Ossidex
Best Free DICOM Viewer for iPhone & iPad in 2026
Updated April 2026 · 5 min read
Most professional DICOM viewers cost $50–$800 per year. But for viewing CT, MRI, and X-Ray scans on iPhone or iPad, you don't need to pay anything to get started. Ossidex offers a fully functional free tier with no time limit, no account required, and no cloud uploads.
What's Free in Ossidex
Free vs Desktop DICOM Viewers
Traditional desktop free options like OsiriX Lite, Horos, or MicroDicom are Windows/Mac-only and require a full installation. Ossidex free runs natively on iPhone and iPad — no desktop required, no setup.
| Feature | Desktop Free | Ossidex Free |
|---|---|---|
| Works on iPhone | ✗ | ✓ |
| Works on iPad | ✗ | ✓ |
| No installation | ✗ | ✓ |
| 100% offline | ✓ | ✓ |
| No account needed | Varies | ✓ |
| All DICOM modalities | Varies | ✓ |
| ZIP import | Varies | ✓ |
How to Start Viewing for Free
1. Download Ossidex. It's free on the App Store. No payment info required to install.
2. Get your DICOM files. From your hospital CD, email attachment, patient portal download, or imaging center export.
3. Import. Tap the “+” button, choose your source. Ossidex handles .dcm files, ZIP archives, and full folder structures.
4. View. Scroll through slices, pinch to zoom, adjust window/level with a drag gesture. Everything works offline.
Free Tier Limits
The free tier stores up to 10 scans and 2 patients simultaneously. When you reach the limit, delete older scans to add new ones. The scans themselves are not limited in size — a 2000-slice CT study is stored and viewed just like any other.
Optional Pro plans add advanced tools such as MPR reconstruction and measurements. Apple shows the current plans and regional price before purchase.
Ready to start?
Download Ossidex free — no account, no credit card, no cloud uploads.
Privacy — Why Free Doesn't Mean “You Are the Product”
Some free web-based DICOM viewers monetize by uploading your medical images to their servers. Ossidex free works entirely on-device. No data is sent anywhere. No ads. No analytics on your medical images.