Calorie Tracker Guide · 2026-11-14
Verdict
1st Phorm prices as Free · 4 in-app purchase option(s). Senza: Keto & Fasting prices as Free. 1st Phorm is marked for Photo logging, Audio logging, Text logging. Senza: Keto & Fasting is not. Senza: Keto & Fasting is marked for Fasting. 1st Phorm is not. Editorial scores are 6.1 for 1st Phorm and 5.2 for Senza: Keto & Fasting, on a 10-point scale. That score is not the store rating.
Price
1st Phorm: Free · 4 in-app purchase option(s).
Senza: Keto & Fasting: Free.
Monthly figure: 1st Phorm $29.99, Senza: Keto & Fasting unknown.
Yearly figure: 1st Phorm $179.99, Senza: Keto & Fasting unknown.
Features that differ
Photo logging: only 1st Phorm is marked available. Mentioned in the App Store description.
Audio logging: only 1st Phorm is marked available. Mentioned in the App Store description.
Text logging: only 1st Phorm is marked available. Mentioned in the App Store description.
Water tracking: only 1st Phorm 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 1st Phorm is marked available. Mentioned in the App Store description.
Fit
1st Phorm has no best-fit line.
Senza: Keto & Fasting has no best-fit line.
Where the scores differ
Pricing value: 1st Phorm 0, Senza: Keto & Fasting 10. 1st Phorm: 10 - annualised price $179.99/15 (+0.5 if free trial). Senza: Keto & Fasting: 10 - annualised price $0.00/15 (+0.5 if free trial).
Ease of use: 1st Phorm 7.8, Senza: Keto & Fasting 5. 1st Phorm: 5 + 5 x best quality of fast-logging features (AI image/text/audio, barcode). Senza: Keto & Fasting: 5 + 5 x best quality of fast-logging features (AI image/text/audio, barcode).
Feature depth: 1st Phorm 4.2, Senza: Keto & Fasting 2.3. 1st Phorm: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10. Senza: Keto & Fasting: Quality-weighted share of tracked features available (excellent 1.0 .. poor 0.2), x1.6, capped at 10.
Beginner friendliness: 1st Phorm 8.6, Senza: Keto & Fasting 7. 1st Phorm: 60% easeOfUse + 40% beginner skill-level fit. Senza: Keto & Fasting: 60% easeOfUse + 40% beginner skill-level fit.
User feedback: 1st Phorm 8.6, Senza: Keto & Fasting 9. 1st Phorm: Bayesian rating 4.64 (iOS 4.66x5842 + Play 0.00x0, prior 4.3x200) + review stars sentiment +0.80 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: 1st Phorm 8.2, Senza: Keto & Fasting 1.7. 1st Phorm: Last release 11 days ago (half-life 90d, 70%) + median 22 days between releases (30%). Senza: Keto & Fasting: Last release 332 days ago (half-life 90d, 70%) + median 47 days between releases (30%).
Traction: 1st Phorm 6.3, Senza: Keto & Fasting 6.8. 1st Phorm: log10 of 5842 total ratings (iOS+Play), 1M ratings = 10. Senza: Keto & Fasting: log10 of 12723 total ratings (iOS+Play), 1M ratings = 10.
Coachability: 1st Phorm 5.5, Senza: Keto & Fasting 0. 1st Phorm: Best quality of aiCoach / coachConnection features. Senza: Keto & Fasting: Best quality of aiCoach / coachConnection features.
Who should pick which
Choose 1st Phorm if you need Photo logging and Audio logging. Choose Senza: Keto & Fasting if you need Fasting.