Calorie Tracker Guide · 2026-11-14
Verdict
Nutrisystem prices as Free · 1 in-app purchase option(s). Senza: Keto & Fasting prices as Free. Nutrisystem is marked for Water tracking, Coach connection. Senza: Keto & Fasting is not. Senza: Keto & Fasting is marked for Apple Health, Fasting. Nutrisystem is not. Editorial scores are 4.5 for Nutrisystem and 5.2 for Senza: Keto & Fasting, on a 10-point scale. That score is not the store rating.
Price
Nutrisystem: Free · 1 in-app purchase option(s).
Senza: Keto & Fasting: Free.
Features that differ
Apple Health: only Senza: Keto & Fasting is marked available. Mentioned in the App Store description.
Water tracking: only Nutrisystem is marked available. Mentioned in the App Store description.
Fasting: only Senza: Keto & Fasting is marked available. Mentioned in the App Store description.
Coach connection: only Nutrisystem is marked available. Mentioned in the App Store description.
Fit
Nutrisystem has no best-fit line.
Senza: Keto & Fasting has no best-fit line.
Where the scores differ
Pricing value: Nutrisystem 5.3, Senza: Keto & Fasting 10. Nutrisystem: 10 - annualised price $69.99/15 (+0.5 if free trial). Senza: Keto & Fasting: 10 - annualised price $0.00/15 (+0.5 if free trial).
User feedback: Nutrisystem 3.5, Senza: Keto & Fasting 9. Nutrisystem: Bayesian rating 4.03 (iOS 4.03x2068 + Play 3.97x594, prior 4.3x200) + review stars sentiment -0.70 over 20 reviews. Senza: Keto & Fasting: Bayesian rating 4.72 (iOS 4.78x10816 + Play 4.44x1907, prior 4.3x200) + review stars sentiment +0.45 over 20 reviews.
Maintenance: Nutrisystem 7.7, Senza: Keto & Fasting 1.7. Nutrisystem: Last release 12 days ago (half-life 90d, 70%) + median 36 days between releases (30%). Senza: Keto & Fasting: Last release 332 days ago (half-life 90d, 70%) + median 47 days between releases (30%).
Traction: Nutrisystem 5.7, Senza: Keto & Fasting 6.8. Nutrisystem: log10 of 2662 total ratings (iOS+Play), 1M ratings = 10. Senza: Keto & Fasting: log10 of 12723 total ratings (iOS+Play), 1M ratings = 10.
Coachability: Nutrisystem 5.5, Senza: Keto & Fasting 0. Nutrisystem: Best quality of aiCoach / coachConnection features. Senza: Keto & Fasting: Best quality of aiCoach / coachConnection features.
Who should pick which
Choose Nutrisystem if you need Water tracking and Coach connection. Choose Senza: Keto & Fasting if you need Apple Health and Fasting.