iconFormat vs CallDam
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
iconFormat
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This app allows you to create home screen background images with additional backgrounds under app icons or folders visually changing your iPhone's home screen icons β select an image for your home screen background from the Photos app β change image size and/or position β make icons round, square, or give them desired corner radius (more options are available in round icons mode) β choose any background color for icons and transparency for such background β select any color and transparency of the icon borders β set thickness of the icon borders β set corner radius of the icons β select hue and intensity of the icons background blur β individual icons can be hidden or displayed again by clicking on the desired icon β to save the result, press the arrow button on the right β to set the background, go to the Photos app or enter wallpaper gallery from Lock Screen or Settings and set the saved image as the home screen background preserving original image size
CallDam
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CallDam is built for mass call blocking by phone-number prefix. Instead of blocking one unwanted number at a time, CallDam lets you create prefix rules that can protect thousands of related numbers at once. The app is designed for large blocking lists, with support for up to 1.8 million active protected numbers. A key feature is direct blocking from the iPhone share flow. When you see an unwanted number or contact, share it to CallDam and create a prefix blocking rule without manually opening the app and rebuilding the rule step by step. Main features: β’ Block unwanted calls by phone-number prefix β’ Protect large ranges of related numbers β’ Support for up to 1.8 million active protected numbers β’ Add exact-number exceptions for numbers you still want to allow β’ Pause, resume, edit, or delete rules β’ Batch-edit multiple rules before applying changes β’ Add rules directly from the iPhone share sheet β’ Import and export local JSON backups β’ Apply your active block list through iOS Call Blocking & Identification Private by design: β’ No account required β’ No ads β’ No subscriptions β’ No in-app purchases β’ No tracking β’ No contact access required β’ No blocked-number uploads β’ Your blocking rules stay on your device CallDam prepares your active blocking list locally and applies it through Appleβs iOS Call Blocking & Identification system. Supported prefix-blocking countries and regions: Russia / Kazakhstan (+7), USA / Canada (+1), Armenia (+374), Belarus (+375), Ukraine (+380), Tajikistan (+992), Azerbaijan (+994), Georgia (+995), Kyrgyzstan (+996), Uzbekistan (+998), France (+33), Spain (+34), Poland (+48), Denmark (+45), Norway (+47), Netherlands (+31), Switzerland (+41), India (+91), Iran (+98), Australia (+61), Singapore (+65), Turkey (+90), South Africa (+27), UAE (+971), Saudi Arabia (+966), and Egypt (+20). Important: To block calls, you must enable CallDam manually in iOS Settings: Settings > Apps > Phone > Call Blocking & Identification. CallDam does not collect, upload, sell, or share your blocked numbers.
Screenshots
Verdict
The clearest difference is in-app purchases: CallDam at none against iconFormat's 8. iconFormat's advantage is device support and iOS requirement (14.2 vs 17.6). On price there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. iconFormat sells 8 one-off in-app purchases. CallDam asks for nothing beyond the download.
| Parameter | iconFormat | CallDam |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 7 months | β |
| Ads | No | β |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPod β better | β |
| Requires iOS | 14.2 β better | 17.6 |
| Further details β not scored | ||
| Size | 7 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Oleksiy Yudin | Valentina Prossapchuk |
In-app purchases
iconFormat
- Hide icon$0.99
- Resize image$0.99
- Background color$0.99
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- Border color$0.99
- Background opacity$0.99
- Border opacity$0.99
- Corner radius$0.99
- Unlock all$4.99
CallDam
No in-app purchases





