Operational Amplifiers Pro vs Navoa
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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)
Read full descriptionHide full description
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!
Navoa
Read full descriptionHide full description
Navoa is the boat tracker built for Icelandic waters. Navoa combines live tracking, real AIS-data, an automatic logbook, and a multi-channel SOS system integrated directly with search-and-rescue in Iceland. No third-party dispatcher. No detours. Just you, your boat, and a safety net that's always on. Whether you're cruising on a calm summer evening or fishing near the coast, Navoa keeps you connected, visible, and logged. YOUR SAFETY NET AT SEA: Navoa's multi-channel SOS is designed for the moments you hope never come. One tap sends your alert to three channels at once: • The Icelandic Coast Guard - direct SAR integration, no third-party dispatcher in between • Your emergency contact - notified instantly by SMS • Nearby Navoa users - vessels actively tracking within 30 nautical miles receive a push notification You'll see the status of every alert in real time: server received, coast guard contacted, emergency contact notified, nearby vessels alerted. Because in an emergency, knowing your call was heard matters. LIVE AIS IN ICELANDIC WATERS: See what's around you right inside Navoa. • Detailed AIS coverage of Icelandic waters • Data from both satellite and terrestrial stations • Tap any vessel for name, MMSI, type, dimensions, speed, and last seen • Know who's near you before you can see them on the horizon BE SEEN BY THE PEOPLE WHO CARE: • Share your live position publicly on navoa.is • Family and friends can follow your trip from shore with no app required, all shown on navoa.is • Start tracking with a single tap AN AUTOMATIC LOGBOOK FOR EVERY TRIP: Every trip is logged for you. No notebooks needed and no manual entries. • Full route on a map for every voyage • Distance, duration, and average speed recorded automatically • Browse your trip history any time • Share any trip with a tap BUILT FOR ICELAND: Navoa isn't a global app adapted for Iceland - it's built here, for these waters, these conditions, and this coastline. From integration with Icelandic search-and-rescue to AIS coverage tuned for Icelandic waters, everything in Navoa exists to make sailing here safer and simpler. Cast off. We'll keep the log. Download Navoa and make every trip on the water safer, smarter, and remembered. Note: SOS and tracking features require an active internet or data connection. Navoa is a supplementary safety tool and does not replace required marine safety equipment or official emergency procedures.
Screenshots
Verdict
The clearest difference is price: Navoa at Free against Operational Amplifiers Pro's $4.99. Navoa also leads on update cadence (every 2 weeks vs every 2 months). On ads, in-app purchases, device support and iOS requirement 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
Navoa is free to download; Operational Amplifiers Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Operational Amplifiers Pro ships an update every 2 months, Navoa every 2 weeks. The most recent releases landed on October 19, 2026 and October 18, 2026 respectively.
| Parameter | Operational Amplifiers Pro | Navoa |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 14 MB | 31 MB |
| Age rating | 4+ | 17+ |
| Developer | ALG Software Lab | Arctic Applications |
In-app purchases
Operational Amplifiers Pro
No in-app purchases
Navoa
No in-app purchases
Questions
Is Operational Amplifiers Pro free?
Is Navoa free?
Do Operational Amplifiers Pro or Navoa have ads?
Which is updated more often, Operational Amplifiers Pro or Navoa?
Other comparisons















