RoundKit - Rounded Corners

RoundKit is a focused, on-device image tool for rounded corners, cropping, reusable styles, and clean exports. Choose a photo, drag its four corners or start with a curated template, then create polished profile photos, product images, social posts, and app screenshots in seconds. Corners with real control • Drag four handles directly on the image • Choose Standard, Smooth, or Squircle curves • Fine-tune with a slider, exact values, and px or % units • Link all corners or adjust each one independently • Press and hold to compare with the original Templates that carry the whole look • Curated templates combine crop ratio, curve, radius, padding, background, border, and shadow • Recommendations adapt to practical English-language workflows such as app screenshots, Stories, profiles, and portfolios • RoundKit Pro lets you save your own named templates and reuse them on the next image • Personal templates store visual settings, never the source image Crop and professional styling • Popular aspect ratios, zoom, position, and 90° rotation • 12 curated, low-saturation background colors • Custom HSB and HEX colors with recent-color history • Transparent backgrounds, refined padding, shadows, and borders • A portrait-first workspace that also supports landscape, square, and original ratios Fast export • Export as PNG or JPEG • Save to Photos or Files, copy PNG, or share directly • Pro supports transparent PNG and full-resolution export • Keep one unfinished draft and clear it whenever you like Simple and private • No ads and no watermarks • No account and no image uploads • Every image is processed on your device • Available in English and Simplified Chinese with light and dark appearance RoundKit Pro is a one-time purchase with no subscription. Unlock Smooth, Squircle, independent corners, proportional radius, transparent PNG, full-resolution export, custom colors, the complete styling toolkit, and personal templates. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/