Upgrade your free basic calculator!  'Print Calculator' includes 100 lines of paper tape history for review & edit of prior calculations. Perfect for everyday use, office tasks, and much more.  Print the paper tape history or export it to iBooks®, DropBox®, Email or Printer (see the FAQs). Save & retrieve important paper tape history as files for later use. Also, review & edit numbers, add or delete lines and place comments on any line. The iPad version features a full sized (1:1) keypad with TypeTone, a unique audio aid to help guide your finger back to the center of a key. This free download has limited lines of paper tape history, limited disk storage, and banner ads. Use one simple In-App Purchase for more lines of paper tape, storage files, and the removal of banner ads. ========== CPA's and Accountants: Please find 'Adding Machine 10 Key Universal' by Richard Silverman in the App Store which is a 10-key compliant adding machine with reverse numeric/operator entry like Casio, sharp or Canon. Business Owners: Please find ‘Accountant Calc Pro by Richard Silverman in the App Store with more lines of paper tape and Tax+ / Tax- keys for point-of-sale receipts in storefronts or small businesses. ========== About Print Calculator: ======== . Universal App for both iPhone and iPad . Freely chain + - x / % 1/x √ . Export a PDF file to the iBooks® app, Dropbox(c), Email, or your favorite printing utility. . Add comments . Add, delete and modify lines and recompute results automatically. . 100 lines of paper tape history (upgraded version) . Undo / Redo . Save and Rename paper tapes to disk for later use . 3 display formats: fixed, fix+, float . Comprehensive set of help screens. . Realistic keypad sounds iPad Features: ======== . TypeTone(c) - a major innovation to aid accurate key entry using audio feedback. . Full size (1:1) realistic keyboard. . 4 Orientations . Lock keypad for left or right handed use iPhone Features: ======== . Choose from 4x5 or 4x6 keypads . Select from 4 background colors . Set a paper tape font size ========== FAQ's Q1. Tell me about Email, Printing, and Exporting a Paper Tape. A1. From the Export dialog, select from: Email, Print, Copy or Open-In. Email includes a pdf attachment. Print requires an AirPrint capable printer. Open-In will cause a menu of 3rd party Apps to appear that can receive a hardcopy of your paper tape; for example, iBooks, DropBox, and 3rd party printer Apps for Brother, HP, Epson, Canon and more. Q2. Can I touch-type? A2. The iPad version has several aids for touch-typing: TypeTone variable audio feedback, 1:1 scale keyboard, or, scale and reposition the keyboard to fit your hand best. There is also support for right and left-handers. Q3. How do I edit an incorrect number or add & delete lines from the paper tape? A3. Touch any line of the paper tape to go into edit mode. Touch the side controls: Add Line, Delete Line. You can also edit numbers, and split groups. Press Done to return to Calculator mode. ====================== IN-APP PURCHASE: . Free download has a limited number of lines of paper tape . Upgrade for 100 lines of paper tape history, more file storage, & no ads IN-APP PURCHASE DETAILS . Payment will be charged to your iTunes account at confirmation of purchase. TERMS AND CONDITIONS Your use of this application is governed by Interlocken Technology's Terms of Use (http://s354819480.onlinehome.us/InterlockenPrivacyPolicy/Interlocken%20Technology%20Privacy%20Policy.pdf) and Privacy Policy (http://s354819480.onlinehome.us/InterlockenPrivacyPolicy/InterlockenTechnologyTermsOfUse.pdf)