Comparison

Nurmi vs Somnus

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Nurmi

Features
Read full description

Nurmi is your always-on, always-adapting coach. It starts by learning who you are, your goals, schedule, and training history. Then it watches how you actually improve, using your wearable data to build a smart, flexible plan. And that plan updates every single day. Miss a session? Travel? Life happens, Nurmi adapts instantly and tells you why. The more you train, the smarter it gets. And across every workout, it talks to you like a real coach with feedback, encouragement, and clear guidance. Nurmi currently supports running, swimming and strength & conditioning, and is available for individuals training with an Apple Watch or Garmin watch. We're actively working on support for more sports, more wearable devices, and in-app workout recording, coming soon. Terms of Use: Apple Standard EULA applies: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Somnus

This app analyzes your daily habits and sleep data to uncover patterns influencing your sleep quality. It offers a system to test habit changes and provides personalized, data-driven insights to improve your sleep score. All analysis is performed on-device for maximum privacy.

Highlights
  • On-device AI analysis
  • Habit and sleep pattern detection
  • Sleep experiment system
  • Personalized insights
  • Sleep score breakdown
  • Causal pattern detection
Read full description

What if your sleep data could tell you exactly what to change? Somnus doesn't just track sleep — it finds hidden patterns between your daily habits and sleep quality, then gives you a system to prove they work. All analysis runs on-device using Apple Intelligence. Your health data never leaves your phone. DISCOVER WHAT DRIVES YOUR SLEEP Somnus analyses 25+ health signals — sleep stages, heart rate, HRV, steps, exercise, bedtime consistency, and more — to find the specific habits that move your sleep score. Not generic tips. Your patterns, from your data. - Personalised insights backed by statistical evidence - Causal pattern detection: find what improves your sleep, not just what correlates - Confidence levels show how strong each signal is - Categories: Sleep, Activity, Recovery, Circadian, Stress RUN SLEEP EXPERIMENTS Found a pattern? Test it. Create structured plans to prove whether a habit change works — with measurable before-and-after tracking. - Set targets like "bed by 11 PM" or "run 3x per week" - Automatic daily hit/miss adherence detection - Compare sleep scores on target nights vs off-target nights - AI-generated weekly reviews summarise progress - Track record calendar, streaks, and impact analytics SLEEP SCORE BUILT ON SCIENCE Your nightly score draws from four research-backed pillars: duration, continuity, regularity, and sleep architecture. Apple Watch stage data adds deep sleep and REM analysis. - "Vs Usual" comparison for every night - 7, 30, and 90-day trends - Perceived sleep slider: how you feel vs what the data shows - Tap any night for a full breakdown 100% ON-DEVICE. ZERO CLOUD. Apple Intelligence generates personalised narratives and plan summaries entirely on your iPhone. No accounts. No uploads. No ads. No tracking. FREE - Nightly sleep score with detailed breakdown - 7 and 30-day trend charts - Perceived sleep tracking - Your first data-driven insight SOMNUS PRO - Full insight library with 25+ behavioural signals - Sleep experiment system with plans and analytics - Advanced recovery metrics (HRV, resting HR, respiratory rate) - AI-powered weekly plan reviews - Causal pattern detection engine Prices vary by location. Payment charged to your Apple ID. Subscriptions auto-renew unless cancelled 24 hours before the period ends. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://sebo17.wixsite.com/thryve/somnus-privacy Somnus requires Apple Health and works best with Apple Watch or a compatible sleep tracker. Somnus provides data-driven insights, not medical advice. Consult a healthcare professional for medical concerns.

Screenshots

Nurmi4 screens

Verdict

The call

Nurmi and Somnus are too close to call on the numbers: across 3 compared parameters — price, in-app purchases and iOS requirement among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Nurmi sells 2 in-app purchases, starting at $17.49 per month and Somnus sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Nurmi versus Somnus: the parameters behind the verdict, then further details
ParameterNurmiSomnus
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 10 days—
AdsNo—
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone — better—
Requires iOS26.026.0
Further details — not scored
Size57 MB16 MB
Age rating17+17+
DeveloperClifton Steps LimitedSebastian Olsen

In-app purchases

2 purchases

Nurmi

Subscriptions2
  • Monthly$17.491 Month
  • Annual1 Year trial$119.991 Year
3 purchases

Somnus

Subscriptions2
  • Monthly3 Days trial$2.991 Month
  • Yearly$19.991 Year
One-time1
  • Lifetime$29.99

Questions

Is Nurmi free?
Nurmi is free to download, with in-app purchases available.
Is Somnus free?
Somnus is free to download, with in-app purchases available.

Other comparisons