How Stamina Systems Work
Most mobile games gate play sessions with stamina, energy, or AP. The recovery rate varies by title: Genshin Impact regenerates 1 every 8 minutes, Arknights every 6, and uma-style games can be as slow as 30 minutes per point. The basic formula is (max - current) x minutes per 1 stamina, so 30/160 at 8 minutes per point takes about 17 hours and 20 minutes to refill.
Planning Your Day Around Refills
Knowing your exact cap time prevents wasted regen, which kicks in only while stamina is below max. If you sleep or work for 8+ hours, check that the refill cap does not land inside that window - if it does, spend a chunk of stamina before stepping away. For games with daily-mission heavy stamina costs, splitting your sessions into morning, lunch, and evening blocks is the safest plan.
When to Use Refresh Items
Premium currency and refresh items grant instant top-ups, often 60-120 stamina. The cost-per-action is rarely worth it on normal days; reserve them for double-drop or event windows when your stamina yields the most progress.
FAQ
Some games shorten recovery as your account level rises. Use the current effective minutes-per-point value.
Yes for most games. A few reset at daily server resets, so check your title's rules.
Some games allow temporary overflow. This tool models passive recovery only and ignores overflow storage.