Fexer vs Knurl Camera
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fexer
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Fexer is a professional manual camera for iPhone — the controls of a dedicated camera, real-time color grading, and cinematic shooting modes, all in your pocket. MANUAL CONTROLS • ISO (25–6400), shutter speed (1/8000–30s), and manual focus, each with an auto toggle • White balance in Kelvin (3200–7500K) plus tint, with 7 presets • AE lock, four metering modes, and an EV compensation strip SHOOTING MODES • Photo — AEB bracketing, RAW / RAW+JPEG, LUT baked at capture • Video — 1080p/4K in HEVC, H.264, or ProRes, with GPS metadata • Long Exposure — multi-frame blending up to 60 frames • Burst, Self-Timer, and Timelapse • Anamorphic — 2x horizontal desqueeze with a 2.39:1 crop guide • Night and Portrait modes REAL-TIME COLOR GRADING 21 film-inspired looks across Film, Genre, and Mood categories — applied live in the viewfinder and baked into every capture. Includes classic film emulations like Portra 400, Tri-X, and Velvia alongside cinematic and moody grades. VIEWFINDER TOOLS Grid overlays, RGB/Luma/Parade histogram, waveform monitor, vectorscope, focus peaking, zebra stripes, false color, and an electronic level — the same tools you'd expect from a dedicated cinema camera, live in your viewfinder. NON-DESTRUCTIVE EDITING Adjust exposure, contrast, shadows, highlights, saturation, vibrance, warmth, sharpness, vignette, crop, and rotation after the fact — your original capture is never touched. Fexer collects no data, has no ads, and makes no network requests. Everything happens on your device. Requires a physical iPhone — the camera does not work in the Simulator.
Knurl Camera
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Knurl is a camera for people who would rather develop the photo themselves. It captures true Bayer RAW: the sensor's own mosaic, written straight to a DNG with none of the computational photography that normally happens on the way. No multi-frame fusion, no tone curve, no sharpening. What lands in your library is undeveloped data with all of its latitude intact, ready for Lightroom or Photos to interpret however you like. THE CONTROLS ARE THE POINT A mode wheel you turn, with the real designations: P for program, Tv for shutter priority, Sv for ISO priority, M for full manual. Every position clicks. ISO and shutter move in thirds of a stop along the standard photographic ladders, on a dial that detents at every rung. Whole stops click harder than thirds, so you can count them by feel without looking. The ends of each ladder are the sensor's genuine limits rather than round numbers, which means base ISO, the cleanest the sensor gets, is actually reachable. Exposure compensation on its own scale, in thirds, with a firmer detent at zero. In manual it becomes the meter, because compensation has nothing left to act on when both controls are already fixed. An AF/MF switch and a focus ring you turn like a ring: relative, so touching it never jumps focus, and marked near to far rather than in invented distances. Three lenses, each at its native focal length, read from the hardware. HONEST ABOUT ITSELF Bayer RAW is 12 MP and does not permit zoom. The 48 MP path would mean Apple ProRAW, which is demosaiced and partially processed, so Knurl does not offer it. When the exposure you have asked for is not achievable, it says so rather than pretending. Your shots go to a Knurl album you can browse in the app, pinch to zoom, and swipe through. Volume buttons fire the shutter. Add the Control to your Action Button, Lock Screen or Control Center to open it without unlocking.
Screenshots
Verdict
The clearest difference is iOS requirement: Knurl Camera at 18.0 against Fexer's 26.5. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Fexer | Knurl Camera |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone |
| Requires iOS | 26.5 | 18.0 — better |
| Further details — not scored | ||
| Size | 23 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Nandan Varma Pericharla | Dimitrios Zarkadas |
In-app purchases
Fexer
No in-app purchases
Knurl Camera
No in-app purchases









