Trevni: Film Negative Inverter

Trevni: Film Negative Inverter

Convert film negatives

2 ratings
11 reviews
$2.99

Details

  • Released
  • Updated
  • May 21, 2025
  • September 2, 2026
Trevni: Film Negative Inverter screenshot #1 for iPhone
Trevni: Film Negative Inverter screenshot #2 for iPhone
Trevni: Film Negative Inverter screenshot #3 for iPhone
Trevni: Film Negative Inverter screenshot #4 for iPhone
Trevni: Film Negative Inverter screenshot #5 for iPhone
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About

Transform your film negatives into vibrant digital images with a single touch. This app automatically removes the orange mask from color film and offers fine-tuning controls for precise adjustments. It's designed for film photographers and enthusiasts to easily digitize and enhance their analog work.

One-touch conversion for C-41 and B&W negatives
Automatic orange mask removal
Preserves image quality and metadata
Customizable presets and fine-tuning controls
Supports photographed or scanned negatives
Intuitive workflow for import, adjustment, and export
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+1

What's New in Trevni

1.3

September 2, 2026

Fixes to RAW support: Trevni now supports RAW files from Nikon and Canon cameras, Adobe DNG, and ProRAW from iPhone. Your negative is processed at full resolution, preserving much more detail for conversion and editing. Full-resolution export: Save your finished positive as JPEG, HEIC or TIFF. TIFF keeps every pixel for further editing; JPEG and HEIC are better for sharing. Your photo’s details come with it: Camera, lens, exposure settings, date and location carry across to the saved image, so an inverted frame stays as easy to find in your library as the original. Smoother to use: Sampling the film base and moving the adjustment sliders are noticeably more responsive, especially on large files.

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User reviews

Great lightroom alternative

Awesome minimal app for inverting negatives. I only do B&W and I'm surprised at how often the auto-sample feature gives me a solid result close to what I would choose manually. Does it have all the granular controls of LR? Of course not, but I'm not a professional and this is absolutely good enough. Plus I'm not giving adobe my money!

A couple features that would be nice in the future:
- Bulk or Queued editing (select a bunch of pics and then either auto-sample them all or go one by one, edit & save and then automatically load up the next pic)
- Better "save" workflow. Right now you hit save, then save again. Would be nice if I could have it default to "save to camera roll"
- sampling reticule - I understand why the crosshair lands directly under your fingertip, but I'd prefer to "grab" the outer edge of the circle so I can actually see where the reticule is without my fingertip covering it. Just a nitpicky thing.

Great work!
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Response from developer

Thank you! This is fantastic feedback. My original objective was to make negative conversion quick and straightforward without requiring a huge editing workflow, so it’s great to hear that auto-sample is working well for you. I really like your suggestions too, particularly the edit/save/advance workflow and the sampling reticule. Making it easier to work through a whole roll is something I’m very interested in improving. Thanks again for taking the time to write such a thoughtful review. Jim

App not working!

I tried loaded negative photos and wouldn’t work.

Response from developer

Thanks for your feedback, and I’m sorry the app didn’t work as expected. I’d really like to help. If you can get in touch via the support link in the App Store and let me know what type of negative you were using (or send a sample image), I’ll investigate straight away. Your feedback helps make Trevni better Update (2/9/26): I’ve identified and fixed an issue affecting some RAW workflows. The latest version now properly loads and develops various RAW formats at full resolution, including DNG and ProRAW.

Really useful

Great app. I use it with my light table to preview before printing in my enlarger. I wish it had a straightening option, so I could pick my image corners and have corrections.

Response from developer

Thanks so much. Really glad to hear Trevni is fitting into your darkroom workflow. That’s a great shout on straightening and corner correction too, especially when working from photographed negatives on a light table. Definitely something I’d like to explore in a future update.

Fast gut

Bitte auch eine Version für das iPad bereitstellen. Aufgrund der Größe und besseren Sichtbarkeit der Negative.
Ich verwende die iPhone Version auf dem iPad, jedoch wird das Karusell nicht dargestellt.

Response from developer

Vielen Dank für das durchdachte Feedback, das ist sehr hilfreich. Du hast völlig recht, dass die Arbeit mit Negativen von einem grösseren Display profitiert, und es freut mich zu hören, dass du die App bereits auf dem iPad nutzt. Dass das Karussell auf dem iPad nicht angezeigt wird, ist nicht das erwartete Verhalten, das werde ich mir genauer ansehen. Eine native iPad-Unterstützung ziehe ich aktiv in Betracht. Vielen Dank, dass du dir die Zeit für dieses Feedback genommen hast.

Greatest app I have ever found

This app is hands down the best I’ve found for converting negatives into high-quality digital photos. Whether I’m working with old black-and-white rolls or color film, the results are consistently accurate, sharp, and true to the original. The color restoration is impressive—no strange tints or washed-out tones—and the black-and-white conversions retain beautiful depth and detail.

What really sets this app apart is its ability to balance precision with ease of use. The scanning and inversion process is smooth, and the built-in correction tools allow fine adjustments without needing extra software. It feels like having a darkroom in your pocket, but faster and more reliable. If you’re serious about preserving old film memories with professional-quality results, this app delivers. It doesn’t just digitize negatives—it brings them back to life. Having processed several thousand negatives with this app, I can confidently assert that the latest update has greatly improved its overall performance. The enhancements have introduced a more streamlined workflow and elevated the user experience, making it easier than ever to achieve exceptional results.
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Response from developer

Thank you so much for this. I’m really happy to hear the results have been consistent across both colour and black-and-white film. It means a lot that the balance between quality and ease of use is working well for you. “A darkroom in your pocket” is exactly what I was aiming for. Thanks for the thoughtful review and support!

Developer apps

FAQ

What is Trevni?

Trevni is a mobile application designed to convert photographed or scanned film negatives into true-to-life digital images. It automatically removes the orange mask from color film and offers various adjustment tools for precise editing.

How does Trevni convert film negatives?

Trevni offers a one-touch conversion process for both C-41 color and black & white film negatives. It can also automatically remove the orange mask from color film, preserving original image quality and metadata.

Can I adjust the converted images in Trevni?

Yes, Trevni provides presets and fine-tune controls. You can adjust temperature, tint, exposure, contrast, and saturation, and even create and save your own custom adjustment presets.

What types of negatives does Trevni support?

Trevni supports C-41 color and black & white film negatives. It works with both photographed negatives (e.g., from iPhone captures) and scanned negatives (from digital cameras or flatbed scanners).

Is Trevni free to use?

No, Trevni is a paid application. It is available for purchase at $2.99.

Does Trevni have ads?

No, Trevni is ad-free. The application does not contain any advertisements.

What devices is Trevni compatible with?

Trevni is currently supported on iPhone devices. It was last updated on March 21, 2026, with version 1.2.2.

Who developed Trevni?

Trevni was developed by James Moore, a film photographer, with the aim of providing faithful conversion tools for analog workflows.