# Imatest Spectral Sensor vs f/64

The clearest difference is update cadence: f/64 at every 5 days against Imatest Spectral Sensor's every 6 weeks. f/64 also leads on ratings volume (11 vs 1). Imatest Spectral Sensor's advantage is device support (3 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Imatest Spectral Sensor holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: f/64 has 11 ratings behind it against 1, so its average is the more settled of the two.

Imatest Spectral Sensor ships an update every 6 weeks, f/64 every 5 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Imatest Spectral Sensor | f/64 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/imatest-spectral-sensor/id6762022859/reviews)** | [4.8 (11 ratings)](https://appshunter.io/ios/app/f64-raw-camera/id6794889919/reviews) |
| Number of ratings | 1 | **11** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | Free | Free |
| Size | 1 MB | 3 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Imatest, LLC](https://appshunter.io/developer/1892503615) | [David Petrosyan](https://appshunter.io/developer/859396218) |

## What reviewers say

### Imatest Spectral Sensor

[App page](https://appshunter.io/ios/app/imatest-spectral-sensor/id6762022859)

This professional tool provides precise lighting analysis for calibrating camera systems and matching lights. It offers real-time data, advanced visualizations, and data portability for accurate exposure and color science.

**Highlights:** Multi-sensor dashboard, Comprehensive metrics (Lux, CCT, CRI), Advanced spectral visualizations, Illuminance tracking, Data portability (CSV export), Mock sensor analysis

**Features:** Vision Pro support

**In-app purchases:** none


### f/64

[App page](https://appshunter.io/ios/app/f64-raw-camera/id6794889919)

Capture true RAW photos with full manual camera controls. This app offers professional tools like focus peaking and histograms without any AI processing. It's designed for photographers who want an honest, untouched image.

**Highlights:** True Bayer RAW (DNG) capture, Full manual controls (shutter, ISO, focus), Focus peaking and loupe, Live luminance histogram, RAW exposure bracketing, Subject tracking and AE/AF lock

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

**In-app purchases:** none


## Frequently asked questions

### Is Imatest Spectral Sensor free?

Imatest Spectral Sensor is free to download, with no in-app purchases.

### Is f/64 free?

f/64 is free to download, with no in-app purchases.

### Which has better reviews, Imatest Spectral Sensor or f/64?

Imatest Spectral Sensor is rated higher. Imatest Spectral Sensor averages 5.0 out of 5 from 1 ratings, while f/64 averages 4.8 from 11 ratings.

### Do Imatest Spectral Sensor or f/64 have ads?

Neither Imatest Spectral Sensor nor f/64 shows ads.

### Which is updated more often, Imatest Spectral Sensor or f/64?

Imatest Spectral Sensor ships an update every 6 weeks, and f/64 every 5 days. Most recently, Imatest Spectral Sensor was updated on October 31, 2026 and f/64 on October 31, 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.*