# LensTutorial vs DOF Slider

The clearest difference is rating: DOF Slider at 3.6 against LensTutorial's 2.9. DOF Slider also leads on update cadence (every 4 weeks vs every 7 months) and ratings volume (21 vs 7). LensTutorial's advantage is iOS requirement (10.0 vs 15.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. LensTutorial sells 4 one-off in-app purchases and DOF Slider sells 13 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

DOF Slider holds the better App Store score, 3.6 against 2.9. Both are backed by a comparable volume of ratings — 7 and 21 respectively. Written reviews complicate that: 50% of LensTutorial's written reviews are positive against 47% of DOF Slider's, so the app with the better star average is not the one people write more warmly about.

LensTutorial ships an update every 7 months, DOF Slider every 4 weeks. The most recent releases landed on September 10, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | LensTutorial | DOF Slider |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (7 ratings)](https://appshunter.io/ios/app/lenstutorial/id500543869/reviews) | **[3.6 (21 ratings)](https://appshunter.io/ios/app/dof-slider/id654949121/reviews)** |
| Number of ratings | 7 | **21** |
| Positive reviews | **50.0% of reviews** | 47.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 7 MB | 31 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alf Jorgen Bratane](https://appshunter.io/developer/894390036) | [Mihai alexandru Bold](https://appshunter.io/developer/863433362) |

## What reviewers say

### LensTutorial

[App page](https://appshunter.io/ios/app/lenstutorial/id500543869)

Learn photographic lens usage with interactive simulations and calculations. Visualize effects of lens controls and estimate parameters like angle of view and depth of field easily. Supports all modern cameras.

**Highlights:** Interactive lens simulations, Depth of field calculator, Angle of view estimation, 35-mm equivalent calculation, Subject magnification display, Support for modern cameras

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Aperture upgrade | $0.99 | one-time |
| Zoom upgrade | $0.99 | one-time |
| Distance upgrade | $0.99 | one-time |
| Built-In lens | $1.99 | one-time |


### DOF Slider

[App page](https://appshunter.io/ios/app/dof-slider/id654949121)

This app calculates depth of field for photography. Select your camera, distance, aperture, and lens using intuitive sliders to instantly see your perfect shot settings. Supports metric and imperial units, a wide range of apertures, focal lengths, and hundreds of camera models.

**Highlights:** Extensive camera model selection, Adjustable distance, aperture, and lens sliders, Instant depth of field calculations, Metric and imperial unit support, Wide aperture and focal length range, Customization via in-app purchases

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kill the ads | $0.99 | one-time |
| Canon 5D series | $0.99 | one-time |
| Canon 6D series | $0.99 | one-time |
| Fujifilm X1 series | $0.99 | one-time |
| Macro Distances | $0.99 | one-time |
| Fujifilm XT series | $1.99 | one-time |
| Leica M series | $1.99 | one-time |
| Nikon D700 pack | $1.99 | one-time |
| Nikon D800 series | $1.99 | one-time |
| Sony A7 series | $1.99 | one-time |
| Nikon D7000 series | $1.99 | one-time |
| Canon EOS R | $2.99 | one-time |
| Nikon Z Pack | $2.99 | one-time |


## Frequently asked questions

### Is LensTutorial free?

LensTutorial is free to download, with in-app purchases available.

### Is DOF Slider free?

DOF Slider is free to download, with in-app purchases available.

### Which has better reviews, LensTutorial or DOF Slider?

DOF Slider is rated higher. LensTutorial averages 2.9 out of 5 from 7 ratings, while DOF Slider averages 3.6 from 21 ratings.

### Do LensTutorial or DOF Slider have ads?

Neither LensTutorial nor DOF Slider shows ads.

### Which is updated more often, LensTutorial or DOF Slider?

LensTutorial ships an update every 7 months, and DOF Slider every 4 weeks. Most recently, LensTutorial was updated on September 10, 2026 and DOF Slider 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.*