ML revenue forecast.
Calibrated against 77129 apps in this category.
Confidence band
±15%
High — many comparable apps with verified data
At a glance
Earns 1.69× more than the category median (189/mo).
Ranks #19,914 of 77,129 in Tools (top 25.8% by revenue).
Launched Dec 19, 2015 · last updated Jun 10, 2025.
What the app looks like
Live screenshots from the Play Store, captured by our snapshot worker. Tap any image to enlarge.
Ham Clock's revenue trajectory
Forecast revenue from snapshot history. Last 1 months.
Where Ham Clock sits in Tools
Revenue distribution of 77129 comparable apps. Ham Clock highlighted.
Ham Clock vs comparable apps
Revenue trajectory side-by-side. Bold = Ham Clock, ghosted = peers.
App spec
Version
Varies with device
Last update
Jun 10, 2025
Launched
Dec 19, 2015
Price
Free
Monetization
Free
What Ham Clock actually does (from store listing)
HamClock is targeted for portable amateur radio operators.
It displays time/date and user notes related to various portable locations on a single screen:
- Local date / time
- GMT date / time
- User notes
- Reminder to transmit callsign every 10 minutes, as required in some countries.
Note can be entered in up to four fields. Use it to record location name, QTH locator, callsign, activation details for SOTA, WCA, WFF or other activities, event info etc.
Multiple notes can be entered …
HamClock is targeted for portable amateur radio operators.
It displays time/date and user notes related to various portable locations on a single screen:
- Local date / time
- GMT date / time
- User notes
- Reminder to transmit callsign every 10 minutes, as required in some countries.
Note can be entered in up to four fields. Use it to record location name, QTH locator, callsign, activation details for SOTA, WCA, WFF or other activities, event info etc.
Multiple notes can be entered and saved for later use.
Note view is scrolled to show longer texts
Hide local clock, leaving even more room for notes
- Large font and contrast for readability in bright daylight
- Light / dark color scheme
- Configurable date and time format, including seconds
- Configurable display timeout
- Optional popup every 10 minutes to remind you to transmit your callsign
- Optional notification played along with the visual reminder
- Share note content as a simple text file, formatted as JSONArray (string). Extension is .hctxt (HamClockTxt) but can be edited in any text editor.
Sharing works best via Gmail or GoogleDrive. With Gmail, open/receive directly from an attachment (no need to download the attachment first). If proper JSONArray file format is detected, "save or discard note" is offered.
Sharing via Bluetooth is less reliable on different devices, because android versions and phone vendors vary in trusted file types for BT transfers, and in permissions needed to access bluetooth storage space (received files).
Sharing via other applications is not tested, and it may or may not work.
PRIVACY / DISCLAIMER
This app does not collect any personal data or share anything with anyone.
There are NO ads.
Comparable Android apps
The five apps in Tools with the closest revenue to Ham Clock. Click any to see its detail page.
Each forecast combines App Store rating, ratings count, monetisation model, pricing tier, IAP signals and ad-supported flag.
The base estimate is then multiplied by a per-category scaling factor learned from apps with founder-verified MRR.
Every number on this page comes from public APIs and bumetric's own snapshot history.
Full methodology covers input variables, accuracy bands per category and how we treat apps without comparable anchors.
See also the live data on Ham Clock's tracker page for current rating, reviews and snapshot timeline.
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