# SlowLightMeter vs Darkroom Assistant

The clearest difference is in-app purchases: SlowLightMeter at none against Darkroom Assistant's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Darkroom Assistant sells 1 in-app purchase, starting at $39.99 per year. SlowLightMeter asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 8, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | SlowLightMeter | Darkroom Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/slowlightmeter/id6751812869/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | Every 4 days |
| Monetization | Free | — |
| Size | 1 MB | 54 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ari Jaaksi](https://appshunter.io/developer/1770069317) | [Distinction Photo LLC](https://appshunter.io/developer/1868141640) |

## What reviewers say

### SlowLightMeter

[App page](https://appshunter.io/ios/app/slowlightmeter/id6751812869)

This app provides a simple and accurate light meter for film photographers. It continuously measures light with minimal interaction and includes an ISO lock to prevent accidental changes. EV values are a core feature for ease of use.

**Highlights:** Reflective and incident light metering, Continuous light measurement, ISO lock, EV value display, Simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Darkroom Assistant

[App page](https://appshunter.io/ios/app/darkroom-assistant/id6757661002)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Darkroom Assistant Standard | $39.99 | per year |


## Frequently asked questions

### Is SlowLightMeter free?

SlowLightMeter is free to download, with no in-app purchases.

### Is Darkroom Assistant free?

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

### Do SlowLightMeter or Darkroom Assistant have ads?

Neither SlowLightMeter nor Darkroom Assistant shows ads.

### Which is updated more often, SlowLightMeter or Darkroom Assistant?

SlowLightMeter ships an update every 4 days, and Darkroom Assistant every 4 days. Most recently, SlowLightMeter was updated on October 8, 2026 and Darkroom Assistant on September 27, 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.*