# AutoND vs ND Filter Calc

The clearest difference is review sentiment: ND Filter Calc at 100% against AutoND's 67%. ND Filter Calc also leads on update cadence (every 6 days vs every 9 months). AutoND's advantage is iOS requirement (10.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

AutoND ships an update every 9 months, ND Filter Calc every 6 days. The most recent releases landed on October 6, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | AutoND | ND Filter Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/autond/id893179875/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 6 days** |
| Monetization | Free | Free |
| Size | 30 MB | 47 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Engel](https://appshunter.io/developer/893179878) | [Jerry Watson](https://appshunter.io/developer/1647846813) |

## What reviewers say

### AutoND

[App page](https://appshunter.io/ios/app/autond/id893179875)

This utility helps landscape photographers determine the correct graduated neutral density filter for any scene. It uses your device's camera to measure dynamic range or allows manual input for filter density calculations.

**Highlights:** Automatic dynamic range measurement, Filter density calculation, Manual shutter speed input, Filter recommendation, Supports graduated neutral density filters

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is AutoND free?

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

### Is ND Filter Calc free?

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

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

Neither AutoND nor ND Filter Calc shows ads.

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

AutoND ships an update every 9 months, and ND Filter Calc every 6 days. Most recently, AutoND was updated on October 6, 2026 and ND Filter Calc on September 30, 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.*