Comparison

ONNOA vs DoF Visualizer

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

Head to head
About

ONNOA

This app acts as a remote control for a physical camera accessory, enabling advanced time-lapse photography. It offers features like linear time-lapsing, interval ramping, and long exposure control for professional results.

Highlights
  • Remote triggering
  • Linear time-lapse
  • Interval ramping
  • Long exposure bulb mode
  • Presets
Features
Read full description

SmartTimer is a physical product from ONNOA. This app serves as a remote control for it. Stop making boring time lapses. The SmartTimer is a state-of-the-art remote shutter release and intervalometer. Connect it to your camera and create stunning images and timelapses without any limitations. With advanced features such as linear timelapsing, interval ramping, long exposures, presets and remote triggering, it is suitable for all photographers and astrophotographers who want to get the best out of their camera. Compact, easy to use and with a wide range of settings, our device is suitable for professional photographers and beginners alike. Take your photography to the next level with advanced interval control for professional results. Main features: - Linear time-lapse - Interval ramping - Long exposure bulb mode - Presets - Remote triggering

About

DoF Visualizer

Features
Read full description

DoF Visualizer — Ten Visual Tools for Photographers Stop guessing what your gear will do. DoF Visualizer turns the math behind photography into clear, interactive diagrams you can read at a glance. Drag a slider and watch the focus zone shift, the bokeh balls grow, the star trails appear. Plan the shot before you press the shutter. Built for photographers who care about why their images look the way they do — from portrait shooters chasing creamy backgrounds, to landscape photographers planning silky water, to astrophotographers timing their exposures, to macro shooters stacking focus on a single flower. TEN TOOLS IN ONE APP • Depth of Field — See exactly what's sharp. Live cone visualization with near focus, far focus, and hyperfocal distance for any lens, aperture, and sensor. • Hyperfocal Distance — Maximize depth of field for landscapes. Watch the in-focus band slide and stretch as the aperture changes, with an animate-aperture demo that shows the effect at a glance. • Bokeh — Preview background blur before you shoot. Adjust focal length, aperture, subject distance and background distance to see how big those bokeh balls will actually be. • Diffraction — Watch the Airy disk grow across your sensor's pixel grid. Find the aperture where diffraction starts robbing detail on your specific megapixel count. • Focus Stacking — Plan macro stacks. Tell it your subject depth and it returns the number of shots and the focus step in millimeters, with every slice's depth of field visualized. • Crop Compare — One focal length, four sensors. See concentric framing rectangles for Micro 4/3, APS-C, Full Frame, and Medium Format, with equivalent focal lengths labeled. • Nodal Rail — Estimate the no-parallax-point offset for stitched panoramas. Save calibrated values per lens and recall them with a tap. • ND Filter — Long-exposure planner. Pick your base shutter and target exposure, get the exact stops needed and the nearest standard ND filter. • Astro — Maximum exposure for sharp stars, using the modern NPF rule (more accurate than the 500 rule for high-megapixel sensors). Stars stay as dots — or sprout trails when you push past the limit. • Sun — Sunrise, sunset, solar noon, day length, golden hour, and civil twilight at your GPS location. Computed locally, no internet required. The on-screen arc even rises and falls with the season. DESIGNED FOR THE WAY PHOTOGRAPHERS THINK • Real lenses, real focal lengths — 8 mm through 1200 mm, the focal lengths actual lenses are built for. • All four common formats — Micro 4/3, APS-C, Full Frame, and Medium Format, with the correct circle of confusion and sensor dimensions. • Interactive visualizations — Every slider updates a live diagram. No number-crunching, no spreadsheets, no guessing. • Works anywhere — All calculations run on-device. No accounts, no ads, no subscriptions, no network required (location is used only by the Sun tool, and only with your permission). • Clean and fast — Native SwiftUI. Open the app, tap a tool, start planning. WHO IT'S FOR • Portrait photographers picking the right aperture for soft backgrounds. • Landscape photographers timing long exposures and dialing in hyperfocal distance. • Astrophotographers calculating their max shutter speed and timing the blue hour. • Macro photographers planning focus-stacking sequences. • Videographers and panorama shooters working with nodal rails. • Anyone shooting at golden hour and needing the times for tonight's location. • Students learning the optics behind their gear. • Anyone shopping for a new lens, sensor, or filter and wanting to see what it'll actually do. Take the guesswork out of every shot. See the physics, then make the photo.

Screenshots

ONNOA4 screens
DoF Visualizer4 screens

Verdict

The call

The clearest difference is price: ONNOA at Free against DoF Visualizer's $0.99. ONNOA also leads on iOS requirement (15.0 vs 18.2). DoF Visualizer's advantage is update cadence (every 9 days vs every 4 weeks). On 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

CostPrice · In-app purchases · Ads · Monetization

ONNOA is free to download; DoF Visualizer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ONNOA ships an update every 4 weeks, DoF Visualizer every 9 days. The most recent releases landed on October 1, 2026 and October 16, 2026 respectively.

Scorecard3 real differences · 7 level
ONNOA versus DoF Visualizer: the parameters behind the verdict, then further details
ParameterONNOADoF Visualizer
PriceFree — better$0.99
Rating4.8 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 4 weeksEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better18.2
Further details — not scored
Size52 MB2 MB
Age rating4+4+
DeveloperONNOA GbRGreg Boratyn

In-app purchases

None

ONNOA

No in-app purchases

None

DoF Visualizer

No in-app purchases

Questions

Is ONNOA free?
ONNOA is free to download, with no in-app purchases.
Is DoF Visualizer free?
DoF Visualizer costs $0.99, with no in-app purchases.
Do ONNOA or DoF Visualizer have ads?
Neither ONNOA nor DoF Visualizer shows ads.
Which is updated more often, ONNOA or DoF Visualizer?
ONNOA ships an update every 4 weeks, and DoF Visualizer every 9 days. Most recently, ONNOA was updated on October 1, 2026 and DoF Visualizer on October 16, 2026.

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