Electronic Formulator vs Awesome Scanner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electronic Formulator
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Electronic Engineer puts over 1,100 formulas and 24 reference tables in your pocket. No internet required. No ads. Just fast, accurate calculations when you need them. POWERFUL CALCULATORS Solve real-world electrical problems instantly: • Ohm's Law — Voltage, current, resistance, and power calculations • Voltage Divider — Output voltage, resistor values, current, and power dissipation • Three-Phase Power — Balanced systems, Wye and Delta connections • LED Circuits — Series resistor selection, power dissipation, max LEDs in series • 555 Timer — Astable and monostable modes with frequency, duty cycle, and timing • RLC Circuits — Resonant frequency, Q factor, bandwidth, impedance, and reactance • Power Triangle — Real, reactive, and apparent power with PF correction sizing • Impedance & Resistance — AC/DC circuit analysis • Star-Delta Conversion — Transform between Y and Δ configurations • Wheatstone Bridge — Unknown resistance and unbalanced bridge voltage • Inductors — Reactance, energy storage, series/parallel, and time constants • Wire Sizing — Circular mils, voltage drop (single and three-phase) • Capacitors, Transformers, Motors, Batteries, UPS, Lighting, and more PRO CALCULATORS Unlock advanced tools for professionals: • Op-Amp Circuits — Inverting, non-inverting, differential, and voltage follower • Filter Design — RC and RL low-pass, high-pass, and bandpass filters • PCB Trace Width — IPC-2221 current capacity and trace resistance • Skin Effect — Depth calculations for copper and custom conductors 24 REFERENCE TABLES Instantly look up critical data — no more flipping through handbooks: • AWG Wire Gauge — Diameter, area, resistance, and ampacity • NEC Ampacity Table — 60°C, 75°C, and 90°C conductor ratings • Resistor Color Codes — 4-band and 5-band decoding • Standard Resistor Values — E12, E24, E48, and E96 series • Circuit Breaker Sizes — Amp ratings, wire sizes, and typical applications • Wiring Color Codes — NEC, IEC, and Australian standards • Logic Gates Truth Tables — AND, OR, NAND, NOR, XOR, XNOR • Transformer Connections — Delta, Wye, Scott-T, Zig-Zag, and more • Power Factor Reference — Typical PF for motors, lighting, drives, and loads • SI Prefixes — From tera to femto with electronics examples • Conductor Properties — Resistivity, conductivity, and temp coefficients • Common Semiconductor Pinouts — BJTs, MOSFETs, regulators, 555, 741 • NEMA Enclosure Types — Indoor/outdoor ratings with IP equivalents • IP Protection Ratings — Solids and liquids protection levels • Ampacity Derating Factors — Temperature and conduit fill corrections • Standard Capacitor Values — Ceramic, film, and electrolytic • Cable Types — THHN, THWN, NM-B, MC, UF-B, and more • Decibel Reference — Power and voltage ratios at a glance • Motor Frame Sizes, Fuse Classes, Conduit Fill, and more UNIT CONVERSIONS Over 400 conversion formulas across 19 categories including metric, linear, liquid, cubic, pressure, weight, flow, BTU, horsepower, watts, joules, frequency, and HVAC. Plus 8 temperature scales: Celsius, Fahrenheit, Kelvin, Rankine, Réaumur, Delisle, Newton, and Rømer. BUILT FOR YOUR WORKFLOW • Favorites — Star the calculators you use daily for one-tap access • Calculation History — Every result saved automatically for easy reference • Export & Share — Send results to colleagues or save for documentation • Search & Filter — Find any formula or reference table in seconds • Dark Mode — Designed for comfortable use on job sites and in the field • US & Metric — Toggle between unit systems instantly WHY ELECTRONIC ENGINEER? Built by engineers, for engineers. We obsessed over accuracy, speed, and completeness so you can focus on what matters — getting the job done right. One purchase, no subscriptions, no recurring fees.
Awesome Scanner
Transform your iPhone into a powerful scanner. This app offers automatic edge detection, perspective correction, and various processing options for your documents. Easily organize, enhance, and share your scans as PDFs or JPEGs, with OCR capabilities and secure storage.
- Automatic document edge detection
- Perspective correction
- Color, grayscale, and B/W processing
- Auto and custom document enhancement
- Single and multi-page document support
- Cloud storage integration (Dropbox, Google Drive, Evernote)
- Text Recognition (OCR)
- Passcode/Biometric security
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Get Awesome Scanner and turn your iPhone into a smart scanner! WHY YOU SHOULD GET AWESOME SCANNER - Extremely simple to use - Automatic detection for document edges - Automatic perspective correction - Can process scans as colored, grayscale, and black/white - Auto document enhancement and noise removal - Custom document enhancement (change brightness/contrast, and rotate) - Supports single and multi-page documents - Ability to upload your scans to Dropbox, Evernote, and Google Drive. - Ability to convert scans to editable text (Text Recognition). - Ability to safe and secure your document using a passcode or Face ID and Touch ID. EVEN MORE - Scan can be captured by the camera or imported from Photos - Scan can be shared (via email), printed, or saved to Photos - Includes a document viewer for viewing the scanned documents (with ability to zoom in/out). - Supports adding new pages to existing documents (or deleting pages from it). - Can convert scans to PDF documents or JPEG images. - Ability to set the page size for the generated PDF (e.g. A4, A3, letter, ledger, business card, etc…). - Sort scans by name or scan date - Search for documents and papers via the Search tool - Ability to rename documents and papers If you have any questions, need help, or would like to request a feature, please do not hesitate to contact us. We respond to EVERY email we receive. Our support email is: support@symfonies.com
Screenshots
Verdict
The clearest difference is update cadence: Electronic Formulator at every 9 days against Awesome Scanner's every 2 months. Awesome Scanner's advantage is iOS requirement (11.0 vs 26.2). On price, ads, 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. Electronic Formulator sells 1 one-off in-app purchase and Awesome Scanner sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Electronic Formulator ships an update every 9 days, Awesome Scanner every 2 months. The most recent releases landed on October 29, 2026 and October 23, 2026 respectively.
| Parameter | Electronic Formulator | Awesome Scanner |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.6 (130 ratings) — better |
| Positive reviews | — | 85.2% of reviews |
| Number of ratings | — | 130 — better |
| Update frequency | Every 9 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 26.2 | 11.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Historycentral.com | Symfonies, Inc. |
In-app purchases
Electronic Formulator
- Electronic Pro$2.99
Awesome Scanner
- Remove Ads$0.99
- OCR$0.99
- Lock Document$0.99
Questions
Is Electronic Formulator free?
Is Awesome Scanner free?
Do Electronic Formulator or Awesome Scanner have ads?
Which is updated more often, Electronic Formulator or Awesome Scanner?
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