Comparison

SlipStick vs Kenbak

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Virtual slide rule reproduction
  • Multiplication and division
  • Logarithm calculations
  • Trigonometry calculations
  • Classic engineering tool
Features
Read full description

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.

About

Kenbak

Features
Read full description

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

SlipStick4 screens
Kenbak3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Kenbak is free to download; SlipStick costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SlipStick ships an update weekly, Kenbak monthly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 6 level
SlipStick versus Kenbak: the parameters behind the verdict, then further details
ParameterSlipStickKenbak
Price$0.99Free — better
Rating4.6 (9 ratings) — better—
Positive reviews83.3% of reviews—
Number of ratings9 — better—
Update frequencyWeekly — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better17.0
Further details — not scored
Size1 MB26 MB
Age rating4+4+
DeveloperSteve GlennerTakhir Zakirov

In-app purchases

None

SlipStick

No in-app purchases

None

Kenbak

No in-app purchases

Questions

Is SlipStick free?
SlipStick costs $0.99, with no in-app purchases.
Is Kenbak free?
Kenbak is free to download, with no in-app purchases.
Do SlipStick or Kenbak have ads?
Neither SlipStick nor Kenbak shows ads.
Which is updated more often, SlipStick or Kenbak?
SlipStick ships an update weekly, and Kenbak monthly. Most recently, SlipStick was updated on November 3, 2026 and Kenbak on November 5, 2026.

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