Signos vs Levels — Side-by-Side Comparison

Signos vs Levels (2026)

Signos and Levels are the two CGM programmes most often compared once buyers narrow the field to Dexcom G7-platform hardware (Levels now ships Stelo, the OTC version). Same sensor platform underneath, different goals on top. Signos was built for weight loss — an AI agent pushing meal-by-meal nudges to flatten glucose spikes. Levels was built as a biohacker insight engine — the deepest meal-impact analytics with a credible medical advisory board. The decision is about which job you have.

Signos or Levels: which is better?

Higher ONDA score: Levels (8.2 vs 7.5)

Different jobs. Signos for weight loss with AI coaching pushing daily behaviour change. Levels for ongoing biohacker insight without a weight-loss framing.

Head-to-head breakdown

Signos vs Levels — head-to-head comparison by criterion
Criterion	Winner	Why
Sensor accuracy	Tie	Same Dexcom G7 platform and the same accuracy. Signos ships G7 (10-day wear); Levels now ships Stelo (15-day wear, no prescription). Near-identical on sensor.
Programme goal	Tie	Signos: weight loss via glucose-spike management. Levels: general biohacker insight. Different jobs.
Coaching model	Signos	Signos: real-time AI agent surfacing meal-by-meal nudges and exercise prompts. Levels: app-only insights, no real-time coaching.
Insight depth	Levels	Levels has the deeper meal-impact engine — AUC decomposition, food-by-food ranking history, time-in-range views. Signos is competent but weight-loss framed.
Content library	Levels	Levels has a substantial editorial library backed by its medical advisory board. Signos leans on the AI nudges instead.
Behavioural directiveness	Signos	Signos is the most directly behavioural programme in the category — it tells you what to do in the moment. Levels surfaces the data and trusts you to interpret it.
Weight-loss outcome data	Signos	Signos publishes company outcome data for weight-loss specifically. Levels does not market a weight-loss outcome at all.
Price	Tie	Signos: $140–$160/month with continuous sensors. Levels: $399–$1,329/year membership with 1–2 months of CGM included; extra CGM is an add-on. Levels is cheaper for occasional CGM blocks; Signos is simpler for continuous wear.

Choose Signos

Choose Signos if weight loss is the primary reason you are wearing a CGM and you respond well to in-app AI nudges — meal-by-meal suggestions, exercise prompts, snack-stack advice.

Choose Levels

Choose Levels if you treat CGM as a general-purpose biohacker instrument — running protocols, tracking time-in-range, iterating on meal experiments without a weight-loss frame.

The short version

Signos and Levels ship the same Dexcom G7-platform sensor (Levels via Stelo). The decision is whether you want AI weight-loss coaching or a general-purpose biohacker insight engine. They solve different jobs, even though they look like the same product.

When is Signos the right pick?

If weight loss is the explicit reason you are wearing a CGM and you respond well to in-app AI nudges pushing meal-by-meal recommendations, Signos is the right shape. The behavioural directiveness is the value — and it costs ~$500/year less than Levels.

When is Levels the right pick?

If you treat CGM as a general-purpose self-experimentation instrument — running fasting protocols, tracking time-in-range as a metric, iterating on food curves week by week without a weight-loss frame — Levels is the right shape. The deeper insight engine and the broader content library are what the premium pays for.

Common questions

Should I pick Signos or Levels?

Signos if weight loss is the primary goal and you respond to AI coaching nudges. Levels if you treat CGM as a general biohacker instrument and want the deepest insight engine without a weight-loss framing. Different jobs.

Are Signos and Levels the same hardware?

Very close. Signos ships Dexcom G7 and Levels now ships Dexcom Stelo, the over-the-counter sensor built on the G7 platform, with the same accuracy. The real difference is the app, the coaching model and the framing.

Does Signos really work for weight loss?

Company outcome data shows meaningful loss in the user base; independent peer-reviewed validation is thinner. The AI coaching loop is the behavioural mechanism — for users who respond to in-app nudges it works; for users who do not, the data alone is not what makes Levels different.

Is Signos cheaper than Levels?

Not on the headline price any more. Signos is $140–$160/month with continuous sensors; Levels now sells annual memberships ($399 Core with one month of CGM, $1,329 Complete with two months) and charges extra for more CGM. For occasional CGM blocks Levels is cheaper; for continuous wear the gap narrows.