# Reciprocity Plus vs Viewfinder Preview

The clearest difference is rating: Viewfinder Preview at 4.7 against Reciprocity Plus's 4.1. Viewfinder Preview also leads on ratings volume (295 vs 7) and review sentiment (86% vs 70%). Reciprocity Plus's advantage is price ($1.99 vs $4.99). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Reciprocity Plus costs $1.99 and Viewfinder Preview $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Viewfinder Preview holds the better App Store score, 4.7 against 4.1. That said, the two scores are not equally well evidenced: Viewfinder Preview has 295 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 70% of Reciprocity Plus's written reviews are positive against 86% of Viewfinder Preview's.

Reciprocity Plus ships an update every 4 months, Viewfinder Preview every 3 months. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Reciprocity Plus | Viewfinder Preview |
| --- | --- | --- |
| Price | **$1.99** | $4.99 |
| Rating | [4.1 (7 ratings)](https://appshunter.io/ios/app/reciprocity-plus/id898649178/reviews) | **[4.7 (295 ratings)](https://appshunter.io/ios/app/viewfinder-preview/id1216484605/reviews)** |
| Number of ratings | 7 | **295** |
| Positive reviews | 70.0% of reviews | **86.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Paid | Paid |
| Size | 8 MB | 18 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Le bord de la piscine](https://appshunter.io/developer/456593417) | [Adam Fowler](https://appshunter.io/developer/1216484604) |

## What reviewers say

### Reciprocity Plus

[App page](https://appshunter.io/ios/app/reciprocity-plus/id898649178)

This app simplifies long exposure photography calculations for both digital and analog cameras. It includes a vast library of filter effects and reciprocity charts, allowing users to design or modify their own. A built-in timer ensures accurate exposure timing even when the app is not in use.

**Highlights:** Long exposure calculation, 29 filter effects (CTO, CTB, ND, etc.), 110+ reciprocity charts, Customizable chart design, Built-in timer, Support for digital and analog photography

**Features:** Vision Pro support

**In-app purchases:** none


### Viewfinder Preview

[App page](https://appshunter.io/ios/app/viewfinder-preview/id1216484605)

Preview camera framing for any camera and lens combination. Select film/sensor size and focal length to visualize framing before setting up your main camera. Ideal for photographers and filmmakers for pre-visualization, location scouting, and storyboarding.

**Highlights:** Camera and lens framing preview, Customizable film/sensor formats, Configurable light meter, Photo capture with metadata, Photo gallery with data display, Album and PDF creation, Film stock emulation

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

**In-app purchases:** none

**What reviewers like**

- 📸 Excellent film emulation and visualization
- 💡 Comprehensive light meter functionality
- 📝 Useful note-taking and shot logging features
- 🎯 Customizable camera formats and focal lengths
- 👍 Intuitive interface and easy to use

**What reviewers complain about**

- 🐛 App crashes and white screen issues
- 🔋 High battery consumption
- 📱 Poor image resolution and quality
- ⚠️ Limited focal length range (35mm minimum)
- 🎬 Focal length accuracy issues on newer iPhones

**Reported bugs**

- White screen on startup
- App crashes repeatedly
- Exposure offset resets when app closes
- Notes and shot data disappear after weeks
- In-app purchase screen loops indefinitely

**Requested features**

- Embed camera/lens metadata directly in saved images
- Save custom film stock names
- Persistent exposure offset settings
- More film stock options (Kodak Gold 200, Fuji 400H, Catlabs 320 Pro, Ilford XP2, etc.)
- Lower ISO settings (support for ISO 0.5 and below)


## Frequently asked questions

### Is Reciprocity Plus free?

Reciprocity Plus costs $1.99, with no in-app purchases.

### Is Viewfinder Preview free?

Viewfinder Preview costs $4.99, with no in-app purchases.

### Which has better reviews, Reciprocity Plus or Viewfinder Preview?

Viewfinder Preview is rated higher. Reciprocity Plus averages 4.1 out of 5 from 7 ratings, while Viewfinder Preview averages 4.7 from 295 ratings.

### Do Reciprocity Plus or Viewfinder Preview have ads?

Neither Reciprocity Plus nor Viewfinder Preview shows ads.

### Which is updated more often, Reciprocity Plus or Viewfinder Preview?

Reciprocity Plus ships an update every 4 months, and Viewfinder Preview every 3 months. Most recently, Reciprocity Plus was updated on September 23, 2026 and Viewfinder Preview on September 21, 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.*