# Calibration Plus vs ObscuraFlex

The clearest difference is review sentiment: ObscuraFlex at 100% against Calibration Plus's 50%. ObscuraFlex also leads on price (Free vs $2.99) and rating (5.0 vs 3.0). Calibration Plus's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 18.0). On ratings volume, ads and in-app purchases there is nothing between them.

ObscuraFlex is free to download; Calibration Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ObscuraFlex holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 50% of Calibration Plus's written reviews are positive against 100% of ObscuraFlex's.

Calibration Plus ships an update every 21 months, ObscuraFlex every 5 weeks. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Calibration Plus | ObscuraFlex |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/calibration-plus/id1414916538/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/obscuraflex/id6503669130/reviews)** |
| Number of ratings | 2 | 2 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 5 weeks** |
| Monetization | Paid | **Free** |
| Size | 14 MB | 1 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Le bord de la piscine](https://appshunter.io/developer/456593417) | [Toby Wilkins](https://appshunter.io/developer/1749901957) |

## What reviewers say

### Calibration Plus

[App page](https://appshunter.io/ios/app/calibration-plus/id1414916538)

This app aids in creating digital negatives for alternate process printing, offering fine tone control. It helps achieve better prints with improved dark, white, and halftone tones by designing correction curves. Generate reference charts and use image processing software to refine your digital negatives for perfect prints.

**Highlights:** Fine tone control for digital negatives, Correction curve design, Reference chart generation, Alternate process printing aid, Improved print quality

**Features:** Vision Pro support

**In-app purchases:** none


### ObscuraFlex

[App page](https://appshunter.io/ios/app/obscuraflex/id6503669130)

This app provides a high-resolution, right-side-up live feed of your large format camera's image plane. It enhances composition and focusing, offering greater detail and clarity than a standard ground glass. Use it to shoot stills, video, or reference images alongside your film negatives.

**Highlights:** High-resolution live feed, Right-side-up image display, Composition and focusing aid, Supports various large format cameras, Capture stills and video, Reference image creation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calibration Plus free?

Calibration Plus costs $2.99, with no in-app purchases.

### Is ObscuraFlex free?

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

### Which has better reviews, Calibration Plus or ObscuraFlex?

ObscuraFlex is rated higher. Calibration Plus averages 3.0 out of 5 from 2 ratings, while ObscuraFlex averages 5.0 from 2 ratings.

### Do Calibration Plus or ObscuraFlex have ads?

Neither Calibration Plus nor ObscuraFlex shows ads.

### Which is updated more often, Calibration Plus or ObscuraFlex?

Calibration Plus ships an update every 21 months, and ObscuraFlex every 5 weeks. Most recently, Calibration Plus was updated on October 14, 2026 and ObscuraFlex on October 7, 2026.

---

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