Ampere vs Electric Field Explorer
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Ampere
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Explore plasma physics through interactive simulations and transparent educational calculators. SIMULATE PLASMA PHENOMENA ⢠Guide animated plasma-globe filaments ⢠Explore a Paschen-law glow-discharge model ⢠Drive a 13.56 MHz RF reactor solved by a global discharge model ⢠Adjust an illustrative tokamak control visualization CALCULATE CORE PARAMETERS ⢠Debye shielding length ⢠Electron plasma frequency ⢠Paschen breakdown voltage ⢠Synthetic planar Langmuir-probe response ⢠Lossless 13.56 MHz RF L-network matching ⢠Bohdansky physical sputter-yield estimates Ampere works offline and requires no account or purchase. Every advanced model states its assumptions and limitations. Results are intended for education and first-pass exploration, not professional engineering or safety decisions.
Electric Field Explorer
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E-Field Explorer makes electric fields visible and intuitive. Place positive and negative charges directly on the field, move them freely, and watch field lines, equipotential lines, and field strength update in real time. Use preset scenes such as a single charge, dipole, quadrupole, capacitor, or hollow sphere for a quick start, then adapt each setup to your own experiment. You can adjust charge strength for selected charges and optionally show labels for clearer orientation. The integrated particle emitter makes field behavior especially easy to grasp. Choose positive or negative test charges, automatic emission or single pulses, and damped or undamped motion. That makes the app ideal for teaching, self-study, and visual demonstrations on iPhone and iPad. Features: - Place positive and negative charges with drag and drop - Toggle field lines, equipotential lines, and heatmap - Adjust the strength of individual charges - Start from preset scenes for common electrostatic setups - Share screenshots directly from the app
Screenshots
Verdict
The clearest difference is price: Ampere at Free against Electric Field Explorer's $1.99. Ampere also leads on iOS requirement (16.4 vs 26.0). Electric Field Explorer's advantage is update cadence (every 2 months vs every 145 months). On ads, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Ampere is free to download; Electric Field Explorer costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Ampere ships an update every 145 months, Electric Field Explorer every 2 months. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.
| Parameter | Ampere | Electric Field Explorer |
|---|---|---|
| Price | Free ā better | $1.99 |
| Update frequency | Every 145 months | Every 2 months ā better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 ā better | 26.0 |
| Further details ā not scored | ||
| Size | 51 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Scott Beilfuss | Holger Wiesing |
In-app purchases
Ampere
No in-app purchases
Electric Field Explorer
No in-app purchases
Questions
Is Ampere free?
Is Electric Field Explorer free?
Do Ampere or Electric Field Explorer have ads?
Which is updated more often, Ampere or Electric Field Explorer?
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