# f/ Tools vs SIRUI Master

The clearest difference is price: SIRUI Master at Free against f/ Tools's $3.99. SIRUI Master also leads on iOS requirement (8.0 vs 17.0). f/ Tools's advantage is update cadence (every 2 weeks vs every 2 months). On ads, in-app purchases and device support there is nothing between them.

SIRUI Master is free to download; f/ Tools costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

f/ Tools ships an update every 2 weeks, SIRUI Master every 2 months. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | f/ Tools | SIRUI Master |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[3.7 (6 ratings)](https://appshunter.io/ios/app/f-tools-photo-calculator/id668237473/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 93.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Paid | — |
| Size | 5 MB | 41 MB |
| Requires iOS | 17.0 | **8.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [David Quiles](https://appshunter.io/developer/578971109) | [思锐](https://appshunter.io/developer/1173182440) |

## What reviewers say

### f/ Tools

[App page](https://appshunter.io/ios/app/f-tools-photo-calculator/id668237473)

This photography tool offers a suite of calculators for concepts like depth of field, print resolution, and flash exposure. It helps users visually grasp complex photographic principles with integrated help and a glossary. The app also includes a camera bag feature with lens limits.

**Highlights:** Graphic depth of field calculator, Graphic Airy disc calculator, Graphic format calculator, Motion freeze calculator, Graphic blur size calculator, Graphic flash exposure calculator, Camera bag with lens limits

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

**In-app purchases:** none


### SIRUI Master

[App page](https://appshunter.io/ios/app/sirui-master/id1543142687)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is f/ Tools free?

f/ Tools costs $3.99, with no in-app purchases.

### Is SIRUI Master free?

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

### Do f/ Tools or SIRUI Master have ads?

Neither f/ Tools nor SIRUI Master shows ads.

### Which is updated more often, f/ Tools or SIRUI Master?

f/ Tools ships an update every 2 weeks, and SIRUI Master every 2 months. Most recently, f/ Tools was updated on October 16, 2026 and SIRUI Master on October 9, 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.*