- Normal unlock at Sphere Level 24.
- Hard unlock at Sphere Level 14.
- Expert unlock at Sphere Level 25.
- Spherical can not be unlocked permanently. To temporarily reveal it in the song list:
- Wait until (or set the device's system time to) April 1st, between 12am and 11:59pm.
- Enter Solarsphere from the episode selection menu.
- From version 1.1.3 to 1.3.1, Linear Accelerator (Expert) was the highest rated chart in Tone Sphere.
- It is the first song to have an Expert chart rating of 12; however, it was rated as 11.5 in its debut until ver 1.2.2.
- All three charts have a single hold that will artificially increase your combo by a few hundred; hitting it earlier or later will cause your combo to vary (explaining the different combos held by people on the leaderboards with fullcombos). It does not affect scoring.
- In the leaderboard, the Spherical chart's artist is listed as "#LineAcc Tomato the Space Monster", and the song name as "Incident in the Tomatomart".