Straight answers about the scale: why it jumps around, how to read a trend, what your BMI does and doesn't tell you, and how the apps compare. Written by the team that makes Periscope, with sources linked.
Latest · App comparisons
The best weight loss app depends on what you want help with. To simply track your results for free, Periscope gives you a trend line, reports with BMI, progress photos and widgets. For food logging, look at MacroFactor, Lose It! or MyFitnessPal; for a structured program with coaching, WeightWatchers or Noom.
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Apple Health vs a weight tracker app on iPhone: what Health's weight charts do, what they don't, and when a dedicated tracker is worth adding.
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The best BMI tracker apps for iPhone, from one-off calculators to apps that chart BMI over time, compared on price and features as of October 2026.
· 7 min read
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MyFitnessPal alternatives for weight tracking only: focused iPhone trackers and other calorie apps compared on price, trend lines, photos and Apple Health.
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Weight tracker vs calorie counter: what the research says, how much time each takes, and when a weight loss app without counting calories is enough.
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App comparisons
Periscope vs Happy Scale: price, trend lines, goal predictions, progress photos, widgets and Apple Health compared as of October 2026.
· 7 min read
App comparisons
The best progress photo apps for iPhone compared on before-and-after sliders, alignment, where photos are stored, weight tracking and price (Oct 2026).
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Free weight tracker and weight loss apps with no subscription for iPhone: which are truly free, which hide a paywall, and which cost once (Oct 2026).
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App comparisons
How to pick a private weight tracker for iPhone: where data is stored, accounts, analytics, locks and export, with apps compared as of Oct 2026.
· 8 min read