Libra on Android and iPhone
If you’re moving from an Android phone to an iPhone, Libra is available on both. Daniel Cachapa first released Libra Weight Manager for Android in 2010, and an iPhone version followed; libra-app.eu links to each store. Balance Point, from Rival Bear, will need iOS 18 or later on iPhone or iPad and hasn’t been released. It has no Android version and no store listing yet.
How Libra and Balance Point draw the trend
Libra’s support article describes its trend as exponential smoothing, where each new value pulls the trend toward the latest weight. How far it moves depends on the time since the previous weigh-in, which the article says suits longer gaps. The smoothing period defaults to seven days and can be changed in advanced preferences, and the App Store release notes add trend values for body composition metrics.
Balance Point’s trend is produced by a statistical filter suited to weigh-ins on an irregular schedule, and later readings go back and refine the history behind it. A shaded range follows the line and widens where readings are scarce. Missing days stay blank, since estimates are calculated only for display and never kept as weigh-ins.
Forecasts side by side
Libra fits a straight line through the trend values in its forecast window (a week unless you change it) and extends it six months. With two weigh-ins in the window it connects their trend values; with one, it estimates the trend at the start of the window and carries it forward. The support page reminds readers that past performance is no guarantee of future results, and an App Store release note says the line runs only to the goal date when the goal is reachable.
Balance Point reports a span of dates for reaching the goal, and shows none if the recent record is thin. Once a campaign spans 112 days with at least 20 weigh-ins and clear curvature, it switches to a curve model that can place the trend’s resting point above the goal. The plan line from the pace you picked is drawn separately and labeled as yours.
Sync, sharing, and accounts
Libra keeps your history in the Libra Cloud, with online backups and real-time sync across devices on the free tier. You can connect with friends to see each other’s data as it updates, which the site suggests for gym partners or a health advisor. Pro removes ads and lifts the sharing limit. It also includes full access to Libra’s API. Libra’s support pages describe deleting an account from Settings, but they don’t say whether you need one to start.
Balance Point needs no account, and Rival Bear runs no server for it. Records live on the device; a JSON export holds every record and can be imported again after a preview of counts and duplicates. It has no social features.
What else each app tracks
Libra records weight, body fat, muscle mass, and other body metrics, with BMI analysis and free-text notes. Older records can come in through CSV import. Smart scales reach it through Apple Health or Health Connect, and both store listings mention connecting a Withings scale.
Balance Point covers BMI with healthy-range context and a US Navy tape estimate of body fat, labeled as an estimate. It also takes daily intake totals and turns them into an adaptive estimate of energy burned. Treatments such as GLP-1 medications can be logged with their doses, which then appear as marks on the chart.
Picking Libra or Balance Point
Libra makes sense if you want the same app on Android and iPhone, or a free tier with charts you can share among friends, and its Pro pricing is published. Balance Point makes sense if you’d like gaps left empty and the forecast’s uncertainty in plain view, especially if logging treatments or intake beside the trend matters to you. The weight trend guide explains what Balance Point’s line represents.