# f8 Lens Toolkit vs Leo3 Smart

The clearest difference is price: Leo3 Smart at Free against f8 Lens Toolkit's $9.99. Leo3 Smart also leads on iOS requirement (12.0 vs 16.0). f8 Lens Toolkit's advantage is review sentiment (80% vs 50%) and ratings volume (26 vs 1). On rating, update cadence, ads and in-app purchases there is nothing between them.

Leo3 Smart 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.

On the App Store both sit at effectively the same score — 4.9 for f8 Lens Toolkit against 5.0 for Leo3 Smart. That said, the two scores are not equally well evidenced: f8 Lens Toolkit has 26 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 80% of f8 Lens Toolkit's written reviews are positive against 50% of Leo3 Smart's.

f8 Lens Toolkit ships an update every 2 months, Leo3 Smart every 3 months. The most recent releases landed on October 26, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | f8 Lens Toolkit | Leo3 Smart |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [4.9 (26 ratings)](https://appshunter.io/ios/app/f8-lens-toolkit/id887877435/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/leo3-smart/id1133091493/reviews)** |
| Number of ratings | **26** | 1 |
| Positive reviews | **79.5% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | **Free** |
| Size | 4 MB | 14 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Cadrage GmbH](https://appshunter.io/developer/793232743) | [Fabio Benvenuti](https://appshunter.io/developer/1133091492) |

## What reviewers say

### f8 Lens Toolkit

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

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


### Leo3 Smart

[App page](https://appshunter.io/ios/app/leo3-smart/id1133091493)

Capture stunning underwater photos and videos with your smartphone. This app allows manual control of camera settings, switching between photo and video modes, and even taking underwater selfies. It also features a power-saving mode and can charge your phone while diving.

**Highlights:** Smartphone housing pairing via Bluetooth, Manual camera adjustments (ISO, HDR, White Balance), Switch between photo and video modes, Underwater selfie mode, Power saving mode, Integrated charging for iPhone

**In-app purchases:** none


## Frequently asked questions

### Is f8 Lens Toolkit free?

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

### Is Leo3 Smart free?

Leo3 Smart is free to download, with no in-app purchases.

### Which has better reviews, f8 Lens Toolkit or Leo3 Smart?

Leo3 Smart is rated higher. f8 Lens Toolkit averages 4.9 out of 5 from 26 ratings, while Leo3 Smart averages 5.0 from 1 ratings.

### Do f8 Lens Toolkit or Leo3 Smart have ads?

Neither f8 Lens Toolkit nor Leo3 Smart shows ads.

### Which is updated more often, f8 Lens Toolkit or Leo3 Smart?

f8 Lens Toolkit ships an update every 2 months, and Leo3 Smart every 3 months. Most recently, f8 Lens Toolkit was updated on October 26, 2026 and Leo3 Smart on October 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.*