Contour art, beautifully simple.
IsoDrift transforms your photos into stunning contour-line artwork — all processed privately on your device. Below you'll find answers to common questions, and a way to reach us if you need more help.
How does IsoDrift work?
IsoDrift analyzes the brightness of your photo and draws contour lines where the tonal values change — similar to a topographic map, but for light and shadow. You control how many contour levels, line density, smoothing, and color theme.
Are my photos uploaded anywhere?
No. All image processing happens entirely on your device. Your photos never leave your iPhone. We have zero access to your images.
What is IsoDrift Pro?
The free version lets you try IsoDrift with 5 photos. IsoDrift Pro unlocks unlimited photo processing and all export formats (PNG, SVG, and PDF) via a monthly subscription or a one-time lifetime purchase.
How do I manage or cancel my subscription?
Go to Settings → your name → Subscriptions on your iPhone. You can cancel anytime — you'll keep access until the end of your billing period.
How do I restore my subscription on a new device?
Sign in with the same Apple Account you used to subscribe. If it doesn't appear right away, tap "Restore Purchases" on the upgrade screen.
What export formats are available?
IsoDrift Pro supports PNG, SVG (scalable vector), and PDF. SVG and PDF produce true vector artwork that can be scaled to any size — perfect for printing.
If you have a question or found a bug, we'd love to hear from you.
We typically respond within 48 hours.