EMWaver vs Tenio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EMWaver
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EMWaver is a local-first electronics lab for iPhone and iPad. Connect a supported ESP32-S3 or STM32-based board, run JavaScript scripts, inspect device signals, manage bundled firmware, and use optional Agent assistance with your own API key. Local hardware control does not require an EMWaver account, cloud activation, hosted relay, subscription, or device ownership check. Scripts and core device workflows stay on your device by default. Use EMWaver to: • Run local scripts against supported microcontroller boards • Inspect device state and hardware signals from a mobile-first interface • Manage app-bundled firmware workflows for supported targets • Keep script-first hardware experiments out of the compile/flash/debug loop • Ask the optional Agent for script and troubleshooting help when you provide an API key EMWaver is open-source and built by Continual MI.
Tenio
This app provides a suite of calculators and converters for electronics enthusiasts, students, and makers. It helps users quickly solve circuit tasks, decode component markings, and calculate values for resistors and capacitors, speeding up project development.
- Resistor color code calculator
- SMD resistor code converter
- LED resistor calculator
- Series & parallel resistor calculator
- SMD capacitor code calculator
- Series & parallel capacitor calculator
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Tenio: Electronics Toolkit Lab is a practical set of calculators and converters built for makers, students, engineers, and electronics enthusiasts. Quickly solve common circuit tasks, decode component markings, and speed up your projects—right from your phone. Key Features • Resistor Color Code → Value (and Value → Color Code) • SMD Resistor Code → Resistance • LED Resistor Calculator (ideal resistor for your LED circuit) • Series & Parallel Resistor Calculator • Trimpot Code ↔ Resistance Converter • SMD Capacitor Code → Capacitance • Series & Parallel Capacitor Calculator • Capacitor Code ↔ Capacitance Converter Whether you’re prototyping on a breadboard, working on Arduino projects, studying for exams, or designing real circuits—Tenio helps you calculate faster and build with confidence.
Screenshots
Verdict
The clearest difference is update cadence: Tenio at every 4 months against EMWaver's every 12 months. Tenio also leads on iOS requirement (15.0 vs 17.0). 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. Neither carries in-app purchases, so what you see is what you pay.
EMWaver ships an update every 12 months, Tenio every 4 months. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.
| Parameter | EMWaver | Tenio |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 12 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Luis Lopes | Samuel Rodas Aroche |
In-app purchases
EMWaver
No in-app purchases
Tenio
No in-app purchases









