# iCircuit — user reviews

> 682 indexed App Store user reviews of iCircuit by Krueger Systems, Inc., rated 3.80/5 from 134 ratings.

- Source: https://appshunter.io/ios/app/icircuit/id383359044/reviews
- App overview in markdown: https://appshunter.io/ios/app/icircuit/id383359044.md
- Rating breakdown: 5★ 82 · 4★ 9 · 3★ 6 · 2★ 10 · 1★ 27

## What do users think of iCircuit?

Overall sentiment: neutral

**Pros**

- 🚀 Great for learning and testing
- 👍 Intuitive and easy to use
- 💡 Programmable Arduino integration
- 👍 Useful for hobbyists and students

**Cons**

- 🐛 Buggy and crashes frequently
- 🔧 Difficult to edit and delete components
- 🔧 Limited component library
- 🔧 Inaccurate simulation results in some cases

**Commonly reported bugs**

- Oscilloscope and meter functions not working properly
- Saving and loading circuits can be unreliable
- Inconsistent behavior when rotating/flipping components
- Crashes when working with larger or more complex circuits

**Most requested features**

- More components (e.g. transformers, triodes, MOSFETs)
- Ability to create custom components
- Frequency domain analysis (Bode plots, FFT)
- Improved wiring and component placement controls
- Better support for AC circuits and motors

## Newest reviews (10 of 682)

### 2/5 — Almost great

*2026-05-10, version 1.15.2*

I would pay for the pro. But honestly, even the small list of components isn’t worth it. It’s missing so much. 

Paying monthly/annually isn’t worth the money. I want to see prolong degradation of circuits and overheating. I want to know if my design will fail. 

So much potential but not worth paying for.

### 2/5 — Constantly freezing

*2025-08-06, version 1.14.2*

Running on M1 ipad pro and it is constantly freezing

### 2/5 — Not a lot of option

*2025-06-08, version 1.14.2*

Just the basic switches and relays available are lacking. Makes designing even simple stuff impossible.

### 2/5 — Bof

*2025-05-01, version 1.14.2*

Ça bug avec la touche annuler où vous ne faite perdre 20 ou plus étape au lieu d’annuler la dernière étape !!! C’est chiant 
Gabriel 
Testé sur iPad

### 2/5 — Heats Up Phone and Drain Battery Fast!

*2025-04-11, version 1.14*

It heats up my phone and it drains my battery so fast. Please fix this bug and make it more efficient.

Also please add a current signal for AC, there’s only AC voltage but no AC current.

### 2/5 — Don’t upgrade

*2025-01-19, version 1.13*

Worked until I upgraded to paid. Now it’s junk

### 3/5 — Almost great

*2025-01-05, version 1.13*

No AC motor, no way to search components

### 5/5 — Diyer

*2024-10-23, version 1.13*

Good software! Can you add LM337 ?

### 2/5 — Unstable

*2024-08-04, version 1.13*

Was enjoying it until today when opening work file and it was corrupted and no possible recovery.  Hours of work and Arduino debugging lost! This does not seem to be for real work. Just an expensive distraction. Find another alternative.

### 5/5 — Love It!

*2024-07-12, version 1.13*

Absolutely love this

## Most critical reviews (10 lowest-rated)

### 1/5 — Select by lasso bug

*2026-03-12, version 1.15*

I am leaving this 1 until you fix your lasso selection bug. It’s impossible to highlight certain components

### 1/5 — Pagar de nuevo?

*2026-02-28, version 1.15*

Borrando y usando chat gpt!

### 1/5 — sad

*2025-12-30, version 1.14.2*

This app deserves more negative reviews. It's super-amateur and riddled with bugs/annoyances.

I wanted to use this to sketch circuits on an iPad. It's not good for that because the components are so buggy and limited.

The UI doesn't work the way you would expect. You can't place things like you would expect. Basic functions like zooming and moving the canvas just don't work right. Snapping is frustrating and inconsistent. Sometimes when you tap an item it brings up one menu, sometimes it brings up a different menu. When using the app the canvas often gets stuck where you can't scroll down to see the bottom half of what you're working on, and the only way to fix it is to close the project and open it again.

The pencil doesn't work right. It gets stuck doing nothing on a lot of taps. It kinda works sometimes, but the app was definitely not tested with the pencil. It's made to work with your finger.

Scrolling lists of components is frustrating because there's no scrollbar and no room between components to 'grab' the list and scroll it. Most of the time you try to scroll a list it will think you're trying to drag the component out of the list and place it.

Labelling things is not something the developer wants you to do. Components have a name you can edit, but many don't actually display the name. Traces/nets can't have names. There is a 'text label' component, but if you try to use it you'll realize there is an invisible barrier preventing you from actually placing it near other things. So you can't make an adjacent label, and you certainly can't place a label on top of something.

Take a basic component — the TRS jack. It doesn't show the name you give it, and it doesn't have labels for tip/ring/GND. By default it's facing right. If you want to make it face left, you can only rotate it 180º so now it's upside down with GND on top and tip on the bottom which is confusing because you can't label things. There's a 'flip' option but it doesn't actually flip the component. It just roates it 180º. So it just does the exact same thing as rotating it twice. That's not very useful unless you like upside-down jacks with unnamed leads coming out of them. You're better off using 'internal port' for anything you want a name on.

There's no consistancy. The TRS jack rotates and flips, but 'flip' actually rotates instead of flipping. But if you want to rotate an IC there is no 'rotate' option, there's just 'flip', and in this case it actually DOES flip the IC to a mirror image. That's not something you'd EVER want (unless you're drawing a circuit where the IC is on the bottom side of the PCB and you're looking through it from the top).

Point being nothing works the way you want it to. If you want to sketch a circuit you're better off sketching it in a basic drawing app or sketching it on a piece of paper and taking a picture. This app won't improve your workflow.

Most of the problems are things a developer with mobile experience could fix in an afternoon, but this developer is still charging $12.99 yet is unwilling/unable to fix any of the UI for 10+ years.

### 1/5 — Don’t buy, bought full app, year later they remove features for subscription

*2025-12-29, version 1.14.2*

Bought this app full price a year or two ago for full price. Get on today to find out a lot of my components are unable to use unless I sign up for the subscription.. like everything else in this world. Scam don’t download or use

### 1/5 — 日本語対応していない

*2025-12-22, version 1.14.2*

textlabelに日本語を入力すると文字化けしてしまい非常に使いにくい

### 1/5 — Fehlerhaft

*2025-12-08, version 1.14.2*

Ich habe in einem ganz simplen Schaltkreis eine ganz simple LED mit einem Transistor betreiben wollen. 2 Stunden lang quälte ich mich mit den Anzeigen, die nicht mit dem gezeigten übereinstimmten. Auch wenn die Basisstrecke keinerlei Strom führt, fließt fleißig und viel Strom über die LED. Das kann physikalisch nicht sein. Da ist ein Hoax drin. So ist das Programm für mich unbrauchbar.

Ich bitte um Rückerstattung der Kaufsumme ..

### 1/5 — Garbage Programming

*2025-11-21, version 1.14.2*

This app has issues with the smallest and simplest things like laying wires and connections. Super buggy. Want to edit an unused connection by adding a wire? Simple right? Nope. Click the connection point and drag like it asks? Not a chance. “Don’t worry though”, you can add a random line in the middle of nowhere and build off that instead. It’s honestly laughable. Want to Rotate? We’ll make it extremely hard for you so you have to tap, wait, tap again for the menu, then scroll through the 10 options until you get to the end where the most useful feature is. Make a button!!!!! Honestly it’s crazy how badly this app is managed from a mobile stance. Don’t even get me started on the “Undo” feature. Did you spend a few minutes making a solid effort to complete your design and make a small mistake? No problem, the Undo feature will erase all of that in one button press. :) didn’t want to do all that? Dang that’s crazy, we didn’t make an option for you to Redo to get your work back. At this point I uninstalled and won’t be back again. Having a Pro option is wild before finalizing the Standard version. Good luck :)

### 1/5 — Greedy developers

*2025-10-06, version 1.14.2*

You pay for app, and then pay for subscription if you want full functionality

### 1/5 — What happened?

*2024-12-26, version 1.13*

This app used to be awesome, I haven’t used it for a while and I just downloaded it again and it’s super buggy. It doesn’t matter how much you zoom in before you touch something or select something. It always thinks you’re trying to select or touch something else and then it messes the whole circuit up. Undo is unreliable. It just feels weird now it used to work really well.

### 1/5 — Probleme mit Bauteilen

*2024-10-17, version 1.13*

Ich wollte einen Schwingkreis bauen und der Transistor funktioniert nicht wie das Bauteil funktionieren soll. Ich habe es auch mit einer anderen Simulationsprogramm verglichen und da hat es funktioniert. Die 15€ für die App sind wie aus dem Fenster geschmissen.

## Most praised reviews (10 highest-rated)

### 5/5 — Great App for electrical and electronic circuit simulation

*2026-05-05, version 1.15.2*

I have tried several apps for circuit simulation, but iCircuit is the best among them. Thank you to the developer for providing such a fantastic app.

### 5/5 — Amazing application

*2026-03-04, version 1.15*

Best app in App Store for an EE. From a licensed engineer with a masters in electrical engineering. Super well built, easy to prototype on the go.

Developer has my Respect.

### 5/5 — Excellent

*2026-02-15, version 1.14.2*

I wait n wait for that other company very big ? Never have they seen a mac NOR an iPhone … but hey iCircuit has been on my list , i will never ever be able to thank you enough,

### 5/5 — サクッと回路検証

*2025-09-18, version 1.14.2*

紙と鉛筆と電卓を使って回路検証する感覚で手のひらの上で完結するのでPCを立ち上げずに回路の検証が可能になりました。

### 5/5 — Genial!

*2025-09-18, version 1.14.2*

Das ist das beste, was ich nach ausführlichen Testen an dieser Art von Apps gefunden habe. Wirklich super gemacht. Ich hoffe es wird auch in Zukunft noch ganz viel in dieses Projekt reingesteckt.

Daumen hoch, Leute 👍

### 5/5 — I have tried multiple simulator apps

*2025-08-18, version 1.14.2*

And this app is one that seems handy easy operating. User friendly

### 5/5 — Improvements

*2025-06-30, version 1.14.2*

App is awesome for school but still missing the basic circuits, for motor starter circuit are : forward and reverse starter motor, momentary close push button, open/close contacts motor contacts, Control Relay itself and contacts, Time relay contacts, High/low pressure switch, Jog switch, pilot lights I could just label the lamp. Please put more I would appreciate it!

### 5/5 — Raymond

*2025-04-25, version 1.14.2*

Richardson

### 5/5 — Really good

*2024-12-03, version 1.13*

It exceeded my expectations, really good app and most definitely worth it!

### 5/5 — Do the job

*2024-10-29, version 1.13*

Used this app through my studies. Great app for learning. Work on M1 iPad Pro on ipadOS 18.1

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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 2026-09-07.*