Comparison

Ampere vs Electric Field Explorer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Ampere

Features
Read full description

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.

About

Electric Field Explorer

Features
Read full description

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

Ampere2 screens
Electric Field Explorer4 screens

Verdict

The call

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences Ā· 3 level
Ampere versus Electric Field Explorer: the parameters behind the verdict, then further details
ParameterAmpereElectric Field Explorer
PriceFree — better$1.99
Update frequencyEvery 145 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better26.0
Further details — not scored
Size51 MB4 MB
Age rating4+4+
DeveloperScott BeilfussHolger Wiesing

In-app purchases

None

Ampere

No in-app purchases

None

Electric Field Explorer

No in-app purchases

Questions

Is Ampere free?
Ampere is free to download, with no in-app purchases.
Is Electric Field Explorer free?
Electric Field Explorer costs $1.99, with no in-app purchases.
Do Ampere or Electric Field Explorer have ads?
Neither Ampere nor Electric Field Explorer shows ads.
Which is updated more often, Ampere or Electric Field Explorer?
Ampere ships an update every 145 months, and Electric Field Explorer every 2 months. Most recently, Ampere was updated on October 24, 2026 and Electric Field Explorer on October 6, 2026.

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