# Reciprocity Timer vs ObscuraFlex

The clearest difference is review sentiment: ObscuraFlex at 100% against Reciprocity Timer's 33%. ObscuraFlex also leads on price (Free vs $1.99) and rating (5.0 vs 2.5). Reciprocity Timer's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 18.0). On ratings volume, update cadence and ads there is nothing between them.

ObscuraFlex is free to download; Reciprocity Timer costs $1.99 up front. Reciprocity Timer sells 1 one-off in-app purchase. ObscuraFlex asks for nothing beyond the download.

ObscuraFlex holds the better App Store score, 5.0 against 2.5. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews point the same way: 33% of Reciprocity Timer's written reviews are positive against 100% of ObscuraFlex's.

Reciprocity Timer ships an update every 2 months, ObscuraFlex every 5 weeks. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Reciprocity Timer | ObscuraFlex |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [2.5 (4 ratings)](https://appshunter.io/ios/app/reciprocity-timer/id459691262/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/obscuraflex/id6503669130/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 28 MB | 1 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pump Interactive](https://appshunter.io/developer/459691265) | [Toby Wilkins](https://appshunter.io/developer/1749901957) |

## What reviewers say

### Reciprocity Timer

[App page](https://appshunter.io/ios/app/reciprocity-timer/id459691262)

This app helps film photographers calculate exposure compensation for reciprocity failure. It offers a standard version for basic calculations and a pro version with advanced features like note-taking and custom film databases. It also includes an exposure timer and filter compensation tools.

**Highlights:** Reciprocity compensation calculations, Exposure timer, Filter compensation slider, Note-keeping feature, Custom film and camera databases, Film stock favorites

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reciprocity Timer Pro | $9.99 | one-time |


### 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 Reciprocity Timer free?

Reciprocity Timer costs $1.99, and also offers in-app purchases.

### Is ObscuraFlex free?

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

### Which has better reviews, Reciprocity Timer or ObscuraFlex?

ObscuraFlex is rated higher. Reciprocity Timer averages 2.5 out of 5 from 4 ratings, while ObscuraFlex averages 5.0 from 2 ratings.

### Do Reciprocity Timer or ObscuraFlex have ads?

Neither Reciprocity Timer nor ObscuraFlex shows ads.

### Which is updated more often, Reciprocity Timer or ObscuraFlex?

Reciprocity Timer ships an update every 2 months, and ObscuraFlex every 5 weeks. Most recently, Reciprocity Timer was updated on October 13, 2026 and ObscuraFlex on October 7, 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.*