CALC 1 Programmable Calculator vs Operational Amplifiers Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CALC 1 Programmable Calculator
Create custom calculators with AI-generated JavaScript functions for precise calculations and data visualization. Assign programs to keys and manage data efficiently. Offers multiple calculation modes and extensive documentation.
- AI-assisted JavaScript function creation
- Customizable function calculators
- Data visualization and plotting
- Programmable calculator keys
- List and data management
- Multiple calculation modes (algebraic, RPN)
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Customize your calculators for quick and accurate calculations with CALC 1 - the ultimate programmable calculator for your iPhone or iPad. * Harness the power of AI: Ask your favorite AI tool to create JavaScript functions for you * Effortlessly create Function Calculators: Simply copy the AI-generated function code to your clipboard and tap the add button in the "Function Calculators" list - CALC 1 will automatically create a new Function Calculator (Always test the Function Calculator to verify the function is as you intended) * Execute functions with ease: Key in the parameter values to run the function and get instant results * Perform breakeven analysis: Function Calculators can solve for any non-integer parameter * Visualize data effortlessly: Create plots as a function of any parameter by entering the min and max values * Assign programs to individual calculator keys for personalized functionality * Create custom calculators by copying and pasting keys from pre-built calculators * Automatically generate keys from entered expressions for effortless reuse * CALC 1 has over 100 built-in functions that you can use from your JavaScript code * Manage lists and data with the List Manager and Data Manager for quick and accurate importing * Choose between algebraic, chain, or RPN calculation modes with an automatic stack * Access the CALC 1 documentation site with over 100 pages of searchable content and video tutorials, easily accessible through help links (?) within the app Whether you're a student, professional, or simply someone who appreciates the power of customization and AI-assisted productivity, CALC 1 offers a consistent and efficient solution to a wide range of problems. Upgrade your calculation experience with CALC 1 today!
Operational Amplifiers Pro
This app provides interactive calculators and reference information for designing and analyzing op-amp circuits. It offers step-by-step explanations and technical data on popular op-amp series, aiding students and engineers in circuit development and prototyping.
- Interactive op-amp circuit calculators
- Step-by-step explanations and formulas
- Reference data on op-amps and comparators
- Support for 14 languages
- Light and dark mode
- Advanced calculators and circuit guides (Pro)
- Full-text search (Pro)
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Operational Amplifiers Pro is your essential tool for designing and analyzing circuits using op-amps. Whether you're a student, electronics enthusiast, or experienced engineer, this app helps you create, calculate, and understand a wide variety of op-amp–based circuits with ease. Use it as a practical reference when developing projects, building prototypes, or studying amplifier configurations. The app also includes technical data on popular operational amplifier and comparator series — making it a handy guide for both design and selection. Available in 14 Languages: • English, French, German, Indonesian, Italian, Japanese, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Turkish, Ukrainian, and Vietnamese — study in your native language! Key Features: • Interactive calculators for common op-amp circuits • Step-by-step explanations and formulas • Reference info on op-amps and comparators • Ideal for learning, prototyping, or quick checks • Light and dark mode support Pro Version Includes: • Advanced calculators and circuit guides • Full-text topic search • Save favorite circuits for quick access The application contains the following guides and calculators: Amplifiers • Non-inverting operational amplifier • Inverting operational amplifier • Inverting amplifier with T-bridge in OS • Differential amplifier • Differential amplifier with T-bridge in OS • Voltage repeater • Inverting voltage repeater • AC voltage amplifier • High Input Impedance AC Voltage Amplifier • AC voltage repeater ActiveFilters • Non-inverting low-pass filter • Inverting low-pass filter • Non-inverting high-pass filter • Inverting high pass filter • Bandpass filter • Gyrator Integrators and differentiators • Voltage integrator • Sum integrator • Integrator with signal amplification • Difference integrator • Double integrator • Voltage differentiator • Sum Differentiator • Differentiator with T-bridge • Differentiator with T-bridge made of capacitors • Difference differentiator Comparators • Comparator • Limiter • Limiter with zener diode at the input • RS trigger Attenuators • Non-inverting attenuator • Inverting attenuator Converters • Voltage-to-current converter with non-inverting input • Voltage to current converter with inverting input • Voltage to current converter with differential input Adders and substactors • Inverting adder • Addition-subtraction circuit • Non-inverting adder Logarithmic and exponential amplifiers • Diode-based logarithmic amplifier • Transistor-based logarithmic amplifier • Diode exponential amplifier • Exponential transistor amplifier • Popular operational amplifiers description and pinout Sine Wave generators • Op-Amp Oscillators • Oscillator with Diode in the Feedback Path • Twin-T Network Signal Generator Square-wave pulse generators • Op-Amp Square-Wave Generator • Adjustable Square-Wave Generator • Enhanced Square-Wave Generator • Duty-Cycle Adjustment • Triangle and Square-Wave Generator • Generator with Adjustable Slope and Duty Cycle Triangle-wave signal generators • Nonlinear Triangle-Wave Generator • Variable-Symmetry Sawtooth Generator • Linear Triangle-Wave Generator • Adjustable Linear Triangle-Wave Generator • Variable-Symmetry Ramp Generator Download now and power up your electronics work!
Screenshots
Verdict
The clearest difference is rating: Operational Amplifiers Pro at 5.0 against CALC 1 Programmable Calculator's 4.6. Operational Amplifiers Pro also leads on price ($4.99 vs $9.99) and chart position (#198 vs unranked). CALC 1 Programmable Calculator's advantage is ratings volume (9 vs 1). On update cadence, ads, in-app purchases and monetization model 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
CALC 1 Programmable Calculator costs $9.99 and Operational Amplifiers Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Operational Amplifiers Pro holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: CALC 1 Programmable Calculator has 9 ratings behind it against 1, so its average is the more settled of the two.
CALC 1 Programmable Calculator ships an update every 5 weeks, Operational Amplifiers Pro every 2 months. The most recent releases landed on September 27, 2026 and October 12, 2026 respectively.
| Parameter | CALC 1 Programmable Calculator | Operational Amplifiers Pro |
|---|---|---|
| Price | $9.99 | $4.99 — better |
| Rating | 4.6 (9 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 9 — better | 1 |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #198 — better |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | CalcFxC, LLC | ALG Software Lab |
Customer experience
CALC 1 Programmable Calculator
Operational Amplifiers Pro
In-app purchases
CALC 1 Programmable Calculator
No in-app purchases
Operational Amplifiers Pro
No in-app purchases
Questions
Is CALC 1 Programmable Calculator free?
Is Operational Amplifiers Pro free?
Which has better reviews, CALC 1 Programmable Calculator or Operational Amplifiers Pro?
Do CALC 1 Programmable Calculator or Operational Amplifiers Pro have ads?
Which is updated more often, CALC 1 Programmable Calculator or Operational Amplifiers Pro?
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