Comparison

CalcuLight vs Frames

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CalcuLight

This app provides advanced light metering for film photographers, offering multiple metering modes and exposure control options. It helps users achieve precise exposures for their shots, with features like Zone System display and a log book for tracking. A free version is available, with an optional Pro upgrade for more advanced tools.

Highlights
  • Center Weighted metering
  • 3D Matrix metering
  • Spot metering (Pro)
  • Calculated metering (Pro)
  • Shutter Priority metering
  • Aperture Priority metering (Pro)
  • Zone System overlay (Pro)
  • Log book with GPS (Pro)
Features
Read full description

CalcuLight is a powerful, intuitive light meter for film photographers who want more than a handheld meter can offer. METERING MODES Center Weighted: Classic center focused metering (approximately 30 degree field of view), similar to vintage film cameras. Matrix: Full frame averaging for tricky scenes. Uses your camera's EXIF data for the fastest possible readings. Spot (Pro): Measure a precise 5% area of the frame. Tap anywhere to position the metering point. Calculated (Pro): Tap up to five areas for an averaged reading, plus the brightness range between your darkest and brightest points. Set your film type and CalcuLight warns when a scene's contrast will not fit. EXPOSURE COMBINATION SCALE Instead of a single pair of numbers, the readout shows a scale of equivalent exposures, so you can see at a glance that 1/125 at f/5.6 matches 1/250 at f/4. Swipe to scroll through combinations, or tap one to switch instantly. Combinations your camera cannot reach are flagged before you commit. EXPOSURE CONTROLS Shutter Priority: Set your shutter speed. Aperture Priority (Pro): Set your aperture. EV Compensation: Per shot adjustment in full, half, or third stops. ISO, shutter, and aperture (Pro) values in full, half, or third stop increments. Camera Range Limits (Pro): Restrict ISO, shutter and aperture to what your gear can actually do. Apertures reach f/0.7 for fast optics like the Noctilux. SHOOTING PROFILES (Pro) Save a named setup for how you are actually shooting: the film, how you are rating it, and the filter on your lens. Push and pull in third stops, up to three either way. Push two stops on ISO 400 film and CalcuLight meters it as EI 1600. Filter compensation up to ten stops, from a yellow filter to an ND10. Switch setups from the viewfinder. The active profile is always shown on screen, so a reading is never quietly adjusted without you seeing why. ZONE SYSTEM VALUE DISPLAY (Pro) Displays the current zone from 0 to X beside your metering point. In Calculated mode, each point shows its own zone value. LIVE HISTOGRAM (Pro) Real time RGB histogram to catch clipped highlights and blocked shadows before you shoot. Toggle combined RGB, red, green, and blue channels. LOG BOOK (Pro) Save every reading with full exposure data, metering mode, GPS location (choose precise or general) and timestamp. Notes are pre-populated with captured values in Calculated mode. Export as CSV, JSON, or plain text. MULTI-LANGUAGE SUPPORT English, 简体中文, 繁體中文, 日本語, 한국어, हिन्दी, Русский, Deutsch, Français, Español, Português, Nederlands FREE vs PRO The FREE version is completely ad-free and covers over 90% of what film shooters need for exposure metering. Free version features: Center Weighted and Matrix metering Shutter Priority metering Exposure combination scale EV compensation Single metering mode ISO, shutter and EV compensation stop increments Light and dark themes Portrait and landscape with orientation lock Overlay transparency All 12 languages Pro version: All free version features Spot metering with adjustable area Calculated metering Aperture Priority metering Shooting profiles with push/pull and filter compensation Vintage camera shutter speed options Zone System overlay Live histogram Log book with optional GPS location recording Continuous metering mode Global EV offset Exposure settings range limits Aperture stop increment control cd/m2 display Remember settings between sessions Silent metering (turn off the meter beep) Experimental features (lens switch) You can try Pro version at no cost for 14-days. After that, you can access the Pro version in two ways: Pay as you go for only $0.99 USD per month to access all Pro features (cancel any time); or $14.99 USD for lifetime access to all Pro features and future updates. Privacy Policy: https://calculight.ocutrain.com/privacy-policy.html Terms of Service: https://calculight.ocutrain.com/terms-of-service.html

About

Frames

Organize your entire photo library with intelligent tagging and powerful editing tools. All processing happens directly on your device, ensuring your privacy. Discover, edit, and perfect your images without leaving the app.

Highlights
  • AI-powered photo tagging
  • On-device face recognition
  • Smart, synonym-aware search
  • Advanced photo editing tools
  • RAW image development
  • Film looks and framing
  • Privacy-focused design
Features
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Frames turns your camera roll into a library you can actually search, and an editor you can actually work in. Everything happens on your device. Your photos never leave your phone. ORGANIZED THE MOMENT YOU OPEN IT Frames reads your library and tags what's in your photos, so you can finally find things: • Search by place, color, subject, and the people in the shot • Faces are recognized on device and gathered into albums you name • Smart, synonym-aware search: look for "dog" and find the labradoodle • Filter by date, location, camera, and more A REAL EDITOR, RIGHT ON TOP OF YOUR LIBRARY No importing, no round-trips. Open any photo and go: • Exposure, color, curves, and HSL with granular control • AI masks: select the subject, the sky, or any color or luminance range • RAW develop with highlight recovery and extended dynamic range • Film look, grain, color grade, and clean white-border framing • Save in-place in your library, or export as a new copy PRIVATE BY DESIGN All tagging, face grouping, and editing runs on your device. There's no cloud, no account, and no tracking. Your library stays yours. TRY EVERYTHING FREE Start with a 14-day free trial of the full editor — no card, no subscription required to try it. After that, Frames Pro unlocks the complete toolset: • Monthly subscription, or • A lifetime license - yours forever with no strings attached Frames is built for people who care how their photos look and where they live. Shoot it, find it, finish it. All in one place. — Frames Pro is a monthly auto-renewing subscription or a one-time lifetime purchase. The monthly subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://tyhaven.github.io/frames-privacy/

Screenshots

CalcuLight4 screens
Frames4 screens

Verdict

The call

The clearest difference is update cadence: Frames at weekly against CalcuLight's monthly. Frames also leads on chart position (#142 vs unranked). CalcuLight's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 26.0). On price, rating, ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. CalcuLight sells 2 in-app purchases, starting at $0.99 per month and Frames sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for CalcuLight against 5.0 for Frames. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

CalcuLight ships an update monthly, Frames weekly. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

Scorecard4 real differences · 7 level
CalcuLight versus Frames: the parameters behind the verdict, then further details
ParameterCalcuLightFrames
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings2 — better1
Update frequencyMonthlyWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
Best chart rank—#142 — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better26.0
Further details — not scored
Size40 MB226 MB
Age rating4+4+
DeveloperLi FanTYLER ANDREW HAVEN

Customer experience

CalcuLight

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Frames

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

CalcuLight

Subscriptions1
  • CalcuLight$0.991 Month
One-time1
  • CalcuLight$14.99
2 purchases

Frames

Subscriptions1
  • 1 month subscription$3.991 Month
One-time1
  • Lifetime license$19.99

Questions

Is CalcuLight free?
CalcuLight is free to download, with in-app purchases available.
Is Frames free?
Frames is free to download, with in-app purchases available.
Which has better reviews, CalcuLight or Frames?
CalcuLight and Frames are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do CalcuLight or Frames have ads?
Neither CalcuLight nor Frames shows ads.
Which is updated more often, CalcuLight or Frames?
CalcuLight ships an update monthly, and Frames weekly. Most recently, CalcuLight was updated on October 31, 2026 and Frames on November 6, 2026.

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