# Circuit Simulator vs AVR Projects

The clearest difference is update cadence: AVR Projects at daily against Circuit Simulator's every 6 weeks. Circuit Simulator's advantage is iOS requirement (15.3 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Circuit Simulator sells 8 in-app purchases, starting at $0.99 per month and AVR Projects sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Circuit Simulator ships an update every 6 weeks, AVR Projects daily. The most recent releases landed on October 25, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Circuit Simulator | AVR Projects |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (92 ratings)](https://appshunter.io/ios/app/circuit-simulator-voltsim/id6736870364/reviews)** | — |
| Number of ratings | **92** | — |
| Positive reviews | 76.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 103 MB | 20 MB |
| Requires iOS | **15.3** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sindhu Gopi](https://appshunter.io/developer/1773585161) | [Zaw Win Myat](https://appshunter.io/developer/1800881321) |

## What reviewers say

### Circuit Simulator

[App page](https://appshunter.io/ios/app/circuit-simulator-voltsim/id6736870364)

Design and simulate electronic and digital circuits in real-time. Visualize voltage and current flow, and analyze circuit behavior with tools like oscilloscopes and multimeters. Offers a user-friendly experience for circuit design and digital electronic analysis.

**Highlights:** Real-time electronic circuit simulation, Digital circuit simulation, Voltage and current analysis, Multichannel oscilloscope, Multimeter tools, Circuit design and tuning

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extensions Subscription | $0.99 | per month |
| Sensors Extension | $0.99 | one-time |
| Custom Chips Extension | $1.99 | one-time |
| Instruments extension | $2.99 | one-time |
| Analog Extension | $3.99 | one-time |
| Misc Extension | $3.99 | one-time |
| Digital Extension | $3.99 | one-time |
| Extension Pack | $12.99 | one-time |


### AVR Projects

[App page](https://appshunter.io/ios/app/avr-projects/id6745124011)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| R2R Ladder DAC | $0.99 | one-time |
| Sawtooth Waveform | $0.99 | one-time |
| Triangular Waveform | $0.99 | one-time |
| Sine Waveform | $0.99 | one-time |
| Ammeter AVR | $0.99 | one-time |
| 4x3 Matrix Keypad | $0.99 | one-time |
| Ohm Meter AVR | $0.99 | one-time |
| Voltmeter AVR | $0.99 | one-time |
| TM1637 Interfacing with AVR | $0.99 | one-time |
| Graphic LCD Interfacing | $0.99 | one-time |


## Frequently asked questions

### Is Circuit Simulator free?

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

### Is AVR Projects free?

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

### Do Circuit Simulator or AVR Projects have ads?

Neither Circuit Simulator nor AVR Projects shows ads.

### Which is updated more often, Circuit Simulator or AVR Projects?

Circuit Simulator ships an update every 6 weeks, and AVR Projects daily. Most recently, Circuit Simulator was updated on October 25, 2026 and AVR Projects on October 12, 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.*