Multisim Circuit Explorer vs CO2 Modeller
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Multisim Circuit Explorer
Explore and understand 18 common electronic circuits, including Ohm's law and operational amplifiers. This companion app allows immediate observation of parameter changes on circuit behavior. It's designed for students learning fundamental circuit theory.
- Explore 18 common electronic circuits
- Observe immediate parameter effect
- Learn Ohm's law
- Understand voltage and current dividers
- Study RC/RL filters and step response
- Explore operational amplifiers
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Explore and understand common electronic circuits with Multisim Circuit Explorer. This textbook curriculum companion allows you to immediately see the effect of electronic parameters when modified for 18 circuits. Concepts explored include Ohm's law, voltage and current dividers, RC/RL step response, RC/RL filters, and operational amplifiers. Multisim Circuit Explorer has been developed for students being introduced to fundamental topics in circuit theory.
CO2 Modeller
Simulate the impact of reducing carbon emissions on climate change. This app generates projections for atmospheric CO2 concentration, global warming, sea level rise, and ocean acidification.
- Model carbon emission reductions
- Simulate climate change effects
- Project CO2 concentration
- Estimate global warming
- Predict sea level rise
- Analyze ocean acidification
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Model the effect of carbon emissions reductions on climate change using your smartphone or tablet. CO2 Modeller uses a streamlined computationally efficient Earth system model to simulate the effect of carbon emissions reductions on climate change. It generates twenty-first century projections of atmospheric carbon dioxide concentration and global averages of surface warming, sea level rise and ocean acidification.
Screenshots
Verdict
The clearest difference is review sentiment: CO2 Modeller at 75% against Multisim Circuit Explorer's 25%. CO2 Modeller also leads on rating (2.5 vs 2.3) and device support (3 vs 1). Multisim Circuit Explorer's advantage is update cadence (every 10 months vs every 36 months) and ratings volume (8 vs 2). On price, ads, in-app purchases and monetization model 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.
CO2 Modeller holds the better App Store score, 2.5 against 2.3. Both are backed by a comparable volume of ratings — 8 and 2 respectively. Written reviews point the same way: 25% of Multisim Circuit Explorer's written reviews are positive against 75% of CO2 Modeller's.
Multisim Circuit Explorer ships an update every 10 months, CO2 Modeller every 36 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.
| Parameter | Multisim Circuit Explorer | CO2 Modeller |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (8 ratings) | 2.5 (2 ratings) — better |
| Positive reviews | 25.0% of reviews | 75.0% of reviews — better |
| Number of ratings | 8 — better | 2 |
| Update frequency | Every 10 months — better | Every 36 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 4.2 — better | 12.1 |
| Further details — not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | National Instruments | Alex Rogers |
Customer experience
Multisim Circuit Explorer
CO2 Modeller
In-app purchases
Multisim Circuit Explorer
No in-app purchases
CO2 Modeller
No in-app purchases
Questions
Is Multisim Circuit Explorer free?
Is CO2 Modeller free?
Which has better reviews, Multisim Circuit Explorer or CO2 Modeller?
Do Multisim Circuit Explorer or CO2 Modeller have ads?
Which is updated more often, Multisim Circuit Explorer or CO2 Modeller?
Other comparisons
