Comparison

illumeter vs SLR Assist

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

Head to head
About

illumeter

This app functions as a portable light meter, allowing users to measure exposure values like aperture, shutter speed, and ISO. It offers features for logging shots with location and settings, and provides customization options for a personalized user experience.

Highlights
  • Exposure measurement (Aperture, Shutter Speed, ISO)
  • Tap-to-focus exposure lock
  • Exposure compensation
  • Frame logging with location and settings
  • List and map view of logged frames
  • Customizable settings and appearance
Features
Read full description

illumeter, The Simplest Light Meter in Your Pocket. Exposure Meter • Choose the value you want to measure from Aperture, Shutter Speed, or ISO. • The selected value automatically adjusts based on changes in the other two settings. • Tap a specific point on the screen to lock the exposure to that area. • An exposure compensation feature is provided to help you handle various challenging lighting conditions. Frame Logging • Log your frames by composing your shot and pressing the shutter button. • Location, date and time, EV value, and settings are recorded with each frame. • Review your recorded frames in a list and on a map. • Easily delete or edit incorrect frames. Settings & Personalization • Easily toggle various features on or off. • Deactivate or remove unused values. • Customize the app's appearance and feedback to your preference.

About

SLR Assist

This app helps film photographers achieve perfect exposure with its intuitive light metering tools. It offers various shooting modes, real-time readings, and helpful tips for both beginners and enthusiasts. Unlock advanced features with a paid plan, including a free trial.

Highlights
  • Exposure measurement for film photography
  • Shutter priority mode
  • Program mode
  • Aperture priority mode
  • Real-time exposure readings
  • Expired film mode
  • Exposure compensation
Features
Read full description

Simple, fast and concise. Try exposure metering with SLR Assist today. Features include: - Shutter Priority Mode (Auto Aperture) - Full Auto (Program) Mode* - Spot Metering* - Aperture Priority Mode (Auto Shutter)* - Real-Time Exposure Readings - Center Weighted Metering - Customizable Aperture Range* - Exposure Offset* - Expired Film Mode* - Light and Dark Mode - Helpful Warnings and Tips - Full iPhone and iPad Support (iOS 15.0 onward) *Features marked with an asterisk require an active paid plan, which you can try for free during the trial period. Download now and capture the magic of film photography! SLR Assist is the exposure meter app for film photographers. Whether you're shooting 35mm or 120mm, our intuitive interface helps beginners and enthusiasts alike achieve perfect exposures. With modes for real-time guidance, you'll never miss a shot. Start with our free Auto Aperture mode, then unlock the full potential with our paid features. Experience the difference SLR Assist can make in your analog journey – download now and elevate your film photography today! SLR Assist functions as a light meter, measuring the amount of light in your scene to determine the correct exposure settings. It recommends optimal shutter speed and /or aperture combinations, ensuring your film photos are properly exposed – not too dark or too bright. This essential tool helps both novice and experienced photographers capture stunning images on film. SLR Assist requires iOS 15.0 or higher. Privacy Policy - https://sites.google.com/view/slr-assist-privacy-policy/home Terms of Use - https://sites.google.com/view/slr-assist-terms-of-use/home

Screenshots

illumeter4 screens
SLR Assist4 screens

Verdict

The call

The clearest difference is rating: illumeter at 4.6 against SLR Assist's 1.0. illumeter also leads on in-app purchases (none vs 2) and ratings volume (12 vs 1). SLR Assist's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement 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. SLR Assist sells 2 in-app purchases, starting at $0.99 per month. illumeter asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

illumeter holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: illumeter has 12 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

illumeter ships an update every 2 weeks, SLR Assist every 3 weeks. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

Scorecard5 real differences · 5 level
illumeter versus SLR Assist: the parameters behind the verdict, then further details
ParameterillumeterSLR Assist
PriceFreeFree
Rating4.6 (12 ratings) — better1.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings12 — better1
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size12 MB7 MB
Age rating4+4+
DeveloperSeunghun YangVsevolod Kemaev

Customer experience

illumeter

All ratings11 ratings
Positive90.9%
Neutral9.1%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

SLR Assist

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

illumeter

No in-app purchases

2 purchases

SLR Assist

Subscriptions2
  • Monthly7 Days trial$0.991 Month
  • Annual7 Days trial$9.991 Year

Questions

Is illumeter free?
illumeter is free to download, with no in-app purchases.
Is SLR Assist free?
SLR Assist is free to download, with in-app purchases available.
Which has better reviews, illumeter or SLR Assist?
illumeter is rated higher. illumeter averages 4.6 out of 5 from 12 ratings, while SLR Assist averages 1.0 from 1 ratings.
Do illumeter or SLR Assist have ads?
Neither illumeter nor SLR Assist shows ads.
Which is updated more often, illumeter or SLR Assist?
illumeter ships an update every 2 weeks, and SLR Assist every 3 weeks. Most recently, illumeter was updated on October 24, 2026 and SLR Assist on October 8, 2026.

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