CropFlow: Photo Crop & Resize
Photography · AndroidFast offline photo cropping, aspect ratio presets, image rotation, and sharing.
Work
Portfolio and case studies: mobile apps we've built
Our clearest evidence is the software we ship ourselves. Each app below was designed and built by CarrySo with Flutter and is published on Google Play under the CarrySo developer account. The portfolio shows what we built; each case study explains the problem, the approach, the engineering and the outcome.
How to read this page. Every project here is a CarrySo product (software we own), shown as evidence of capability. Client projects are added only with the client's permission. Services we offer are described under Services.
Projects and case studies
Project type for every entry: owned product, built and published by CarrySo. Install counts, versions and update dates are read from Google Play at build time (last checked 9 October 2026).
HEIC to JPG Converter Pro
Tools · AndroidConvert HEIC to JPG, PNG & PDF in one tap. 100% offline, private & fast.
GIF Maker: Video to GIF Editor
Video Players & Editors · AndroidCreate & edit animated GIFs from video & photos in seconds. No watermark!
Photo Compressor, Resizer: KB
Photography · AndroidCompress photo size in KB & MB. Batch image resizer & fast PNG/JPG converter.
Long Screenshot Stitch
Productivity · AndroidJoin screenshots into one long image. 100% on-device processing, no watermark.
Photo EXIF Remover: MetaClean
Photography · AndroidErase GPS location and EXIF metadata from photos and videos before sharing.
PDF Workbench – Editor & Sign
Tools · AndroidEdit, sign & organise PDFs offline. Saved to any folder you choose.
Product Photo Studio Remove BG
Photography · AndroidBackground remover for product photos. White BG for Amazon, eBay, Etsy. Offline
Video Compressor & Convert MP3
Video Players & Editors · AndroidCompress video size, convert MP4 to MP3 audio, trim & resize offline fast.
What these apps have in common
- Built with Flutter and Dart, supporting Android 7.0 and later
- Core processing happens on the device, so user photos and videos are not uploaded
- Shared in-house tooling for remote configuration, update prompts and push notifications
- Automated tests around the riskiest logic: parsers, conversion pipelines and repositories
- Privacy policies hosted on carryso.com and kept current from our admin panel
Building something similar? Our mobile app development, Flutter app development and Android app development pages explain how we'd approach it.
Have an app idea or an app that needs help?
Tell us what you want to build. We'll reply by email with questions, and then with a proposed scope and estimate.