Watta vs Runna: The Erg App vs the Running App

By the Watta Team · Updated 9 October 2026

Quick Verdict

Runna and Watta serve different sports entirely. Runna is an adaptive running plan app that builds personalised training schedules for 5K through marathon distances. Watta is an AI-powered erg workout tracker for indoor rowers. If you row and run, you likely need both. If indoor rowing is your primary training, Watta provides the erg-specific analytics that Runna simply does not offer.

Watta vs Runna: Watta is a free, AI-powered rowing workout tracker purpose-built for erg athletes. It features OCR screen capture, a 0-100 Effort Score (cardiac load 40%, work output 35%, pacing 15%, economy 10%), Karvonen heart rate zones, clubs and squads. Free on iPhone.

Feature Comparison

Feature	Watta	Runna
Primary Sport	Indoor rowing / erg training	Running (5K to marathon training plans)
Workout Logging	AI OCR captures all data from a photo of your erg screen	GPS-based auto-tracking for outdoor runs; Apple Watch integration
Training Plans	No structured plan builder — focused on session capture and analysis	Adaptive AI-generated running plans that adjust based on your progress
Effort Scoring	0-100 Effort Score with four rowing-specific components	No composite effort score; uses pace zones and heart rate feedback
Heart Rate Zones	Karvonen method with five personalised zones	Heart rate zones integrated into run plan targets
Cross-Training Support	Purpose-built for Concept2 RowErg, SkiErg, and BikeErg	Running only — no rowing or cross-training features
Price	Free	$14.99/month or $79.99/year for full plan access

Why Choose Watta

+Purpose-built erg analytics that no running app can replicate — split trends, stroke rate, watts per stroke
+AI OCR eliminates manual data entry for indoor rowing sessions
+Free access to full feature set including Effort Score and heart rate analysis

Where Runna Excels

+Best-in-class adaptive running plans that adjust week-to-week based on your fitness and race goals
+Seamless Apple Watch and GPS integration for outdoor run tracking

Detailed Breakdown

Runna and Watta are not direct competitors — they serve different sports. The comparison is relevant for the many athletes who cross-train between rowing and running. Runna is excellent at what it does: building personalised, adaptive running training plans that respond to your progress. If you are training for a 5K, 10K, half marathon, or marathon, Runna's AI-driven plan adjustments are genuinely useful. However, Runna has zero erg tracking capability. It cannot read a Concept2 screen, it does not understand split time or stroke rate, and it has no concept of rowing-specific metrics like watts per stroke or pacing consistency. If you are a rower who also runs, the ideal setup is Watta for your erg sessions and Runna for your running plan. If indoor rowing is your primary training modality, Watta is the only app in this comparison that can actually capture and analyse your workouts.

Frequently Asked Questions

Can Runna track rowing workouts?

No. Runna is exclusively a running app. It does not support rowing, erging, or any non-running activity. For erg tracking, you need a dedicated rowing app like Watta.

I row and run — should I use both apps?

Yes. Watta for your erg sessions gives you AI-powered capture and rowing-specific Effort Scores. Runna for your running gives you adaptive training plans. Both sync to Strava if you want a unified activity feed.

Is rowing a good cross-training activity for runners?

Absolutely. Rowing builds cardiovascular fitness with minimal impact stress, strengthens the posterior chain, and develops core stability. Many running coaches prescribe erg sessions as cross-training, especially during injury recovery.

Every erg counts.

Photograph your erg screen after the piece and Watta logs it for you.

Download on the App Store

iPhone, iOS 15.1 or later · no subscription · Android beta

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