# ND Slow Shutter vs ND Exposure Calculator

The clearest difference is price: ND Slow Shutter at Free against ND Exposure Calculator's $2.49. ND Exposure Calculator's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence, device support and iOS requirement there is nothing between them.

ND Slow Shutter is free to download; ND Exposure Calculator costs $2.49 up front. ND Slow Shutter sells 1 one-off in-app purchase. ND Exposure Calculator asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on October 28, 2026.

## The numbers

| Metric | ND Slow Shutter | ND Exposure Calculator |
| --- | --- | --- |
| Price | **Free** | $2.49 |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 22 MB | 3 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Francesco Foianesi](https://appshunter.io/developer/1817962841) | [Paran](https://appshunter.io/developer/1698510581) |

## What reviewers say

### ND Slow Shutter

[App page](https://appshunter.io/ios/app/nd-slow-shutter/id6747008686)

**Features:** Family Sharing, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Version | $2.99 | one-time |


### ND Exposure Calculator

[App page](https://appshunter.io/ios/app/nd-exposure-calculator/id6784561741)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ND Slow Shutter free?

ND Slow Shutter is free to download, with in-app purchases available.

### Is ND Exposure Calculator free?

ND Exposure Calculator costs $2.49, with no in-app purchases.

### Do ND Slow Shutter or ND Exposure Calculator have ads?

ND Slow Shutter shows ads; ND Exposure Calculator does not.

### Which is updated more often, ND Slow Shutter or ND Exposure Calculator?

ND Slow Shutter ships an update every 3 weeks, and ND Exposure Calculator every 3 weeks. Most recently, ND Slow Shutter was updated on October 28, 2026 and ND Exposure Calculator on October 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*