Comparison

Light Meter Ultra vs DisparaTimer

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

Head to head
About

Light Meter Ultra

This app provides precise light metering for film photography, eliminating the need for external hardware. It offers various metering modes and customizable profiles to ensure perfect exposures for manual cameras. Advanced features like reciprocity failure correction are available with a PRO plan.

Highlights
  • Aperture Priority Metering
  • Shutter Priority Metering
  • Exposure Priority Metering
  • Customizable ISO, Shutter Speed, Aperture
  • Exposure Compensation
  • Reciprocity Failure Correction
  • Custom Camera Profiles
Read full description

Fast, precise and easy to use. Get perfect exposures every time. No additional hardware required. Say goodbye to arcane Sunny 16. Figuring out the best exposure settings for your manual camera doesn’t have to be difficult. Light Meter Ultra for iPhone gives you the exact readings you need for your camera by simply pointing your device at the scene. Precise measurements mean you can dial in the perfect exposure settings for capturing the widest dynamic range, whilst customizable shooting profiles allow you to switch between settings with a single tap. Download now and take advantage of our free plan which includes our precision Aperture Priority metering mode, limited settings, and single-use shooting profiles. Or choose one of our PRO plans and gain access to everything the app has to offer, including our full suite of professional metering modes, quick-select reusable shooting profiles, plus advanced features such as reciprocity failure correction that you won't find elsewhere. Capture your creative vision with powerful features, including: - Aperture Priority Metering Mode - Shutter Priority Metering Mode* - Exposure Priority Metering Mode* - Stop increment selection of full, half or third stops* - Customizable ISO, Shutter Speed and Aperture ranges* - Exposure Compensation - Exposure Lock - Sample Offset - Custom Camera Profiles* - Detachable Lens Profiles* - Film/Emulsion Profiles* - Bulb-mode* - Reciprocity Failure Correction* *Features marked with an asterisk require an active PRO plan Download now and start metering on your iPhone today. Terms of Use: https://lightmeterultra.com/terms Privacy Policy: https://lightmeterultra.com/privacy

About

DisparaTimer

Features
Read full description

DisparaTimer is a mobile app that, when connected to a Raspberry Pico W/WH, can control the exposure time of a photographic enlarger using a power relay. The physical setup is inexpensive and easy to assemble. DisparaTimer has two operation modes. The first is a traditional timer mode, where you set a specific time for each exposure. The second is designed for creating test strips with constant fractional step increments over a base time. On iPad (iPadOS 17 and later), DisparaTimer includes a landscape-only notes panel that lets you add photos or images of your test strips and make handwritten or visual annotations directly on them.

Screenshots

Light Meter Ultra4 screens
DisparaTimer4 screens

Verdict

The call

The clearest difference is in-app purchases: DisparaTimer at none against Light Meter Ultra's 6. DisparaTimer also leads on iOS requirement (15.5 vs 18.6). Light Meter Ultra's advantage is update cadence (every 8 days vs monthly). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Light Meter Ultra sells 3 in-app purchases, starting at $7.99 per 7 days. DisparaTimer asks for nothing beyond the download.

UpkeepUpdate frequency

Light Meter Ultra ships an update every 8 days, DisparaTimer monthly. The most recent releases landed on October 30, 2026 and September 18, 2026 respectively.

Scorecard3 real differences · 7 level
Light Meter Ultra versus DisparaTimer: the parameters behind the verdict, then further details
ParameterLight Meter UltraDisparaTimer
PriceFreeFree
Rating4.7 (738 ratings) — better—
Positive reviews37.9% of reviews—
Number of ratings738 — better—
Update frequencyEvery 8 days — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.615.5 — better
Further details — not scored
Size81 MB2 MB
Age rating4+4+
DeveloperUltrafineAngel David Rodriguez

Bugs and requests

Light Meter Ultra

Reported bugs

2 issues
  • Camera integration issues causing failed exposures
  • Inconsistent metering results compared to standalone meters

Requested features

4 requests
  • Offline mode for remote shooting
  • Wider aperture and shutter speed range
  • Support for more camera/film types
  • Customizable exposure bias/compensation

DisparaTimer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Light Meter Ultra

Subscriptions3
  • Light Meter7 Days trial2 variants$7.997 Days
  • Light Meter2 variants$11.991 Month
  • Light Meter2 variants$39.991 Year
None

DisparaTimer

No in-app purchases

Questions

Is Light Meter Ultra free?
Light Meter Ultra is free to download, with in-app purchases available.
Is DisparaTimer free?
DisparaTimer is free to download, with no in-app purchases.
Do Light Meter Ultra or DisparaTimer have ads?
Neither Light Meter Ultra nor DisparaTimer shows ads.
Which is updated more often, Light Meter Ultra or DisparaTimer?
Light Meter Ultra ships an update every 8 days, and DisparaTimer monthly. Most recently, Light Meter Ultra was updated on October 30, 2026 and DisparaTimer on September 18, 2026.

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