# ND Filter Calc vs ND Easy

The clearest difference is update cadence: ND Filter Calc at every 6 days against ND Easy's every 5 weeks. ND Filter Calc also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ND Filter Calc ships an update every 6 days, ND Easy every 5 weeks. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | ND Filter Calc | ND Easy |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 5 weeks |
| Monetization | Free | — |
| Size | 47 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jerry Watson](https://appshunter.io/developer/1647846813) | [Gerard DUVAL](https://appshunter.io/developer/1890192604) |

## What reviewers say

### ND Filter Calc

[App page](https://appshunter.io/ios/app/nd-filter-calc/id6449380764)

This tool helps photographers calculate neutral density filter effects on their camera's exposure. It includes a countdown timer for long exposures, simplifying the process of achieving desired results.

**Highlights:** Neutral density filter calculation, Exposure compensation, Long exposure timer, Countdown for shutter speeds > 3 seconds, Simple interface

**In-app purchases:** none


### ND Easy

[App page](https://appshunter.io/ios/app/nd-easy/id6783327572)

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

**In-app purchases:** none


## Frequently asked questions

### Is ND Filter Calc free?

ND Filter Calc is free to download, with no in-app purchases.

### Is ND Easy free?

ND Easy is free to download, with no in-app purchases.

### Do ND Filter Calc or ND Easy have ads?

Neither ND Filter Calc nor ND Easy shows ads.

### Which is updated more often, ND Filter Calc or ND Easy?

ND Filter Calc ships an update every 6 days, and ND Easy every 5 weeks. Most recently, ND Filter Calc was updated on September 30, 2026 and ND Easy on October 8, 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.*