BiRemote vs Operational Amplifiers Guide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BiRemote
Control your 3D printer remotely via Wi-Fi. Monitor print progress, pre-heat components, and transfer files directly from cloud storage or network shares. Supports dual-extruder printers running Marlin firmware.
- Remote Wi-Fi connectivity
- Print progress monitoring
- Pre-heat bed and extruders
- File transfer from cloud/network
- Folder and subfolder support
- Dual extruder support
Read full descriptionHide full description
The app is working with 3D printers (dual extruders) based on the Marlin Firmware. Currently compatible printers - Bibo2 3D with dual extruder V2.1 - Support uninterrupted upload when leaving app - Remember Pre-heat steps selected V2.0 - File Transfer from any location to SD/USB - Support transfer to subfolders - Google Drive, SMB share, DropBox, iCloud native support - Optimizations V1.1 - Folders and subfolders are now supported on SD/USB - Graphic improvement for iPAD and M1 -Macs - Possible to change pre-heat values in step of 10 degree V1.0 allows you to: - Connect to your printer over Wifi - Monitor printer state and print progress - Allow you to Pre-heat the bed and extruders - Position bed and extruders for maintenance - Let you remotely select a file and print from SD or USB Note that on your machine go into the wifi settings and you should find the IP address. Works in both AP and STA mode.
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!
Screenshots
Verdict
The clearest difference is ads: BiRemote at none against Operational Amplifiers Guide's shown. BiRemote also leads on iOS requirement (14.2 vs 16.0). On price, update cadence, 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.
BiRemote ships an update monthly, Operational Amplifiers Guide every 2 months. The most recent releases landed on October 14, 2026 and October 1, 2026 respectively.
| Parameter | BiRemote | Operational Amplifiers Guide |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.2 — better | 16.0 |
| Further details — not scored | ||
| Size | 3 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Per Kristiansson | ALG Software Lab |
In-app purchases
BiRemote
No in-app purchases
Operational Amplifiers Guide
No in-app purchases
Questions
Is BiRemote free?
Is Operational Amplifiers Guide free?
Do BiRemote or Operational Amplifiers Guide have ads?
Which is updated more often, BiRemote or Operational Amplifiers Guide?
Other comparisons















