Your build failed due to an error in the Apkbuilder stage. Problem

[Still-learning (1-2-3-4...)]

You can try TinyTimer extension , no libraries used (if it is possible)

[Free] Tinytimer app (May be unhackable, but not sure) & Tinytimer Extension V2(Updated)

V2 added with Ontick ,Onfinish block, CancelTimer, GetCountdownValue and Start Timer have been added [image] extension link : Summary AIA: Countdown_GSR_V2.aia (105.3 KB) see the below screenshots: [Screenshot_2022-04-29-18-44-49-56] [Screenshot_2022-04-29-18-45-43-95] If timer over or no timer set mean screen will be green in colour. Once timer started you cannot click that Start button. [Screenshot_2022-04-29-19-48-05-85] (So for from my side, I find no bugs. May be I am unnoticed. …