Comparison

Zeitmaschine vs mKer

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

Head to head
About

Zeitmaschine

Features
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Zeitmaschine is an audio engineering calculator with 4 different modes to compute tempo and distance related delay times, convert time related values and to calculate file sizes. DELAY TIME MODE Zeitmaschine is a delay time calculator with all divisors and multipliers relative to the time measurement you have done. Calculate delay times in milliseconds (ms) and beats per minute (bpm). Set the desired tempo via the tab-button, or write it down in ms/bpm, all options will be computed and a huge amount of 21 matched delay times will shown up at once, including dotted and triplet values. Take these determined times and put it to the delay time display of your effect or sound device, use it to set the right attack and release times of your dynamics (compressor/gate) or set the perfect pre delay time of your reverbs in addiction to the song tempo. Works with virtual-, 19“-, or stage devices (display needed). Zeitmaschine is a pretty quick app, brilliant for live engineering, where you can choose the perfect delay time in seconds, without scrolling the knobs of your FX-device back and forth. On the other hand you got an ultimate overview of alternative delay times, that´s great for doing experiments while mixing a track in a recording studio or in your DAW. You can use it on drums, vocals, guitars, ….you name it, and give them a complete new rhythmical structure. CONVERTER MODE Convert beats per minute to milliseconds, samples & hertz, depending on the audio sample rate. FILESIZE MODE Set the duration, bit depth, sample rate and channel number and get the filesize information for uncompressed files. Add the kbps rate to get the filesize for compressed files. DELAY LINE MODE Set the distance to main P.A. in meter or feet, add the temperature in Celsius or Fahrenheit and get the right delay times to delay the main P.A. to the backline and the line P.A. to the main P.A.

About

mKer

A versatile MIDI step sequencer designed for music creation. It offers multiple outputs, extensive pattern and lane customization, and advanced step editing. Best used within an AUv3 host app for sound generation.

Highlights
  • 8 MIDI outputs
  • 64 Patterns with 16 Lanes each
  • Customizable Steps and Step Size per Lane
  • Advanced Step Parameters (Pitch, Velocity, Probability, etc.)
  • Flexible Editor with Step Entry Keyboard
  • 32 Clips with Repeat Functionality
  • Performance Tab with Assignable Sliders and Morphing
Features
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*** Note *** Although mKer can run as a stand-alone app, the recommended way to use it is as an AUv3 plugin from inside a suitable AU Host app that supports MIDI Processors such as AUM, Audiobus, Cubasis etc. Please also note that mKer is a MIDI app/plugin. That means that it does not produce sound itself - it needs to be connected to an audio source that can receive MIDI. mKer is a versatile, multi-output MIDI step sequencer with an extensive range of features. These include: - 8 MIDI outputs - 64 Patterns - 16 Lanes (aka tracks) per Pattern - Independent number of Steps (1-32) and Step Size (1/64-256 beats) per Lane per Pattern - Every step can play either a single note, an interval (2 notes) or a chord (3 or 4 notes) - Lane Step parameters: Play Cycles, Skip Cycles, Play Offset Cycles, Pitch, Velocity, Probability, Offset (can be used for ‘swing’ like effects), Repeat (rachet) and Gate - A flexible Editor that includes a step entry keyboard, parameter sliders and a variety of options and utilities designed for to make the workflow intuitive and fast - 32 Clips with 1-8 Steps per Clip, 1-128 repeats per step (every clip step has one pattern) - 3 Play Modes: Pattern, Clip, Sequence (all Clips) - A Performance tab with 10 fully assignable MIDI sliders, a 12-snapshot bank and morphing function between the snapshots... - MIDI step input and real-time recording - 12-track beat generator with six genres, density, intensity and GM beat mapping ... and more!

Screenshots

Zeitmaschine4 screens

Verdict

The call

The clearest difference is update cadence: mKer at every 3 weeks against Zeitmaschine's every 7 months. mKer also leads on iOS requirement (13.0 vs 15.0). Zeitmaschine's advantage is device support (3 vs 1). On price, 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

Zeitmaschine costs $3.99 and mKer $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Zeitmaschine ships an update every 7 months, mKer every 3 weeks. The most recent releases landed on October 29, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 7 level
Zeitmaschine versus mKer: the parameters behind the verdict, then further details
ParameterZeitmaschinemKer
Price$3.99$3.99
Rating—4.5 (22 ratings) — better
Positive reviews—63.6% of reviews
Number of ratings—22 — better
Update frequencyEvery 7 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS15.013.0 — better
Further details — not scored
Size152 MB57 MB
Age rating4+4+
DeveloperGrohe & Giannakakis Applications GbRAxart Labs OU

In-app purchases

None

Zeitmaschine

No in-app purchases

None

mKer

No in-app purchases

Questions

Is Zeitmaschine free?
Zeitmaschine costs $3.99, with no in-app purchases.
Is mKer free?
mKer costs $3.99, with no in-app purchases.
Do Zeitmaschine or mKer have ads?
Neither Zeitmaschine nor mKer shows ads.
Which is updated more often, Zeitmaschine or mKer?
Zeitmaschine ships an update every 7 months, and mKer every 3 weeks. Most recently, Zeitmaschine was updated on October 29, 2026 and mKer on November 3, 2026.

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