Favero Assioma App Guide: Best Settings for Accurate Power

When you invest in a power meter, you’re not just buying hardware — you’re buying precision. The Favero Assioma Duo and Favero Assioma Uno are among the most accurate pedal-based power meters available today. They’re trusted by serious amateurs and competitive riders alike.

But here’s what many cyclists overlook:
Even the most accurate power meter can give flawed data if it isn’t configured properly. That’s where the Favero Assioma app becomes essential. This guide walks you step-by-step through the app, explains the best settings for accurate power readings, and highlights small adjustments that can make a meaningful difference in your training data.

If you care about FTP testing, interval precision, Zwift consistency, or race pacing, this setup matters.

Why the Favero Assioma App Is More Important Than You Think

Many riders pair their pedals directly to a bike computer and rarely open the app again. While that may work for basic use, the app controls critical settings that affect power calculation and long-term reliability. The app allows you to:

• Set crank length
• Perform zero offset calibration
• Update firmware
• Monitor battery status
• Enable advanced power features
• Diagnose connection issues

Skipping these steps can introduce small inaccuracies — and small inaccuracies compound over time.

Step 1: Proper Pairing for a Clean Start

Before diving into advanced settings, ensure your pedals are paired correctly. Wake the pedals by rotating the crank. Open the Favero Assioma app and enable Bluetooth on your phone. The app should detect nearby pedals automatically.

If you’re using the Duo version, confirm that both left and right pedals are detected separately. If your pedals have previously been paired with multiple head units, watches, or indoor apps, consider removing duplicate connections. Bluetooth conflicts can cause intermittent dropouts or inconsistent pairing. A clean pairing ensures stable communication and accurate firmware updates.

Step 2: Setting the Correct Crank Length (Critical for Accuracy)

This is arguably the most important setting in the app. Power is calculated using torque and angular velocity. Crank length directly influences torque measurement. If your crank length is set incorrectly, your wattage readings will be off.

Inside the app, navigate to the crank length setting. Confirm the value matches the number physically printed on your crank arm. Common lengths include 165mm, 170mm, 172.5mm, and 175mm.

Even a 2.5mm difference can create measurable discrepancies in power output. That may not matter for casual riding, but it absolutely matters for structured training and FTP assessments. If you ever swap the pedals to another bike, double-check this setting immediately.

Want to guarantee accurate wattage readings? Double-check your crank length in the Favero Assioma app today.

Step 3: Zero Offset Calibration — Your Pre-Ride Habit

Zero offset calibration ensures that the strain gauges inside the pedals are properly zeroed before measuring force. Temperature changes, transport, and minor installation shifts can slightly affect baseline readings. Calibration resets that baseline.

Here’s how to do it correctly:
Place your bike upright. Position one crank arm vertically up and the other vertically down. Make sure there is no pressure on the pedals. Initiate calibration from the app or your head unit. A successful zero offset confirms the system is ready for accurate measurement. For the most consistent data, make calibration part of your pre-ride routine — especially before races or key interval sessions.

Step 4: Firmware Updates — Small Updates, Big Stability Gains

Favero frequently releases firmware updates to enhance stability and optimize performance. Inside the app, check the firmware version periodically. If an update is available, fully charge your pedals before beginning. Keep your phone close and avoid switching apps during installation. Firmware updates can improve:

• Signal stability
• Data consistency
• Compatibility with head units
• Pedal synchronization

Outdated firmware doesn’t necessarily cause inaccurate power, but it can increase the risk of connection interruptions.

Step 5: Understanding IAV Power Technology

Favero Assioma pedals use IAV (Instantaneous Angular Velocity) Power technology. This system measures real-time angular velocity rather than assuming constant cadence.
Why does this matter?

If you use oval chainrings or have a highly variable pedaling style, IAV technology ensures accurate power measurement throughout the pedal stroke. In the app, confirm that IAV Power is enabled. For most riders, this setting is active by default and should remain that way. Disabling it would reduce the system to a simplified calculation model, which defeats the advantage of Assioma’s engineering.

Training with oval chainrings? Upgrade to genuine Favero Assioma pedals for industry-leading power accuracy.

Step 6: Left/Right Balance (Duo Version)

If you’re using the Duo model, the app allows you to monitor left/right power balance.nPerfect 50/50 symmetry is rare and not necessary. However, drastic imbalance may indicate:

• Incorrect installation torque
• Improper cleat setup
• Temporary fatigue
• Calibration issues

If you notice unusual balance shifts, recalibrate first. If imbalance persists, verify that the pedals were installed with proper torque specifications. Left/right data is most useful for tracking long-term trends, not obsessing over minor day-to-day variation.

Step 7: Battery Monitoring and Charging Strategy

Low battery levels can increase the risk of signal dropouts. Inside the app, monitor battery percentage regularly. Assioma pedals typically provide around 50 hours of ride time per charge. Avoid draining them completely. Recharge when levels drop below 20%. Consistent charging habits maintain battery health and reduce mid-ride interruptions. Stable battery performance equals stable data transmission.

Step 8: Advanced Troubleshooting Through the App

The Favero Assioma app also acts as a diagnostic tool. If you ever experience:

• Power spikes
• Dropouts
• Calibration errors
• Pairing issues

Use the app first before assuming hardware failure. Delete and re-pair sensors if necessary. Perform fresh calibration. Confirm crank length again. In many cases, simple reset steps resolve the issue.

Common Setup Mistakes That Affect Power Accuracy

Even experienced cyclists make small mistakes that influence data. Swapping pedals between bikes without updating crank length is common. Skipping calibration after air travel or temperature shifts can also cause inconsistencies.

Improper torque installation affects measurement stability. Assioma pedals should always be installed according to manufacturer torque guidelines. Ignoring firmware updates may introduce compatibility quirks over time. None of these are catastrophic errors — but together they impact long-term data integrity.

Why Accurate Power Data Truly Matters

If you train with power, your zones depend on accurate numbers. An inflated FTP means you train too hard. An under-reported FTP means you train too easy. Inconsistent power readings make interval workouts unreliable. Accurate power data affects:

• FTP testing
• Training zone calculation
• Pacing during races
• Indoor training consistency
• Performance trend tracking

Power-based training only works when the numbers are trustworthy. The Assioma hardware is highly accurate — but only when properly configured.

When Should You Revisit App Settings?

Revisit your settings when:

• Installing pedals on a new bike
• Changing cranksets
• Experiencing inconsistent readings
• After firmware updates
• Following travel or extreme temperature exposure

A quick review takes only minutes but protects months of training data.

Final Thoughts

The Favero Assioma app isn’t just a companion tool — it’s the control center for your power accuracy. When crank length is correct, calibration is consistent, firmware is updated, and IAV Power is enabled, Assioma pedals deliver exceptional reliability. Precision training depends on precision setup. Take ten minutes today to review your app settings. Your FTP, race pacing, and long-term performance tracking depend on it.

Ready to train smarter and ride with confidence? Shop Favero Assioma Duo and Uno pedals now and take full control of your performance data.