Ampere vs VisionStation
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 ā¢ Guide animated plasma-globe filaments ā¢ Explore a Paschen-law glow-discharge model ā¢ Drive a 13.56 MHz RF reactor solved by a global discharge model ā¢ Adjust an illustrative tokamak control visualization CALCULATE CORE PARAMETERS ā¢ Debye shielding length ā¢ Electron plasma frequency ā¢ Paschen breakdown voltage ā¢ Synthetic planar Langmuir-probe response ā¢ Lossless 13.56 MHz RF L-network matching ā¢ 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.
VisionStation
This app offers a suite of pocket tools for quick vision assessments. It includes a VA chart with customizable viewing distances and optotypes, a pupil and general ruler, and a theoretical color vision test. Designed for general use, it is not intended for diagnostic purposes.
- VA chart with varied viewing distances
- Customizable optotypes
- Crowding bars
- Duochrome test
- Pupil and general ruler
- Theoretical color vision test
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General pocket tools for quick vision assessment. VA chart - varied viewing distances - varied optotypes - crowding bars - duochrome Pupil ruler/general ruler D-CViTT Theoretical color vision test * not for diagnostic purposes Copyright, 2024, Switt Kongdachalert, M.D.
Screenshots
Verdict
The clearest difference is iOS requirement: VisionStation at 13.4 against Ampere's 16.4. On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Ampere | VisionStation |
|---|---|---|
| Price | Free | Free |
| Positive reviews | ā | 100.0% of reviews |
| Update frequency | Every 145 months | ā |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | ā | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod ā better |
| Requires iOS | 16.4 | 13.4 ā better |
| Further details ā not scored | ||
| Size | 51 MB | 36 MB |
| Age rating | 4+ | 12+ |
| Developer | Scott Beilfuss | Switt Kongdachalert |
In-app purchases
Ampere
No in-app purchases
VisionStation
No in-app purchases
Questions
Is Ampere free?
Is VisionStation free?
Do Ampere or VisionStation have ads?
Other comparisons
