# RoundKit - Rounded Corners — Crop, Style & Export Images

> Crop, Style & Export Images (iPhone/iPad app by 生 赵.)

- Source: https://appshunter.io/ios/app/roundkit-rounded-corners/id6814104491 (this page in markdown: same URL + `.md`)
- Developer: [生 赵](https://appshunter.io/developer/1048849415)
- Category: Graphics & Design, Photo & Video
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: Chinese (Simplified, China), American English
- Released: 2026-09-22
- Data updated: 2026-10-01
- User reviews in markdown: https://appshunter.io/ios/app/roundkit-rounded-corners/id6814104491/reviews.md

## What is RoundKit?

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/

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| RoundKit Pro Lifetime | $4.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-09-22

No release notes.

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All apps by 生 赵: https://appshunter.io/developer/1048849415

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-01.*