# f/ Tools: Photo Calculator — user reviews

> 15 indexed App Store user reviews of f/ Tools by David Quiles, rated 3.67/5 from 6 ratings.

- Source: https://appshunter.io/ios/app/f-tools-photo-calculator/id668237473/reviews
- App overview in markdown: https://appshunter.io/ios/app/f-tools-photo-calculator/id668237473.md
- Rating breakdown: 5★ 3 · 4★ 0 · 3★ 2 · 2★ 0 · 1★ 1

## Is f/ Tools safe?

Not enough ratings yet to assess f/ Tools.

## Is f/ Tools legit?

f/ Tools: Photo Calculator appears to be a legitimate app. The AppsHunter Legitimacy Score for f/ Tools is 90 out of 100 points across 7 verification signals from App Store and developer data.

## Newest reviews (3 of 15)

### 5/5 — Cheap, useful and clear, great learning tool too

*2017-08-27*

Ideal for artists, or nerds, or students :) I love it, being all of this :) hope it'll still work with ios11 though ^^

### 5/5 — awsome app

*2014-03-14*

。。

### 5/5 — Grandissima app

*2014-03-06, version 2.0*

Con l'ultimo aggiornamento è perfetta, un vero must. Completissima.

## Most critical reviews (10 lowest-rated)

### 1/5 — Crashing all the time - waist of time and $1

*2020-10-11*

Crashing on most of tools and pages.

### 4/5 — Good app, works; but needs porting to latest iOS

*2016-11-01*

First impressions:App has simple interface. However, it seems was last updated in 2014.

upon opening it, iOS 10 pops a warning stating app may slow down iPhone as it's not updated for compatibility with latest iOS  versions

### 5/5 — Very useful app

*2026-09-16*

Easy to use and full of useful tools and options for the ambitional photograph who does not want to make only automatic snapshots with his camera.

### 5/5 — Like

*2026-06-15*

Simple, straightforward, and super useful.

### 5/5 — Very useful app

*2026-06-07*

Easy to use and full of useful tools and options for the ambitional photograph who does not want to make only automatic snapshots with his camera.

### 5/5 — Superb photographic calculator

*2026-01-13*

Most photographers know that a wide open aperture is one of the things (along with focal length and camera-to-subject distance) that reduces depth-of-field. And that this can be used for creative effect. This handy calculator lets you explore the effects with different lenses and cameras. 

But did you know that diffraction effects at small f/stops significantly reduce the effective resolution of your high megapixel sensor? 

This is brilliant app from David Quiles really helps hone and fine-tune your understanding of the way your lens(es) and film or digital sensor(s) turn light into images. 

Bravo David. 

PS: I wish the lenses and cameras could be resorted in the lists. I don’t necessarily  want a new entry to appear at the bottom of the list!

### 5/5 — Awesome Tool !

*2023-02-15*

No more charts, calculation, conversion or guessing. All the photo planning tools are now at my fingertip, instantly. Marvelous !

### 5/5 — A helpful tool and competent support

*2022-01-12*

A comprehensive and very useful tool for all photographers. The developer's technical support is fast and qualified.

### 5/5 — Few years later and still love it!

*2021-05-21*

Well made and very useful.

### 5/5 — Semplicemente stupenda!

*2019-09-20, version 2.2*

Era davvero una cifra di tempo che cercavo un’app semplice e pratica da usare per quando scatto in analogico o comunque in manuale. 
Bhè questa è straordinaria! 
Pratica, semplice e completa. 
Con un layout minimale ed intuitivo ti permette di giocare con la terna focale/distanza/apertura mostrandoti al volo pdc, iperfocale ebokeh, ma anche molto altro...
Ed è anche disegnata in modo molto carino, vintage ed intrigante!

## Most praised reviews (2 highest-rated)

### 5/5 — Great App

*2019-07-24*

I’m relatively new to photography so this app has been a life saver and a learning tool. I highly recommend it to anyone trying to take the best picture they can.

### 5/5 — Perfect!

*2017-09-22*

The best of!

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-11.*