Currency Converter Plus 與 Pool Math by TFP 使用情況與統計

Simple currency converter and exchange rates calculator for up to 15 currencies at once! We've seen it all - various currency converters, exchange rates lists with charts and historic data. But who need all that fancy stuff, when you simply need to find out on holiday how much does that thing cost, right? This app will do exactly what you'd expect of it during the vacation in some country. It's main advantage is that you can choose up to 15 currencies that are visible on mainscreen. Conversion will take place right away - just as you start to type the numbers. Do you wish to do some math with the numbers? No problem - use built-in calculator. Result will be automaticaly converted to all currencies. Can't find your currency? Just add it as a new currency code and simply run update. App will download it's name and fresh exchange rate. From now on it will always auto-update. Main features of this currency converter are: - nice graphics, also suited for tablets and android wear. - ease of use - convert up to 15 currencies at once! - offline usage - roaming prices are no longer a problem now - all the exchange rates are cached! - filter of currencies - just press search in list - various preferences that allows you to change all the small things - online update is provided via European central bank, Additional sources, RSS feeds or you can manually add any custom currency

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Pool Math by TFP

PoolMath makes swimming pool care, maintenance and management easy by tracking chlorine, pH, alkalinity and other levels to help calculate how much salt, bleach and other chemicals to add. Keep swimming in your TroubleFreePool with Pool Math. Crystal clear algae free pool water is what Trouble Free Pool Math is committed to. Pool Math performs all the calculations you need to keep your chlorine, pH, calcium, alkalinity, and stabilizer levels balanced. Why choose Pool Math over the others? Other apps claim to make testing easy by using test strips and your phone's camera. Unfortunately, this is simply too good to be true. Test strips are notoriously inaccurate and end up costing you much more money in both chemicals and the tests themselves in the long run. Trouble Free Pool believes using a proper test kit is much easier, effective, and economical in the long run. By following these calculations the pool owner achieves and maintains crystal clear water without reliance on the often unproductive advice and unneeded expense from pool stores. Pool Math's great features include: • Calculators for pH, Free Chlorine, Calcium Hardness, Salt, Total Alkalinity, Calcium Hardness, Borates, CSI • Track Maintenance: Backwashing, Vacuuming, Filter Cleaning, Filter Pressure, SWG Cell %, Flow Rate • Track Chemical Additions • Bleach Price Calculator - Find the best deals on bleach easily • Summary page with test and chemical log insights and totals • Data backup / Export Premium Subscribers get access to these additional features: • Unlimited Test Log History Storage • Maintenance Reminders • Cloud Sync/Backup • Sync across multiple devices • Unlimited Pool / Spa Configurations • Test Log CSV Import / Export