# ND Filter Calc vs ClapList

The clearest difference is in-app purchases: ND Filter Calc at none against ClapList's 3. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ClapList sells 3 one-off in-app purchases. ND Filter Calc asks for nothing beyond the download.

## The numbers

| Metric | ND Filter Calc | ClapList |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | — |
| Monetization | Free | — |
| Size | 47 MB | 33 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jerry Watson](https://appshunter.io/developer/1647846813) | [Wenbo Mu](https://appshunter.io/developer/1883589999) |

## 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


### ClapList

[App page](https://appshunter.io/ios/app/claplist/id6760276203)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Credits | $0.99 | one-time |
| 60 Credits | $4.99 | one-time |
| 150 Credits | $9.99 | one-time |


## Frequently asked questions

### Is ND Filter Calc free?

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

### Is ClapList free?

ClapList is free to download, with in-app purchases available.

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

Neither ND Filter Calc nor ClapList shows ads.

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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.*