# Focus Chart — Check Focus & Test Lenses

> Focus chart tool for camera lens testing and back focus adjustment. (iPhone/iPad app by Cadrage GmbH.)

- Source: https://appshunter.io/ios/app/focus-chart/id808174720 (this page in markdown: same URL + `.md`)
- Developer: [Cadrage GmbH](https://appshunter.io/developer/793232743)
- Category: Photo & Video, Productivity
- Price: Free
- Rating: 4.40/5 from 9 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 44 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2014-02-04
- Data updated: 2026-08-12
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/focus-chart/id808174720/reviews.md

## What is Focus Chart?

This app displays two different focus charts with a siemens star. It prevents the phone from going to stand-by while you're adjusting the back focus of your camera or testing your lenses. Swipe left and right two switch between the two charts.

It's a simple yet effective tool for cinematographers, photographers and camera assistants.

## Key features

- Two focus charts with siemens star
- Prevents device standby
- Back focus adjustment
- Lens testing
- Swipe left/right for chart switching

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/focus-chart/id808174720/reviews.md

### 5/5 — Просто. Удобно.

*2024-03-20*

Классное приложение для фокуса. Можно и в галерее хранить схожие картинки, но в виде приложения удобнее.

**Developer response:** Спасибо

### 5/5 — Excellent Siemens Star utility! 🦋

*2023-12-04*

A simple (yet elegant and useful) Siemens Star focusing utility for quickly checking camera focus/lenses ad hoc when you don’t have your expensive Calibrite/DSC-Labs target to hand (right at a particular moment); as you can guarantee you’ll have either your iPhone (and/or) iPad nearby regardless!

**Developer response:** Thank you for your nice review ☺️

### 5/5 — Cool app

*2023-11-24*

This app called focus chart has two different styles

**Developer response:** Thank you! 🤗

### 5/5 — Amazing

*2020-11-14*

Finally, a company that isn’t charging $100+ for a back focus chart. Definitely worth it if back focus is within your realm of concerns.

### 4/5 — Zeiss Star

*2020-10-12*

A Zeiss-Star would be a really handy addition. Great app though!

### 5/5 — Sweet and simple!

*2019-08-09*

Thank you for creating a sweet and simple app without any baggage!

## Frequently asked questions about Focus Chart

### What is Focus Chart used for?

Focus Chart is used to display focus charts with a siemens star, helping cinematographers and photographers adjust the back focus of their cameras and test lenses.

### Does Focus Chart have ads?

No, Focus Chart does not contain advertisements, providing an uninterrupted experience for users.

### What devices is Focus Chart compatible with?

Focus Chart is available for iPhone, iPad, and iPod devices, making it accessible to a wide range of Apple users.

### How often is Focus Chart updated?

The latest version of Focus Chart is 2.0, which was last updated on November 14, 2019. Users can expect a stable and reliable tool.

### What is the age rating for Focus Chart?

Focus Chart has an age rating of 4+, indicating it is suitable for a general audience.

### Can I switch between different focus charts in Focus Chart?

Yes, Focus Chart allows you to easily switch between two different focus charts by swiping left or right.

### Is Focus Chart free to download?

Yes, Focus Chart is available for free, offering valuable functionality without any cost to the user.

### What do users think of Focus Chart?

Focus Chart is well-regarded, holding a rating of 4.4 stars from 9 ratings, suggesting positive user sentiment.

## Version history (last 5 releases)

### 2.0 — 2019-11-14

Layout optimizations

### 1.3 — 2017-02-28

- New charts with higher resolution
- Swipe left and right two switch between the two charts

### 1.2 — 2015-09-03

Minor bugfixes

### 1.1 — 2014-07-13

Minor bug fixes

### 1.0 — 2014-02-04

No release notes.

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| --- | --- | --- | --- |
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| [Pocket Light Meter](https://appshunter.io/ios/app/pocket-light-meter/id381698089) | 4.5 (1,045) | $9.99 | Photo & Video |
| [Manual Camera – Focus, ISO, WB](https://appshunter.io/ios/app/manual-camera-focus-iso-wb/id1543743256) | 4.3 (357) | Free | Photo & Video |
| [MOZA Master](https://appshunter.io/ios/app/moza-master/id1441639746) | 2.8 (24) | Free | Photo & Video |
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## More apps by Cadrage GmbH

- [Cadrage Director's Viewfinder](https://appshunter.io/ios/app/cadrage-directors-viewfinder/id793232740)
- [f8 Lens Toolkit](https://appshunter.io/ios/app/f8-lens-toolkit/id887877435)
- [Cadrage Studio](https://appshunter.io/ios/app/cadrage-studio/id1569815341)

All apps by Cadrage GmbH: https://appshunter.io/developer/793232743

## Related topics

[sdirc focus](https://appshunter.io/ios/topics/sdirc-focus)

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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 2026-08-12.*