# Long Exposure Timer vs James Owl Calc

The clearest difference is price: James Owl Calc at Free against Long Exposure Timer's $1.99. James Owl Calc also leads on update cadence (weekly vs every 23 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

James Owl Calc is free to download; Long Exposure Timer costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Long Exposure Timer ships an update every 23 months, James Owl Calc weekly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Long Exposure Timer | James Owl Calc |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/james-owl-calc/id6667115988/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Weekly** |
| Monetization | — | Free |
| Size | 2 MB | 32 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peter Holdmann](https://appshunter.io/developer/1053342563) | [James Zhen Yu](https://appshunter.io/developer/1723033163) |

## What reviewers say

### Long Exposure Timer

[App page](https://appshunter.io/ios/app/long-exposure-timer/id1564211090)

**Features:** Apple Watch app

**In-app purchases:** none


### James Owl Calc

[App page](https://appshunter.io/ios/app/james-owl-calc/id6667115988)

This tool helps landscape photographers calculate precise camera settings for long exposure shots. It recommends ND filter combinations, aperture, and ISO based on your current settings and desired effect. Features include tutorials and camera-specific adjustments.

**Highlights:** Precise exposure calculations for ND filters, Reverse calculation mode, Smart adaptive technology for light changes, Built-in countdown timer with audio alerts, Camera-specific settings, Long exposure technique tutorials

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Long Exposure Timer free?

Long Exposure Timer costs $1.99, with no in-app purchases.

### Is James Owl Calc free?

James Owl Calc is free to download, with no in-app purchases.

### Do Long Exposure Timer or James Owl Calc have ads?

Neither Long Exposure Timer nor James Owl Calc shows ads.

### Which is updated more often, Long Exposure Timer or James Owl Calc?

Long Exposure Timer ships an update every 23 months, and James Owl Calc weekly. Most recently, Long Exposure Timer was updated on November 3, 2026 and James Owl Calc on November 4, 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.*