StopStack

ND filter field planner

Only for iPhone

USD 2.99 · In-App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Choose the right ND filter stack, target shutter time, and long exposure timer from your own filter kit. StopStack helps long exposure photographers calculate neutral density filter exposures in the field. Save the ND filters you actually carry, enter your base exposure, and quickly see the shutter time you will get from one filter or a stacked combination. Working toward a specific creative effect? Enter your target shutter time and StopStack recommends the closest stack from your kit, with practical alternatives when the exact result is not possible. Built for waterfalls, seascapes, cloud streaks, crowd removal, architecture, travel, and quick video shutter checks. Features: - ND exposure calculator for single and stacked filters - Target shutter planner using your saved filter kit - Support for stops, ND factor notation, and optical density notation - Common scenario shortcuts for long exposure work - Long exposure countdown timer - Recent calculations stored locally - English, Simplified Chinese, and Japanese in-app language options - Local-first design with no account; optional sponsored offers use Google Mobile Ads StopStack is a focused field tool. Exposure planning does not require cloud sync or an account. Internet access is only needed for optional sponsored offers and App Store subscription support. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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Adds optional monthly support and sponsored-offer support. Core ND exposure planning, saved filters, and timers remain available without subscribing.

Version 1.0.2

The developer, MIANJUN LIU, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers
    • Usage Data

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Usage Data
    • Diagnostics

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Location
    • Diagnostics

Privacy practices may vary based, for example, on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Provider
  • MIANJUN LIU
Size
  • 4.8 MB
Category
  • Photo & Video
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 MIANJUN LIU
  • Developer Website
  • Privacy Policy

    • More by MIANJUN LIU

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