Cal­cu­la­tor app + Tap­bots = …

Mac Format - - RATED - $4.99 (about £2.99) De­vel­oper Tap­bots, tap­ OS X 10.10 or later 64-bit Mac

This cal­cu­la­tor/ unit con­verter fo­cuses on de­sign and us­abil­ity. It boasts a ba­sic and sci­en­tific mode, but sub­tly re­thinks con­ver­sions and the his­tory tape. The for­mer can ex­ist as a row above the main dis­play, and you can con­fig­ure which units are in­cluded; click the con­ver­sion to see a popup with fur­ther cal­cu­la­tions. The tape re­places a mem­ory but­ton with favourites, which en­able you to later work with a re­sult or the ex­pres­sion that com­posed it.

The app looks good, di­al­ing down trans­parency com­pared to Ap­ple’s hor­ri­ble OS X Yosemite Cal­cu­la­tor, although some but­ton text is grainy on non-Retina dis­plays. We also liked the ex­pres­sion view, show­ing what you’ve typed be­fore hit­ting ‘equals’, but it’s a pity you can’t edit any­thing from the path in a man­ner sim­i­lar to Soul­ver. Still, Cal­cbot is a plea­sure to use and comes rec­om­mended. Craig Gran­nell

Sand­wiched be­tween Ap­ple’s free Cal­cu­la­tor and PCalc, but much bet­ter than the for­mer.

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