RPN-65 SD
CuVee Software
Getting the latest details from the App Store…
CuVee Software
Getting the latest details from the App Store…
World's first pocket computer! Now running on your iPhone. RPN-65 SD is the iPhone version of RPN-65 Pro, the first complete simulation of Hewlett-Packard's stunning HP-65 programmable calculator for iOS. Produced from 1974 to 1977 at an initial price of $795 (that's close to $5,000 today!), the HP-65 was a breakthrough. Not only was it programmable, it also contained a motorized magnetic card reader - and still fit into Bill Hewlett's shirt pocket. Experience this revolutionary calculator on
Top of Paid · Productivity in United States. RPN-65 SD is #99 there. Changes are over 7 days.
How the app presents itself on the App Store. Select a screenshot to open it full size.
Version 4.4.1 · 8 Mar 2026 · 7 months ago
After tapping “Don't Show Again,” the button will be hidden instead of appearing greyed out.
Every chart this app is in right now, best position first.
| Chart | Rank | 24 h | 7 days | Best | Days on chart |
|---|---|---|---|---|---|
Higher on the chart is better: #1 is at the top.
Their other apps that Appulse has seen in the charts, charting ones first.
| App | Best rank now | Released | App Store |
|---|---|---|---|
 RPN-55 SDProductivity | Paid · ProductivityUnited States#84 |
| #99 |
| New entry |
| Change unknown |
| #99 |
| 1 |
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United States · Paid · Productivity: best #99, latest #99, over 7 snapshots since 8 Oct. No snapshots from 8 Oct to 9 Oct, on 9 Oct, on 10 Oct, and on 11 Oct; the line joins the snapshots on either side.
Entries, big moves, #1s and new versions we've recorded.
 RPN-25 CEUtilities | Not charting | 6 years ago |
