# CnR M.A.R.S. vs Long Camera Exposure Calc...

The clearest difference is in-app purchases: CnR M.A.R.S. at none against Long Camera Exposure Calc...'s 1. Long Camera Exposure Calc...'s advantage is update cadence (monthly vs every 38 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Long Camera Exposure Calc... sells 1 one-off in-app purchase. CnR M.A.R.S. asks for nothing beyond the download.

CnR M.A.R.S. ships an update every 38 months, Long Camera Exposure Calc... monthly. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CnR M.A.R.S. | Long Camera Exposure Calc... |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/long-camera-exposure-calc/id6474231152/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 38 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 17 MB | 39 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Allerup.Com AS](https://appshunter.io/developer/1465876722) | [Bhavinkumar Satashiya](https://appshunter.io/developer/1361485921) |

## What reviewers say

### CnR M.A.R.S.

[App page](https://appshunter.io/ios/app/cnr-mars/id1243473878)

**In-app purchases:** none


### Long Camera Exposure Calc...

[App page](https://appshunter.io/ios/app/long-camera-exposure-calc/id6474231152)

This tool helps photographers calculate optimal camera settings for well-exposed images. It assists in balancing aperture, shutter speed, and ISO for creative control and efficiency in various lighting conditions.

**Highlights:** Optimal exposure calculation, Balances aperture, shutter speed, ISO, Creative control over image, Adaptable to lighting conditions, Learning tool for beginners, Bracketing assistance

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Premium! | $4.99 | one-time |


## Frequently asked questions

### Is CnR M.A.R.S. free?

CnR M.A.R.S. is free to download, with no in-app purchases.

### Is Long Camera Exposure Calc... free?

Long Camera Exposure Calc... is free to download, with in-app purchases available.

### Do CnR M.A.R.S. or Long Camera Exposure Calc... have ads?

Neither CnR M.A.R.S. nor Long Camera Exposure Calc... shows ads.

### Which is updated more often, CnR M.A.R.S. or Long Camera Exposure Calc...?

CnR M.A.R.S. ships an update every 38 months, and Long Camera Exposure Calc... monthly. Most recently, CnR M.A.R.S. was updated on October 11, 2026 and Long Camera Exposure Calc... on October 24, 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.*