Happy Scale for Android? The alternative: Trendcurve

In short

According to the App Store, Happy Scale is available for iPhone, iPad and Mac; we found no Android version. Like Happy Scale, Trendcurve smooths daily fluctuations into a weight trend, runs on iPhone and Android and imports the CSV file from Happy Scale.

The information about Happy Scale comes from its official website and store listings (sources below) and may change at any time. Prices vary by country. Where we found nothing, the table says "no information found".

Trendcurve and Happy Scale at a glance

Feature Trendcurve Happy Scale
Platforms iPhone and Android iPhone, iPad and Mac with Apple silicon; no Android version found
Trend calculation Four methods to choose from: exponential smoothing (default), 7-day or 14-day moving average, double exponential smoothing Moving average, with several options according to the developer; the exact formula is not published
Import and export Import of CSV files from Happy Scale, Libra, openScale and Excel plus Trendcurve backups; export as CSV and JSON, both free Export as CSV and as a backup file; imports weights from Apple Health
Forecast Goal date from your current weekly rate, planned vs. measured (Pro) Yes: predicts your future weight at your current pace
Goal Lose, gain or maintain, with a target pace and a maintenance corridor Yes: goal broken into smaller milestone goals
Medication tracking Dose markers and a weekly injection reminder (free), weekly rate per dose level (Pro) no information found
Health apps iPhone: read from and write back to Apple Health; Android: Health Connect Reads from and writes to Apple Health (not on iPad)
Pricing Free; Pro as a monthly or yearly subscription or a one-time purchase Free download; in the US App Store Deluxe costs $1.99 a month, $11.99 a year or $39.99 one-time
Languages 10 languages: German, English, French, Spanish, Italian, Portuguese, Dutch, Swedish, Norwegian, Danish 10 languages: English, Chinese (Simplified), French, German, Italian, Japanese, Korean, Portuguese, Russian, Spanish
Privacy approach No account, no own server, no ads; weigh-ins stay on your device. On iPhone an optional backup to your own iCloud account (Pro) Data stored on the device by default, no server login; sync via iCloud or Dropbox available

Where Happy Scale is stronger

  • Also runs on iPad and Mac and syncs your data between iPhone and iPad automatically.
  • Available in Japanese, Korean, Russian and Chinese, languages Trendcurve does not offer.
  • Can additionally sync data via Dropbox.

What Trendcurve does differently

  • Runs on iPhone and Android, on Android with Health Connect.
  • Four trend methods to choose from, with pros and cons explained in the app.
  • Free medication tracking for a weekly medication, with dose markers and a reminder on injection day.
  • Experiments and markers show in the chart what changed from a given day; a maintenance corridor helps once you have reached your goal.
  • Imports the CSV file from Happy Scale, so you keep your history.

Which app is right for you?

Happy Scale is the better fit if you only use Apple devices, want your data synced between iPhone and iPad, or need the app in a language Trendcurve does not have, such as Japanese or Korean.

Trendcurve is the better fit if you use an Android phone or are switching from iPhone to Android, if you want to choose the trend method yourself, or if you want to track a weekly medication.

How to move your data from Happy Scale

  1. In Happy Scale, export your weights as a CSV file. Happy Scale can send the file to email and other services, so you can save it to your cloud storage, for example.
  2. Install Trendcurve on your new device and open "Settings & more", then "Export, backup & import".
  3. Tap "Import file" and pick the CSV file. Trendcurve recognises the Happy Scale format, converts pounds and skips duplicate entries.
  4. On iPhone it also works without a file: Happy Scale writes your weights to Apple Health, and Trendcurve reads them from there.

Try it first: load your CSV file into the free trend weight calculator. It analyses the file right in your browser, nothing is uploaded.

Open the trend weight calculator

Try Trendcurve for free

For iPhone and Android, no account needed. Your weigh-ins stay on your device.

Download on the App Store Get it on Google Play

Frequently asked questions

According to the App Store, Happy Scale runs on iPhone, iPad and Mac. We found no Android version on Google Play, and the developer said in an interview that the app is currently not available for Android. Trendcurve is an alternative that runs on iPhone and Android.

Yes. Export your weights in Happy Scale as a CSV file and import it in Trendcurve under "Settings & more", "Export, backup & import". Trendcurve recognises the format, converts pounds and skips duplicate entries. On iPhone you can also go through Apple Health.

Not necessarily. Happy Scale uses a moving average but does not publish the exact formula. Trendcurve offers four methods to choose from, with exponential smoothing as the default. The curves may therefore differ slightly.

Both apps are free to download. In the US App Store, Happy Scale Deluxe costs $1.99 a month, $11.99 a year or $39.99 one-time. Trendcurve Pro is available as a monthly or yearly subscription or a one-time purchase; you can see the current prices in the app, on the App Store and on Google Play.

No. Trendcurve has no account and no own server, your weigh-ins stay on your device. On iPhone you can turn on a backup to your own iCloud account with Pro. According to the developer, Happy Scale also stores data on the device by default.

Sources

Checked in October 2026. All information about Happy Scale comes from these pages:

Trademarks belong to their owners. Trendcurve is not affiliated with Happy Scale or Front Pocket Software LLC.

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