# Exposure Calculator vs LightStop

The clearest difference is price: LightStop at Free against Exposure Calculator's $0.99. LightStop also leads on update cadence (fortnightly vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

LightStop is free to download; Exposure Calculator costs $0.99 up front. Exposure Calculator sells 3 one-off in-app purchases and LightStop sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Exposure Calculator ships an update every 2 months, LightStop fortnightly. The most recent releases landed on October 15, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Exposure Calculator | LightStop |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[3.8 (5 ratings)](https://appshunter.io/ios/app/exposure-calculator/id359149599/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 64.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Paid | — |
| Size | 18 MB | 40 MB |
| Requires iOS | 15.6 | **14.0.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Essence Computing](https://appshunter.io/developer/333177404) | [Albert Bove Gracia](https://appshunter.io/developer/6776248501) |

## What reviewers say

### Exposure Calculator

[App page](https://appshunter.io/ios/app/exposure-calculator/id359149599)

This app helps photographers determine the correct shutter speed by calculating exposure values based on lighting conditions, f-stop, and ISO. It provides more accurate results than traditional tables, accounting for all f-stop and ISO values.

**Highlights:** Shutter speed calculation, Accurate f-stop and ISO input, Four lighting condition types, Exposure Value (EV) calculation, Comparison to standard tables, Precise value determination

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchase Depth of Field Calculator | $0.99 | one-time |
| Purchase Depth of Field Variants | $0.99 | one-time |
| Purchase EXIF Manager | $1.99 | one-time |


### LightStop

[App page](https://appshunter.io/ios/app/lightstop/id6776248499)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LightStop Pro Monthly | $6.99 | per month |
| LightStop Pro Yearly | $49.99 | per year |


## Frequently asked questions

### Is Exposure Calculator free?

Exposure Calculator costs $0.99, and also offers in-app purchases.

### Is LightStop free?

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

### Do Exposure Calculator or LightStop have ads?

Neither Exposure Calculator nor LightStop shows ads.

### Which is updated more often, Exposure Calculator or LightStop?

Exposure Calculator ships an update every 2 months, and LightStop fortnightly. Most recently, Exposure Calculator was updated on October 15, 2026 and LightStop on September 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*