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Simple Calculator (tasser gyati) recently hit its all-time peak of #13 on the App Store Top Free chart on 2026-07-23, which also matches its 30-day best. However, the app is now clearly cooling off: its 30-day average is #29, but current positions have slipped well below that, ranging from #37 in Mali (the strongest current market) to #99 in Denmark. Notable drops in the latest update include Benin falling 21 spots to #48 and Norway sliding 10 places to #67, while Gabon (#91) sits just inside the chart cutoff. Overall trajectory: the app surged to its peak very recently and is now declining across all five tracked markets.