# StopStack — ND filter field planner

> ND filter field planner (iPhone/iPad app by MIANJUN LIU.)

- Source: https://appshunter.io/ios/app/stopstack/id6772482655 (this page in markdown: same URL + `.md`)
- Developer: [MIANJUN LIU](https://appshunter.io/developer/1807915951)
- Category: Photo & Video
- Price: $2.99 with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 5 MB
- Languages: American English
- Released: 2026-05-26
- Data updated: 2026-08-30
- User reviews in markdown: https://appshunter.io/ios/app/stopstack/id6772482655/reviews.md

## What is StopStack?

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/

## Pricing and in-app purchases

Base price: $2.99.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| StopStack Support Monthly | $0.99 | per month |



## Version history (last 3 releases)

### 1.0.2 — 2026-07-09

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

### 1.0.1 — 2026-06-03

Improved long-exposure timer behavior, reset feedback, compact scenario layout, and recent-save labels for a clearer field workflow.

### 1.0.0 — 2026-05-26

No release notes.

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## More apps by MIANJUN LIU

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All apps by MIANJUN LIU: https://appshunter.io/developer/1807915951

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*