# HDR Easy vs Imatest Spectral Sensor

The clearest difference is rating: Imatest Spectral Sensor at 5.0 against HDR Easy's 4.5. Imatest Spectral Sensor also leads on in-app purchases (none vs 3). HDR Easy's advantage is ratings volume (4 vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. HDR Easy sells 3 one-off in-app purchases. Imatest Spectral Sensor asks for nothing beyond the download.

Imatest Spectral Sensor holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

HDR Easy ships an update every 5 weeks, Imatest Spectral Sensor every 6 weeks. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | HDR Easy | Imatest Spectral Sensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (4 ratings)](https://appshunter.io/ios/app/hdr-easy/id6745524653/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/imatest-spectral-sensor/id6762022859/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 1 MB |
| Requires iOS | **18.1** | 18.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Kasimir Szekeres Photography B.V.](https://appshunter.io/developer/1812700406) | [Imatest, LLC](https://appshunter.io/developer/1892503615) |

## What reviewers say

### HDR Easy

[App page](https://appshunter.io/ios/app/hdr-easy/id6745524653)

Transform SDR photos and videos into HDR for compatible displays. This app offers a simple workflow with one-tap conversion and optional tuning. It supports various input formats and outputs high-quality HDR content.

**Highlights:** SDR to HDR conversion, One-tap HDR for photos and videos, Optional contrast/saturation tuning, Supports various input formats (JPEG, PNG, HEIC, RAW, MP4, MOV), Batch processing (Pro version), 10-bit HEIC and HDR video output

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter | $3.99 | one-time |
| Pro Upgrade | $12.99 | one-time |
| Pro | $17.99 | one-time |


### 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


## Frequently asked questions

### Is HDR Easy free?

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

### Is Imatest Spectral Sensor free?

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

### Which has better reviews, HDR Easy or Imatest Spectral Sensor?

Imatest Spectral Sensor is rated higher. HDR Easy averages 4.5 out of 5 from 4 ratings, while Imatest Spectral Sensor averages 5.0 from 1 ratings.

### Do HDR Easy or Imatest Spectral Sensor have ads?

Neither HDR Easy nor Imatest Spectral Sensor shows ads.

### Which is updated more often, HDR Easy or Imatest Spectral Sensor?

HDR Easy ships an update every 5 weeks, and Imatest Spectral Sensor every 6 weeks. Most recently, HDR Easy was updated on October 24, 2026 and Imatest Spectral Sensor on October 9, 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.*