Weekly
$1.99/week
For a short, focused push — a cut, a bulk, a deadline. About $103 a year if you stay, and we'd rather show you that math than hide it.
MAINTAIN
Maintenance is the often-missing phase where ordinary fluctuation can look like failure. Trendline helps put the range back in view.
The goal changes from moving in one direction to holding within a useful range. That deserves different feedback, not a recycled loss chart.
Body weight naturally varies. A maintenance story should distinguish ordinary movement from a sustained drift without pretending the boundary is medically authoritative.
Trendline is built around transitions between losing, building, and maintaining so the product remains useful when the phase changes.
Watch your range with the free Weight Trend Calculator — it separates ordinary movement from sustained drift, right in your browser.
THE APP UP CLOSE
The real dashboard in maintenance, running the app's sample readings. Most trackers have nothing to say once the goal is met. Here is what this one says.
The headline
“You're in your range.” Four words, no exclamation, no streak. Maintenance done well is uneventful, and the interface is allowed to be uneventful with it.
The weight tile
The current reading is 189.9 lb inside an 188–192 lb range. A band is the useful unit for this phase, so movement is judged against the band rather than against one target number.
The milestone
The card reports 83% in range — 39 of 47 tracked days. The achievement being counted is holding, which a finish-line tracker has no way to describe.
A real screen from the app, running fictional sample readings. No person’s health record is shown.

PRICING WITHOUT SURPRISES
Weekly, monthly, and annual subscriptions include a seven-day introductory trial when Apple confirms eligibility. Lifetime is a one-time purchase with no trial or renewal. The full app is available during a subscription trial, and every price below shows the math apps usually make you do yourself.
$1.99/week
For a short, focused push — a cut, a bulk, a deadline. About $103 a year if you stay, and we'd rather show you that math than hide it.
$5.99/month
About $72 a year. Month to month, cancel any time.
$39.99/year
About $3.33 a month — 44% less than paying monthly. The plan that assumes Trendline earns its place.
$99.99 once
Hate subscriptions? Own it forever. No renewals, ever.
Prices in USD; App Store pricing may vary by region. Apple confirms trial eligibility before purchase. Full details in the Terms.
KEEP THE SIGNAL
Trendline helps you see the sustained direction without overreacting to a single reading.
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