# f8 Lens Toolkit vs ARRI ECS

The clearest difference is price: ARRI ECS at Free against f8 Lens Toolkit's $9.99. f8 Lens Toolkit's advantage is update cadence (every 2 months vs every 14 months) and chart position (#153 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ARRI ECS is free to download; f8 Lens Toolkit costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

f8 Lens Toolkit ships an update every 2 months, ARRI ECS every 14 months. The most recent releases landed on October 29, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | f8 Lens Toolkit | ARRI ECS |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.9 (26 ratings)](https://appshunter.io/ios/app/f8-lens-toolkit/id887877435/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | 79.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 14 months |
| Monetization | Paid | — |
| Best chart rank | **#153** | — |
| Size | 4 MB | 23 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cadrage GmbH](https://appshunter.io/developer/793232743) | [ARRI Group](https://appshunter.io/developer/733009342) |

## What reviewers say

### f8 Lens Toolkit

[App page](https://appshunter.io/ios/app/f8-lens-toolkit/id887877435)

**Currently charting:** #153 Top Paid · Photo & Video (US App Store)

This app provides photographers and cinematographers with essential tools for optical calculations. It offers features like depth of field calculation, field of view determination, and lens matching for various camera formats. It's designed to be an indispensable reference tool for professionals and students alike.

**Highlights:** Depth of Field & Hyperfocal Distance Calculator, Field of View Calculator, Lens Matcher: Equivalent Focal Length & F-Stop, Camera Sensor Comparison Tool, Lens Coverage Tool, Extensive camera and lens database, Supports anamorphic shooting and Speedboosters

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

**In-app purchases:** none


### ARRI ECS

[App page](https://appshunter.io/ios/app/arri-ecs/id1555674483)

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

**In-app purchases:** none


## Frequently asked questions

### Is f8 Lens Toolkit free?

f8 Lens Toolkit costs $9.99, with no in-app purchases.

### Is ARRI ECS free?

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

### Do f8 Lens Toolkit or ARRI ECS have ads?

Neither f8 Lens Toolkit nor ARRI ECS shows ads.

### Which is updated more often, f8 Lens Toolkit or ARRI ECS?

f8 Lens Toolkit ships an update every 2 months, and ARRI ECS every 14 months. Most recently, f8 Lens Toolkit was updated on October 29, 2026 and ARRI ECS on September 19, 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.*