DOF Slider: Focus Calculator
DOF Slider: Focus Calculator is a technical tool for photographers and filmmakers to calculate depth of field and focus limits on iOS.
The App DNA
What makes this app unique?
The app removes the cognitive cost of manual depth-of-field calculations in the field by providing a visual, offline-first interface that works without internet connectivity.
For Photographers and filmmakers requiring precise depth of field calculations for digital, film, and cinema formats.
What does it look like?
Key features
Interactive animation showing depth of field effects on a virtual scene with adjustable focus and aperture.
Adaptive UI that shifts controls and results based on device hinge state and orientation.
Library of digital, film, and cinema camera formats with pre-calculated circle of confusion values.
How much does it cost?
Freemium model using one-time purchases to unlock specialized camera data, avoiding recurring subscription costs.
Velocity
Maintenance developmentUX improvementsnew contentplatform expansionShow more...
With only one release in the observed window and 17 days since the last update, the app operates at a maintenance cadence. Development is currently focused on hardware-specific UI optimizations and visual feedback tools. The latest release demonstrates a commitment to platform-specific design, though the overall frequency remains low. Future updates are expected to follow this pattern of occasional feature-rich drops rather than frequent iteration.
Who built it?
Mihai alexandru Bold
3 apps tracked · Photo & Video
DOF Pro
Grayn: Analog Film CameraUser Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for DOF Slider: Focus Calculator
How's the Photo & Video market?
DOF Slider: Focus Calculator maintains a specialized position in the Photo & Video category, holding a 3.7-star rating across 23 reviews. The focus on niche hardware support differentiates it from generalist calculators that lack adaptive layouts for foldable devices.
Read the market outlookThe rivals identified
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Access the full report for freeThe Analyst's Read
Key takeaways for DOF Slider: Focus Calculator
Where is it heading?
The market for technical photography tools remains stable, but DOF Slider: Focus Calculator must maintain its technical edge to prevent churn to generalist alternatives. The latest release shows active investment in form-factor support, which is critical for maintaining relevance among professional users who adopt new hardware early.
- The latest release (v2.8.0) demonstrates active investment in form-factor support, which is critical for maintaining relevance among professional users.
- The 3.7-star rating indicates that while the feature set is technically sound, the user experience requires refinement to improve sentiment.
The SWOT
- Adaptive UI for foldable devices establishes technical authority
- Offline-first architecture removes connectivity dependencies for field use
- Expanding the camera profile database to include emerging cinema formats
Next best moves
Audit onboarding flow because the 3.7-star rating indicates user friction → improve retention
The counter-intuitive read
The app's offline-first design is a retention lever…
Read the full takeBottom line
DOF Slider: Focus Calculator retains its technical niche through foldable-device support, but the 3.7-star rating signals that onboarding friction must be addressed to prevent churn to generalist alternatives.
Unlock 2 critical frictions, 1 market threat and the analyst’s take.
Access the full report for freeFAQ
Is DOF Slider: Focus Calculator suitable for professional filmmakers?
Does DOF Slider: Focus Calculator require an internet connection?
What is the difference between the free and paid versions?
What are some free alternatives to DOF Slider: Focus Calculator?
Sources
- [1] App Store listing
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