Bucephalas Ephemeral11.6.0 - App Store

+ Limitation of this App 'Ephemeral'
This app is a limited-functionality version of 'Bucephalas'.
(1) Your journey to go around Knots is recorded in the same manner as the full version, but only those unknotted within 24 hours are shown on the map.
(2) Travel Logs in the Dispelling Mode are recorded only for the first nine fog clusters.
(3) You can chase a Mirage until its grows to Level 10.
(4) A geoglyph draft mode of the rectangular footprints is not available.

Bucephalas Tabula rasa is a free version of this app. You can experience the features of the full version in a real ride using Tabula rasa.

+ Features as a Cycle Computer App
　Bucephalas Ephemeral is designed on an assumption that a user's primary transportation device is a bicycle. Therefore, this app has basic features as a cycle computer app.
. A quasi-realtime slope meter using a barometer.
. Auto recording of local minima of slopes.
. Elevation gain, max elevation gain, cumulative elevation gain by using a GPS altimeter or a barometer.
. Heading estimation thad does not use magnetic compass whenever possible.
. Voice navigation to a destination.
. Indicates the direction of a destination by using 3D sounds (stereo sounds).
. Adaptive control of GPS activity depending on the battery level (full-blast mode, high-accuracy mode, power-saving mode, starvation mode, and nirvana mode).
. Effective speed; an original speed statistic based on a medial speed instead of a mean.
. Location bookmark.
. Realtime speed meter.
. Max speed indicator.
. Travel distance since the launch of the app.
. Odometer.
. The altitude and barometer.
. Auto-recording of a travel path.

+ Purpose of Unknotting
Imagine that someone has drawn a large number of latitudinal and longitudinal lines on the earth. These lines are separated by 1/60 degrees, or 1 minute. The intersections of these lines are called KNOTs.
Your mission is to unknot as many knots as possible.

+ How do you unknot a Knot?
You can unknot a knot by simply approaching within a radius of 50 m of a knot.

+ Gordian Knots
Most knots have fractions in their coordinates. For example, the latitude and longitude of the knot close to Apple Inc. are (+37.33333, -122.03333). However, the coordinates of some knots do not have fractions. Such knots are called Gordian Knots. The Gordian Knot closest to Apple Inc. lies at (+37.00000, -122.00000). Gordian Knots are unknotted in the same manner as ordinary knots.

+ Play Carefully
How many knots can you unknot? However, it should be noted that approaching some knots could be dangerous. So, play this game carefully at your own risk.

+ IMPORTANT
This App uses GPS in the background. Continued use of GPS running in the background can dramatically decrease battery life.

+ Health Management
This App estimates the magnitude of your physical activity and shows it as METs.Hour (a product of Metabolic Equivalents of tasks and activity duration in hour). The estimated physical activity magnitude can be converted into calories burned. In doing so, this app needs your body mass data and has to communicate with Health App to obtain the data.
Also, this app can export the physical activity recorded in this app to Health app.

Version History Minor fixes to support iOS27. 11.6.0 Sep 13 To ensure that the concept of this app can continue to be operated safely and sustainably, we have decided to discontinue the leaderboard feature that ranked users by the number of intersections they reached.

Some latitude and longitude intersections are located in potentially dangerous areas or places that should not be entered. This decision was made with the highest priority on user safety and respect for landowners and property managers.

Going forward, rather than encouraging competition with other users, we will continue to develop the app as a place to quietly enjoy your own journey and movement history, with a greater focus on personal tracking and record-keeping. 11.5.0 Jul 21 (1) A one-time bonus of 100 Radius Expansion Points will be granted, including to existing users.
(2) When clearing rectangular footprints in Geoglyph Mode, only the footprints created during the current session will be removed. 11.3.0 Jun 9 (1) Strava integration is no longer available.
(2) Tapping a URL in the memo field of a location bookmark now opens it in the browser.
(3) A confirmation alert is now displayed before Dispel Mode starts. 11.2.14 Jun 3 Fixed a bug where Safe Ride Mode did not terminate correctly. 11.2.13 May 21 Fixed an issue where estimated travel times were not correctly updated when switching bicycles, ensuring that each bicycle’s speed settings are properly reflected in the calculation. 11.2.11 May 16 (1) Simplified tutorial.
(2) Miscellaneous minor improvements. 11.2.10 May 12 Minor fixes. 11.2.9 Apr 28 Fixed a bug that caused a crash in the session summary view when temperature data was missing. 11.2.7 Apr 2 (1) Fixed a bug that caused a crash during the tutorial.
(2) Fixed a bug that caused a crash when using the destination proposer.
(3) Fixed a bug in the “second full moon this month” detection. 11.2.6 Mar 18 Minor fixes. 11.2.5 Jan 26 Fixed an issue where notifications repeatedly requested an immediate transition to the foreground. 11.2.4 12/29/2025 Fixed an issue where the app froze when requesting a review. 11.2.3 11/08/2025 Fixed an issue with cloud cover reporting. 11.2.2 11/06/2025 Fixes to support iOS26. 11.2.0 09/13/2025 (1) Fixed a bug related to the number of digits displayed for air temperature and apparent temperature. 11.1.6 01/31/2025 (1) When moving at high speed, such as in an airplane, the coordinate interpolation may untie the knot.
(2) Fixed a bug in which the voice pitch and reading speed settings were not reflected in some synthesized voices.
(3) Fixed a problem that the mechanism to save bicycle information causes a crash. 11.1.5 09/24/2024 (1) Adjusted the route guidance algorithm when touring a course.
(2) Weather information reported at startup now includes cloud cover and UV index. 11.1.4 08/04/2024 (1) The share button turns orange for sessions that have uploaded activities to Strava.
(2) It is now possible to add notes to bike parts management information.
(3) Fixed a bug that prevented changes to vehicle movement recognition suppression settings from being saved correctly.
(4) Adjusted the reporting timing when changing course in the direction of the sun or moon. 11.1.2 06/23/2024 Fixed a bug that caused failure to log in to Strava. 11.1.1 06/09/2024 Activity records can be uploaded to Strava. 11.1.0 06/08/2024 [1: GPX file export] When exporting a movement trace as a GPX file, time elapsed, elevation, and speed information can be included.

[2: Long-press UI can also be used with a flick of the mouse] The presentation of the current location, the immediate execution of route guidance, and the display of the heading calibration menu can now be used with flicking corresponding buttons as well as long-pressing.

[3: Fixed bugs] Fixed a bug related to the reporting of the difference in altitude between the current location and the destination. 11.0.4 05/21/2024 (1) A confirmation alert will appear when deleting registered information of a bike.
(2) Fixed a bug that the grid that defines Knots is not displayed when the map is tilted in the depth direction.
(3) Adjustment of English expressions. 11.0.3 05/16/2024 [1: Excluded visibility] Visibility has been excluded from the weather information reported.

[2: Other tweaks] Other tweaks
•Fixed a bug regarding the name of the setting moon.
•Introduced a mechanism to monitor velocity anomalies. 11.0.2 04/25/2024 【1: Pressing and holding the GPS On/Off button】
When the GPS is turned off, pressing and holding the GPS On/Off button will temporarily turn on the GPS and display the current location. If this is not possible, the last recorded location will be displayed. (Previously, only the latter process was used)

【2:Course distance】
Course distance can now be displayed.

【3:Coordinates bookmark】
You can now choose to automatically enter a category name as the name of a new bookmark when it is generated. The response when sorting bookmarks has also been adjusted.

【4: Settings related to heading estimation】
The settings for heading estimation and map matching have been integrated into the calibration menu that appears when the tracking mode button is long-pressed. 11.0.1 04/14/2024