# Sader Method

> Calibrates Atomic Force Microscope cantilevers using resonant frequency and quality factor. (iPhone/iPad app by John Sader.)

- Source: https://appshunter.io/ios/app/sader-method/id402544930 (this page in markdown: same URL + `.md`)
- Developer: [John Sader](https://appshunter.io/developer/402544933)
- Category: Utilities, Education
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.4 · 2 MB
- Languages: American English
- Released: 2010-11-12
- Data updated: 2026-06-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/sader-method/id402544930/reviews.md

## What is Sader Method?

Calibrate Atomic Force Microscope cantilevers using the Sader Method. Provides a user interface for determining the spring constant of a cantilever from measurements of its resonant frequency and quality factor.

## Key features

- Atomic Force Microscope cantilever calibration
- Determine spring constant
- Resonant frequency measurement
- Quality factor measurement
- User interface for calibration

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/sader-method/id402544930/reviews.md

### 5/5 — Brilliant

*2011-02-02*

I love using this to celebrate my cantilever!

## Frequently asked questions about Sader Method

### What is the Sader Method app used for?

The Sader Method app is used to calibrate Atomic Force Microscope (AFM) cantilevers. It helps determine the spring constant of a cantilever by measuring its resonant frequency and quality factor.

### Is the Sader Method app free to use?

Yes, the Sader Method app is completely free to download and use. It does not have any associated costs or in-app purchases.

### What devices does the Sader Method app support?

The Sader Method app is available for iPhone and iPod devices. It is designed for iOS operating systems.

### How often is the Sader Method app updated?

The Sader Method app was last updated on May 17, 2022, with version 3.0. While updates may not be frequent, the app provides core functionality for AFM cantilever calibration.

### What is the age rating for the Sader Method app?

The Sader Method app has an age rating of 4+, making it suitable for a wide range of users, including younger individuals interested in scientific applications.

### What user feedback is available for the Sader Method app?

The Sader Method app has a perfect rating of 5.0 stars based on one review. This indicates a highly positive user experience from the available feedback.

### Does the Sader Method app contain advertisements?

No, the Sader Method app does not contain any advertisements. It is an ad-free utility designed for scientific calibration purposes.

### Who developed the Sader Method app?

The Sader Method app was developed by John Sader. He is the creator behind this specialized scientific utility.

## Version history (last 4 releases)

### 3.0 — 2022-05-17

This app has been updated and now includes Adama Innovations diamond probes (www.adama.tips).

### 2.1 — 2017-09-11

This app has been updated by Apple to display the Apple Watch app icon.

Updated to support 64-bit.

### 2.0 — 2012-10-25

(1) Includes commonly used non-rectangular AFM cantilevers, whose hydrodynamic functions are reported in:

 JE Sader et al., “Spring constant calibration of atomic force microscope cantilevers of arbitrary shape,” Review of Scientific Instruments, 83, 103705 (2012)

(2) New cantilever geometries are of arrow shape, small aspect ratio rectangular, quasi-rectangular, irregular rectangular, non-ideal trapezoidal cross sections, and V-shape.

(3) Instructions for implementing method are included.

### 1.0 — 2010-11-12

No release notes.

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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 2026-06-05.*