ACamViewfinder vs Nitra
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ACamViewfinder
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ACam Viewfinder is a professional camera-department toolkit for filmmakers who work with diopters, Super 35, Full Frame, and ALEXA formats. Download free. Use Quick Diopter, Diopter Result, Depth of Field, and Hyperfocal on set immediately. Unlock ACam Pro once when you need the prep suite. No subscription. No account. Works in airplane mode. Free tools Quick Diopter is the on-set close focus tool. Enter marked focus and target distance to get ideal diopter power, the nearest standard glass (+1/8, +1/4, +1/2, +1, +2, +3), a comparison table of resulting focus distances, and a BEST FIT highlight for the strength to pull from the kit. Results update as you type or tap +/-. Meters or feet. Diopter Result is for kit check. Enter marked focus and a known diopter strength to see the resulting subject distance. Depth of Field shows near, far, and total DOF for a focus mark using the format circle of confusion, plus how much sits in front of the mark and how much sits behind. Built for focus pulls and stop decisions. Hyperfocal gives hyperfocal distance and near limit for near-to-infinity coverage. ACam Pro (lifetime unlock) One non-consumable purchase. Restore on any iPhone or iPad. Precision Mode is offset-aware diopter planning with DOF context. Formats include Super 35, ARRI ALEXA 35 Open Gate, Full Frame, and Large Format / VistaVision. Enter focal length, aperture, marked focus, target distance, and sensor-to-diopter-plane offset in mm. See near and far depth-of-field tolerance. Load a saved lens package to fill the fields. Split Focus returns the focus mark and stop that hold two subject distances. Viewfinder and Split is composition planning: horizontal and vertical FOV, frame width and height at subject distance, and a place-and-rotate split-diopter line for staging notes. This is a planning overlay only, not an optical aberration simulator. Focal Match keeps the same angle of view when you move a lens between formats — horizontal, vertical, or diagonal. Saved Lens Packages store format, focal length, diopter-plane offset, and aperture on the device. Create, edit, delete, and load them into Precision Mode. No cloud. Custom camera formats with your own circle of confusion are included with Pro. Designed for set Offline optics math. No account, no ads, no analytics SDK. Dark cinema-kit UI. Guide on first launch and on every tool. Glove-friendly +/- steppers. Treat offset-aware results as prep estimates until you verify on the glass. Who it is for Focus pullers, 1st ACs, DPs, operators, rental houses, and lens techs. What you pay for Free is Quick Diopter, Diopter Result, Depth of Field, and Hyperfocal. ACam Pro is the prep suite as one lifetime unlock. ACam Viewfinder answers hard focus and framing questions quickly so you can move on with the shot.
Nitra
Enhance your photos with advanced HDR editing. This app offers intelligent analysis for natural HDR starting points and real-time adjustments. Explore various HDR formats and bring depth to everyday shots, RAW images, and Live Photos.
- Intelligent HDR analysis
- Real-time HDR rendering
- Multiple HDR formats (HEIC, JPEG, PQ, HLG)
- HDR Live Photo editing
- Photo editing extension
- Batch export
- Reversible editing
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Bring More Depth to Light. Nitra is an HDR photo editor designed to bring brighter, richer light to your photos. From everyday photos and RAW images to Live Photos, Nitra gives you an intuitive way to create, refine, and rediscover your photos in HDR. Select a photo and Nitra automatically analyzes the image to create a natural HDR starting point. Every adjustment is rendered in real time, so you can shape the light and see the result instantly. INTELLIGENT HDR EDITING • Automatically analyzes each photo for a natural HDR starting point • Edit photos and RAW images with real-time HDR rendering • Fine-tune light and highlights with intuitive controls • Explore HDR Styles for different looks and moods MULTIPLE HDR FORMATS Choose the HDR format that best fits your device or workflow: • Adaptive HDR (HEIC) — optimized for the Apple ecosystem • Legacy HDR (JPEG) — better compatibility with social platforms • Ultra HDR (JPEG) — ISO-standard Gain Map HDR • PQ and HLG — single-layer HDR for professional workflows Adaptive HDR, Legacy HDR, and Ultra HDR are available for free. HDR LIVE PHOTOS Bring HDR light and depth to your Live Photos. Nitra can enhance the still image in HDR, while Nitra Pro extends HDR processing to the motion as well for a complete HDR Live Photo experience. BUILT INTO YOUR PHOTO WORKFLOW • Edit directly from the Photos app with the Nitra photo editing extension • Send photos to Nitra quickly with the action extension • Preserve adjustment information for reversible editing • Edit multiple photos and apply shared adjustments • Batch export multiple photos REVISIT YOUR PHOTOS Some photos deserve to be seen again. Revisit brings photos you've edited with Nitra back into an immersive HDR viewing experience. Browse at your own pace or let your photos flow automatically, and rediscover the light and moments you've captured. NITRA PRO Upgrade to Nitra Pro to unlock: • Full HDR Live Photos with HDR motion • Higher-quality HDR exports • Unlimited multi-photo editing and batch export • Professional HDR tools, including PQ, HLG, and the HDR histogram • Exports without the Nitra watermark PRIVACY FIRST Nitra requires no account. Photo analysis, RAW processing, HDR rendering, and exporting are performed entirely on your device. Your photos are never uploaded to a server. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getnitra.app/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: ACamViewfinder at none against Nitra's 3. On price, update cadence, ads 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. Nitra sells 3 in-app purchases, starting at $1.99 per month. ACamViewfinder asks for nothing beyond the download.
ACamViewfinder ships an update every 3 weeks, Nitra every 10 days. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.
| Parameter | ACamViewfinder | Nitra |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 3 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Sanjay Korde | 峥 王 |
In-app purchases
ACamViewfinder
No in-app purchases
Nitra
- Nitra Pro Monthly$1.991 Month
- Nitra Pro Yearly7 Days trial$8.991 Year
- Nitra Pro Lifetime$19.99








