Ohmulator vs Barometer ∞ Pressure Altitude
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ohmulator
This electric circuit calculator simplifies Ohm's Law calculations. It allows users to input two known variables (current, resistance, voltage, or power) and automatically computes the unknown values. The app also supports on-the-fly unit adjustments, eliminating the need for manual conversions.
- Ohm's Law calculations
- Calculate unknown variables
- Adjustable unit types
- Total resistance calculator
- Supports Voltage, Current, Resistance, Power
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Makes Ohm's Law simple! Ohmulator is a simple, yet robust, electric circuit calculator that enables you to quickly find the unknown variables of a circuit. Ohmulator allows you to easily adjust unit types on the fly (eg. milli Amps, Amps, kilo Amps), which means no prior conversion! Enter two known variables (from: I = Current, R = Resistance, V = Voltage, P = Power), set preferred units, then Ohmulator will calculate and return the previously unknown values. Also an effective (total) resistance calculator. What two App Store reviewers had to say about Ohmulator: "Great. Does what it says. Very good app. Stylish design." 5 Stars - Jamie1990jamie "Awesome app. It simply works. A must have for the radioamateur or electronic nerd. Nice to have the watt law as well." 5 Stars - Per67 Also available for macOS on the Mac App Store.
Barometer ∞ Pressure Altitude
Access your device's built-in barometer for real-time atmospheric pressure and altitude readings. Offers multiple units and works offline without requiring signup or subscriptions.
- Live barometric pressure readings
- Current altitude display
- Multiple pressure units (atm, hPa, kPa, Bar)
- Offline functionality
- Native iOS design
- Minimalist interface
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Your iPhone already has a barometer. Use it. Barometer ∞ gives you instant, accurate atmospheric pressure readings and your current altitude — straight from the device's built-in sensor. No signup, no subscription, no fuss. • Live barometric pressure, updated in real time • Current altitude in meters, powered by the same sensor pilots trust • Four pressure units — pick Standard Atmosphere (atm), Hectopascals (hPa), Kilopascals (kPa), or Bar • Works offline — no internet or location required to read pressure • Native iOS design built for iOS 17 and later • Tiny download and zero clutter Great for: — Hikers and climbers curious about elevation — Weather watchers tracking pressure shifts — Students, teachers, and anyone learning about atmospheric science — Anyone who wants a clean, fast reading without wading through ads-riddled "pro" alternatives Barometer ∞ is intentionally simple. It does one thing — show you what your iPhone's pressure sensor sees — and it does it instantly. No cluttered dashboards, no weather forecasts you didn't ask for, no dark-pattern paywalls. Privacy Policy: https://triplegelato.notion.site/Privacy-Policy-182d18371d6181b588d4ed7dbd0ba832 Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Barometer ∞ Pressure Altitude at Free against Ohmulator's $0.99. Barometer ∞ Pressure Altitude also leads on rating (5.0 vs 4.7). Ohmulator's advantage is ads (none vs shown) and ratings volume (79 vs 1). On 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
Barometer ∞ Pressure Altitude is free to download; Ohmulator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Barometer ∞ Pressure Altitude holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Ohmulator has 79 ratings behind it against 1, so its average is the more settled of the two.
Ohmulator ships an update every 2 months, Barometer ∞ Pressure Altitude every 10 months. The most recent releases landed on October 9, 2026 and October 11, 2026 respectively.
| Parameter | Ohmulator | Barometer ∞ Pressure Altitude |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.7 (79 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 81.1% of reviews | — |
| Number of ratings | 79 — better | 1 |
| Update frequency | Every 2 months — better | Every 10 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 10.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Armchair Engineering | Chen-Yu Wei |
In-app purchases
Ohmulator
No in-app purchases
Barometer ∞ Pressure Altitude
No in-app purchases
Questions
Is Ohmulator free?
Is Barometer ∞ Pressure Altitude free?
Which has better reviews, Ohmulator or Barometer ∞ Pressure Altitude?
Do Ohmulator or Barometer ∞ Pressure Altitude have ads?
Which is updated more often, Ohmulator or Barometer ∞ Pressure Altitude?
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