SlipStick vs Kenbak
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SlipStick
This app is a fully functional digital reproduction of a classic engineering slide rule. It allows users to perform complex calculations like multiplication, division, logarithms, and trigonometry, just like the original manual tool.
- Virtual slide rule reproduction
- Multiplication and division
- Logarithm calculations
- Trigonometry calculations
- Classic engineering tool
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A reproduction of a classic engineering tool - the slide rule. This fully functional manual calculating device was the engineer and math student's means of quickly solving multiplication, division, logarithm and trigonometry calculations until the invention and wide spread use of electronic calculators.
Kenbak
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Discover the history of computing with the Kenbak-1 Emulator! This emulator is not just a copy, but a carefully recreated digital version of the Kenbak-1, one of the first personal computers, released in 1971. Key Features: • Full Processor Emulation: Authentic emulation of all original Kenbak-1 instructions. • Interactive Front Panel: Replica of the control panel with working switches and LEDs. • Easy-to-use command input panel: Allows you to choose the specific processor instruction from the command panel and immediately store it in memory. • Memory Dump: Visual display of the contents of each memory location for debugging and analysis. • Save and Load Programs: Create, save, and load your own programs written for the Kenbak-1. • Documentation: Complete set of original Kenbak-1 documentation. • Settings: Option to adjust emulation speed and other parameters. The Kenbak-1 Emulator is the perfect tool for learning the fundamentals of computing, experimenting with machine code, and delving into computer history. It's a great way to understand how the first computers worked and how the foundations of the modern digital revolution were laid.
Screenshots
Verdict
The clearest difference is price: Kenbak at Free against SlipStick's $0.99. SlipStick's advantage is update cadence (weekly vs monthly) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Kenbak is free to download; SlipStick costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SlipStick ships an update weekly, Kenbak monthly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | SlipStick | Kenbak |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.6 (9 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Weekly — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Steve Glenner | Takhir Zakirov |
In-app purchases
SlipStick
No in-app purchases
Kenbak
No in-app purchases








