OpAmplifiers vs Circuit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpAmplifiers
This app aids electronics students by providing information on operational amplifier applications, including schematics, formulas, and component calculations. It offers a simple interface to revise key concepts and check amplifier pinouts.
- Operational amplifier application revision
- Schematics and input value display
- Formula lookup
- Component value calculation
- Amplifier pinout checking
- Supports multiple op-amp circuit types
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The ideal app for electronics studies ! OpAmplifiers allows you to easily revise what you should know about the main applications of Operational Amplifiers, but that's not it ! You can also use OpAmplifiers to calculate the values of your components and quickly check out the pinning of your amplifier, all in a simple and smooth interface. For each application, OpAmplifiers allows you to : - See schematics, and input values. - See the formula of the application. - Check the pinning of your amplifier. The following Operational Amplifier applications are available : - Voltage Follower - Comparator - Inverting Amplifier - Non Inverting Amplifier - Summing Amplifier - Differential Amplifier - Inverting Integrator - Inverting Differentiator
Circuit
Design, analyze, and solve electrical circuits with this comprehensive tool. It supports various circuit types, simplifies complex networks step-by-step, and includes educational resources on electrical laws and formulas. Save and share your designs locally.
- Design and analyze electrical circuits
- Simplify complex resistor, capacitor, and inductor networks
- Convert delta to wye and vice versa
- Convert current to voltage sources and vice versa
- Design or find resistor values
- Step-by-step simplification visualization
- Educational study tab with electrical laws and formulas
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The CircuitDesign is a feature rich app designed by an engineer. This app allows the creative smart people like you to design, draw, analyse, simplify and solve electrical circuits. You can design, draw, solve and simplify resistor-network, solve capacitor-network, solve inductor-circuit. You can design, draw, solve and simplify parallell circuit diagrams, series circuit diagrams, delta/wye circuit diagrams and any combinations of these. You can convert delta to wye and wye - delta network You can convert current source to voltage source or voltage source to current source You can design your own resistor (3,4,5 or 6 band resistor) or find the value for existing resistor You can even share your creativity with other people. Save the diagram locally. Do you have a complex network involving any combinations of parallell network, series network, delta/wye network? Fantastic. You can simplify this network and see how its done step by step so you can learn how to simplify networks. You can go back all the way to original network to see how the simplification was done. Simply stated, view simplification steps graphically. Keeps the historical diagram so that you can go back and verify each step. You can also share the simplification steps or save it locally. It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort of drawing diagrams and simplifying/solving it will not be lost. Are you a high school student learning electricity? This is the app for you. Are you a university student learning electrical engineering? This is the app for you. There is also a page to help you study. This study tab teaches you some very important laws of electricity and important formula. Like Ohm, law, Kirchhoff's volgate law, Kirchhoff's current law, There is also a page to help you learn now to use this app. This is a perfect app for a creative smart individual like you. This is an app for all student groups. From high school to college to university students. Be creative. Enjoy the app!
Screenshots
Verdict
The clearest difference is rating: OpAmplifiers at 5.0 against Circuit's 1.0. OpAmplifiers also leads on ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, update cadence and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OpAmplifiers holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
OpAmplifiers ships an update every 6 weeks, Circuit every 5 weeks. The most recent releases landed on September 23, 2026 and September 24, 2026 respectively.
| Parameter | OpAmplifiers | Circuit |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 6 weeks | Every 5 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 6.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 3 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Kyrill Cousson | Om Prakash Chapagain |
Customer experience
OpAmplifiers
Circuit
In-app purchases
OpAmplifiers
No in-app purchases
Circuit
No in-app purchases
Questions
Is OpAmplifiers free?
Is Circuit free?
Which has better reviews, OpAmplifiers or Circuit?
Do OpAmplifiers or Circuit have ads?
Which is updated more often, OpAmplifiers or Circuit?
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