# NDCalc2 vs ND+Timer

The clearest difference is review sentiment: ND+Timer at 60% against NDCalc2's 0%. ND+Timer also leads on price (Free vs $0.99) and update cadence (every 2 months vs every 10 months). NDCalc2's advantage is in-app purchases (none vs 1) and iOS requirement (7.0 vs 15.6). On ads and device support there is nothing between them.

ND+Timer is free to download; NDCalc2 costs $0.99 up front. ND+Timer sells 1 one-off in-app purchase. NDCalc2 asks for nothing beyond the download.

NDCalc2 ships an update every 10 months, ND+Timer every 2 months. The most recent releases landed on September 21, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | NDCalc2 | ND+Timer |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[1.5 (2 ratings)](https://appshunter.io/ios/app/ndcalc2/id822835884/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | **60.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 20 MB | 9 MB |
| Requires iOS | **7.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Boris Nienke](https://appshunter.io/developer/300699195) | [Tobias Ullerich](https://appshunter.io/developer/1475365559) |

## What reviewers say

### NDCalc2

[App page](https://appshunter.io/ios/app/ndcalc2/id822835884)

Calculate correct exposure times when using ND filters for long exposures. Easily manage your filter collection, add custom filters, and switch between single and multi-select modes for stacking.

**Highlights:** Calculate exposure time with ND filters, Supports iPhone 5/s/c screens, Multi-Select Mode for filter stacking, Add custom ND filters, Delete and reorder filters, Countdown timer for long exposures

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

**In-app purchases:** none


### ND+Timer

[App page](https://appshunter.io/ios/app/nd-plus-timer/id1534477340)

This app helps photographers determine correct exposure times for long exposure shots using ND filters. It includes a timer to capture the perfect moment and offers pro features through in-app purchases for enhanced functionality.

**Highlights:** Exposure time calculation with ND filters, Integrated timer for capturing moments, Notifications while device is locked, Dark mode (Pro feature), Lock screen widget with running timer (Pro feature), Dynamic Island support (Pro feature), Automatic exposure computation for multiple filters (Pro feature)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ND+Timer Pro | $1.99 | one-time |


## Frequently asked questions

### Is NDCalc2 free?

NDCalc2 costs $0.99, with no in-app purchases.

### Is ND+Timer free?

ND+Timer is free to download, with in-app purchases available.

### Do NDCalc2 or ND+Timer have ads?

Neither NDCalc2 nor ND+Timer shows ads.

### Which is updated more often, NDCalc2 or ND+Timer?

NDCalc2 ships an update every 10 months, and ND+Timer every 2 months. Most recently, NDCalc2 was updated on September 21, 2026 and ND+Timer on September 20, 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.*