |
| Update frequency | Every 47 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 10 MB |
| Age rating | 4+ | +4 |
| Developer | AMAXIM APPS, INC | Le Giang Nam |
Customer experience
Sudden Call
Image to PDF.
In-app purchases
Sudden Call
- Future Call$1.99
Image to PDF.
- Image to PDF+3 Days trial$0.997 Days
- Image to PDF+3 Days trial$9.991 Year
- Image to PDF+ Lifetime$29.99
