Trevni
iPhone · Film negative converter
Film negatives.
Made positive.
Whether you're digitising old family negatives or working through your latest rolls, Trevni converts film negatives into true-to-life positive images on iPhone. No curves or levels required. And for colour negatives, the orange mask is handled automatically.
Features
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Colour and B&W negatives
Convert C-41 colour negatives and black & white film with a single workflow.
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Automatic orange mask removal
Designed for colour negative film. No curves or complex adjustments required.
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Works with scans and captures
Convert scans, camera captures and iPhone photos already stored in your Photos library.
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Fine control when needed
Adjust exposure, contrast, colour balance and tonal response.
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Reusable presets
Save your favourite settings and apply them across future edits.
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Private by design
All processing happens on your device. No uploads. No accounts.
Frequently Asked Questions
What devices are supported?
Trevni requires iPhone running iOS 17 or later.
Does it require a subscription?
No. Trevni is a one-time purchase.
Does it work offline?
Yes. Conversion runs on your device without a network connection.
What image formats are supported?
Import JPEG, DNG and HEIC. You can currently export as JPEG.
Can I scan negatives in the app?
Trevni converts images you import. Capture negatives with the Camera app or a scanning rig, then open them in Trevni.
Is my data collected?
Processing is local and photo access is limited only to the images you specify. See the privacy policy for additional details.
How do I get support?
Email info@fotosyn.com.