# DFT 101 vs ControlsLab

The clearest difference is in-app purchases: DFT 101 at none against ControlsLab's 1. On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. ControlsLab sells 1 one-off in-app purchase. DFT 101 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for DFT 101 against 5.0 for ControlsLab. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

## The numbers

| Metric | DFT 101 | ControlsLab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/dft-101/id6757940245/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/controlslab/id6763078520/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 1 MB |
| Requires iOS | **17.6** | 18.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kalyan Lakkavarapukota](https://appshunter.io/developer/1855873339) | [Pedro Resto](https://appshunter.io/developer/1895152088) |

## What reviewers say

### DFT 101

[App page](https://appshunter.io/ios/app/dft-101/id6757940245)

This app simplifies Design for Testability (DFT) concepts for students and professionals. It focuses on practical, real-world applications, covering fundamentals to interview-level knowledge through clear explanations, examples, and quizzes.

**Highlights:** Practical DFT explanations, Real-world examples, Topic-wise quizzes, Progress tracking, Interview preparation mode, Covers fundamentals to advanced concepts

**Features:** macOS Compatibility

**In-app purchases:** none


### ControlsLab

[App page](https://appshunter.io/ios/app/controlslab/id6763078520)

This app offers a professional-grade simulator for system dynamics and control systems. It allows users to visualize and interact with mass-spring-damper systems and control loops without coding. Explore parameters, inputs, and analysis modes with real-time visual feedback.

**Highlights:** Real-time system simulation, Parameter adjustment with sliders, Live time-domain response plot, S-plane pole visualization, Open-loop and closed-loop modes, PID controller tuning, Bode plot analysis

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ControlsLab Pro | $4.99 | one-time |


## Frequently asked questions

### Is DFT 101 free?

DFT 101 is free to download, with no in-app purchases.

### Is ControlsLab free?

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

### Which has better reviews, DFT 101 or ControlsLab?

DFT 101 and ControlsLab are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do DFT 101 or ControlsLab have ads?

Neither DFT 101 nor ControlsLab shows ads.

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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.*