KetaKeta vs bcRPN
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KetaKeta
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KetaKeta is a simple multiple length arithmetic calculator with Flat UI. Features - Swipe left or right on screen to switch the themes. KetaKeta shipped with 6 color themes - Swipe down on screen to copy the displaying number to the pasteboard - Swipd up on screen to copy the number from the pasteboard - You can open this app by ketaketa: URL scheme
bcRPN
This utility app functions as a Reverse Polish Notation calculator. It handles complex numbers and utilizes extended precision for all calculations, offering an unlimited stack depth and an undo feature for up to 10 operations.
- Reverse Polish Notation (RPN) input
- Complex number calculations
- Extended precision math
- Unlimited stack depth
- Undo functionality (up to 10 operations)
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This is a RPN (Reverse Polish Notation) Calculator. It supports complex numbers and uses extended precision math for all operations. The stack depth is unlimited. In case a mistake was made, up to 10 operations can be undone. RPN calculators work by entering the numbers on the stack first, then selecting the operation. For example to add 3 + 4, press: 3 Enter 4 +
Screenshots
Verdict
KetaKeta and bcRPN are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
KetaKeta ships an update every 34 months, bcRPN every 22 months. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.
| Parameter | KetaKeta | bcRPN |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (8 ratings) — better |
| Positive reviews | — | 80.0% of reviews |
| Number of ratings | — | 8 — better |
| Update frequency | Every 34 months | Every 22 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Masanori Mikawa | Paul Wilkins |
In-app purchases
KetaKeta
No in-app purchases
bcRPN
No in-app purchases
