Operational Amplifiers Guide vs Tuner & Metronome
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Operational Amplifiers Guide
Read full descriptionHide full description
Operational Amplifiers Guide is your essential tool for designing and analyzing circuits using op-amps and comparators. 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 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 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-wave signal generators • Nonlinear Triangle-Wave Generator • Variable-Symmetry Sawtooth Generator • Linear Triangle-Wave Generator • Adjustable Linear Triangle-Wave Generator • Variable-Symmetry Ramp Generator Popular operational amplifiers: description and pinout Popular comparators: description and pinout Download now and power up your electronics work!
Tuner & Metronome
Read full descriptionHide full description
TunerPro: The Ultimate Musician's Companion TunerPro brings professional-grade music tools to your fingertips, helping musicians of all levels enhance their practice and performance. Whether you're a beginner learning your first chords or a seasoned performer, our comprehensive suite of features will elevate your musical journey. Key Features: Precision Tuner: Tune any instrument with accuracy within cents. Our audio detection algorithm provides real-time feedback with stunning visual representation to achieve perfect pitch every time. Dynamic Metronome: Keep your timing impeccable with our customizable metronome. Adjust tempo, time signatures, and subdivisions to master even the most complex rhythmic patterns. Rhythm Trainer: Develop your internal timing with our interactive rhythm game. Progress through beginner to expert levels with various patterns including standard beats, syncopation, and complex time signatures. Chord Library: Access a comprehensive collection of chords for guitar, ukulele, and piano. Explore alternative positions, chord progressions, and common substitutions to enrich your compositions. Clean Interface: Navigate effortlessly between tools with our intuitive, distraction-free design that puts music first. Professional Audio Engine: Built on AudioKit, our app delivers studio-quality sound processing for precise analysis and clear audio feedback. Whether you're practicing at home, teaching in a studio, or preparing backstage, TunerPro provides everything you need to develop your musical skills with confidence. No ads, no subscriptions - just pure musical tools designed by musicians, for musicians. Download TunerPro today and experience the difference that professional-grade music tools can make to your playing.
Screenshots
Verdict
The clearest difference is ads: Tuner & Metronome at none against Operational Amplifiers Guide's shown. Tuner & Metronome also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (15.6 vs 17.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Operational Amplifiers Guide ships an update every 2 months, Tuner & Metronome every 2 weeks. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.
| Parameter | Operational Amplifiers Guide | Tuner & Metronome |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 13 MB | 3 MB |
| Age rating | 4+ | 17+ |
| Developer | ALG Software Lab SIA | 海军 王 |
In-app purchases
Operational Amplifiers Guide
No in-app purchases
Tuner & Metronome
No in-app purchases
Questions
Is Operational Amplifiers Guide free?
Is Tuner & Metronome free?
Do Operational Amplifiers Guide or Tuner & Metronome have ads?
Which is updated more often, Operational Amplifiers Guide or Tuner & Metronome?
Other comparisons















