Comparison

Ohmulator vs Bolt Calculation & Analysis

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

Head to head
About

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.

Highlights
  • Ohm's Law calculations
  • Calculate unknown variables
  • Adjustable unit types
  • Total resistance calculator
  • Supports Voltage, Current, Resistance, Power
Features
Read full description

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.

About

Bolt Calculation & Analysis

Features
Read full description

Analyze the strength of fasteners in seconds with the Bolt Analysis App, developed specifically for engineers and technical teams. Easily perform calculations for stress, shear force, torque, tightening force, and safety factors. Key Features: - Fast Bolt Strength Calculations: Instant and accurate results. - Metric & Imperial Support: Complete flexibility for global standards. - Material & Grade Selection: Wide range of material and quality class options. - Torque & Preload Analysis: Advanced calculation tools for secure joints. - User-Friendly Engineering Interface: Clean, intuitive, and practical design. - On-Site & Production Ready: Instant use directly on the field or manufacturing floor. A professional analysis tool tailored for the machinery, automotive, defense, aerospace, and manufacturing industries.

Screenshots

Ohmulator4 screens
Bolt Calculation & Analysis4 screens

Verdict

The call

The clearest difference is price: Bolt Calculation & Analysis at Free against Ohmulator's $0.99. Bolt Calculation & Analysis also leads on update cadence (every 3 weeks vs every 2 months). Ohmulator's advantage is iOS requirement (10.0 vs 17.0). On ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Bolt Calculation & Analysis is free to download; Ohmulator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Ohmulator ships an update every 2 months, Bolt Calculation & Analysis every 3 weeks. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Ohmulator versus Bolt Calculation & Analysis: the parameters behind the verdict, then further details
ParameterOhmulatorBolt Calculation & Analysis
Price$0.99Free — better
Rating4.7 (79 ratings) — better—
Positive reviews81.1% of reviews—
Number of ratings79 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS10.0 — better17.0
Further details — not scored
Size5 MB4 MB
Age rating4+4+
DeveloperArmchair EngineeringKORAY GULPINAR

In-app purchases

None

Ohmulator

No in-app purchases

None

Bolt Calculation & Analysis

No in-app purchases

Questions

Is Ohmulator free?
Ohmulator costs $0.99, with no in-app purchases.
Is Bolt Calculation & Analysis free?
Bolt Calculation & Analysis is free to download, with no in-app purchases.
Do Ohmulator or Bolt Calculation & Analysis have ads?
Neither Ohmulator nor Bolt Calculation & Analysis shows ads.
Which is updated more often, Ohmulator or Bolt Calculation & Analysis?
Ohmulator ships an update every 2 months, and Bolt Calculation & Analysis every 3 weeks. Most recently, Ohmulator was updated on October 29, 2026 and Bolt Calculation & Analysis on October 25, 2026.

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