# Calibration Plus vs Simple Passe

The clearest difference is price: Simple Passe at Free against Calibration Plus's $2.99. Simple Passe also leads on 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, update cadence, ads and in-app purchases there is nothing between them.

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

Simple Passe holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

Calibration Plus ships an update every 21 months, Simple Passe every 12 months. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Calibration Plus | Simple Passe |
| --- | --- | --- |
| 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/simple-passe/id6717616678/reviews)** |
| Number of ratings | 2 | 2 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 12 months** |
| 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) | [Ari Jaaksi](https://appshunter.io/developer/1770069317) |

## 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


### Simple Passe

[App page](https://appshunter.io/ios/app/simple-passe/id6717616678)

Easily add custom borders to your photos. Select border color and width, then apply to any image. The app saves a new image with borders, perfect for enhancing your social media galleries with an elegant look.

**Highlights:** Add custom borders, Select border color, Adjust border width, Save bordered images, Enhance social media photos

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

**In-app purchases:** none


## Frequently asked questions

### Is Calibration Plus free?

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

### Is Simple Passe free?

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

### Which has better reviews, Calibration Plus or Simple Passe?

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

### Do Calibration Plus or Simple Passe have ads?

Neither Calibration Plus nor Simple Passe shows ads.

### Which is updated more often, Calibration Plus or Simple Passe?

Calibration Plus ships an update every 21 months, and Simple Passe every 12 months. Most recently, Calibration Plus was updated on October 14, 2026 and Simple Passe on October 8, 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.*