Comparison

Snap2Go vs Operational Amplifiers Guide

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

Head to head
About

Snap2Go

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Snap2Go: Link Inspector & Privacy Guard From Image to Action — Select, Trace, and Verify. Snap2Go extracts and verifies URLs from any image before you tap. Screenshot, flyer, or document — know exactly where a link leads. Lasso Vision Draw a circle around the link you want. Only your selection is analysed — everything else on the page is ignored. Beyond Basic Link Scanning Most link scanners stop at reading a URL — they can't tell you where it actually leads. Snap2Go goes further: * Unshortener — Expands bit.ly, t.co, and other shortened URLs to reveal the true destination before you tap. * Redirect Tracer — Follows the full redirect chain and shows you exactly where a link ends up, with no hidden stops along the way. * Connectivity Check — Instantly flags broken or unavailable links, so you never land on a dead end. Safety Features * PhishTank Integration (optional) — Cross-reference links against PhishTank, a community-maintained phishing database. Coverage and accuracy depend on community contributions and are not guaranteed. Fully user-controlled and can be disabled at any time. Core Features * Capture live photos or import screenshots from your library * Smart History Hub: your last 20 scans, organised for quick access * Approval-First privacy: you control which features and databases are active * Lightweight native iOS — built for speed and reliability How it works: Snap → Lasso → Analyze → Go Stop guessing where links lead. Get the full picture with Snap2Go.

About

Operational Amplifiers Guide

Features
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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!

Screenshots

Snap2Go4 screens
Operational Amplifiers Guide4 screens

Verdict

The call

The clearest difference is ads: Snap2Go at none against Operational Amplifiers Guide's shown. Operational Amplifiers Guide's advantage is update cadence (every 2 months vs every 9 months). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Snap2Go ships an update every 9 months, Operational Amplifiers Guide every 2 months. Both last shipped on November 6, 2026.

Scorecard2 real differences · 4 level
Snap2Go versus Operational Amplifiers Guide: the parameters behind the verdict, then further details
ParameterSnap2GoOperational Amplifiers Guide
PriceFreeFree
Update frequencyEvery 9 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size3 MB13 MB
Age rating4+4+
DeveloperLeung Man Ho ThomasALG Software Lab

In-app purchases

None

Snap2Go

No in-app purchases

None

Operational Amplifiers Guide

No in-app purchases

Questions

Is Snap2Go free?
Snap2Go is free to download, with no in-app purchases.
Is Operational Amplifiers Guide free?
Operational Amplifiers Guide is free to download, with no in-app purchases.
Do Snap2Go or Operational Amplifiers Guide have ads?
Operational Amplifiers Guide shows ads; Snap2Go does not.
Which is updated more often, Snap2Go or Operational Amplifiers Guide?
Snap2Go ships an update every 9 months, and Operational Amplifiers Guide every 2 months. Most recently, Snap2Go was updated on November 6, 2026 and Operational Amplifiers Guide on November 6, 2026.

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