Comparison

Zeitmaschine vs Agonizer

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

Agonizer

This app is a monophonic synthesizer focused on bass sounds, developed with a synth bass expert. It features dual wavetable oscillators, a mangle section, and built-in stereo effects. It supports MPE controllers and various audio/MIDI connectivity options for standalone or app-to-app use.

Highlights
  • Monophonic synth engine for bass
  • Dual wavetable oscillators
  • Built-in stereo effects
  • MPE controller support
  • Standalone and AUv3 operation
  • 140+ factory presets
Features
Currently charting
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Agonizer is a monophonic synthesizer designed in collaboration with YouTuber and synth bass expert Jakob Haq of haQ attaQ Overview: * Monophonic Synth Engine with focus on Bass * Built-in stereo effects * 140+ fine tuned factory presets designed by Jakob Haq * Supports ROLI Seaboard and other MPE controllers out of the box * Standalone operation with support for USB audio interfaces, wired, network & bluetooth MIDI * Audio Unit v3 Extension * Inter App Audio support * Audiobus support * Ableton Link Synth Voice: * Dual Wavetable Oscillators with 40+ Wavetables, Morphing & X-Mod * Dedicated sub osc & noise source * Mangle Section with pre-filter Drive, Bitcrush, Lift and Push controls * VA Ladder filter * Wobulator (Highly tweak-able Sequenced LFO) * LFO with Key and BPM Sync * Variable Slope AD & ADSR Envelopes * Tube based master drive Effects: * 2x stereo effect units * Vintage Chorus * Digital Delay Presets: * Factory bank including 140+ presets designed by Jakob Haq * Preset Management with Templates & Categories * Shared User Presets between Standalone and AUv3 versions * Preset Export & Import Connectivity: * Standalone * AUv3 Instrument * Inter-App Audio Instrument * Audiobus Instrument Requirements: * iOS12+ * iPad Air 2 or newer

Screenshots

Zeitmaschine4 screens
Agonizer4 screens

Verdict

The call

The clearest difference is in-app purchases: Zeitmaschine at none against Agonizer's 3. Zeitmaschine also leads on price ($3.99 vs $7.99). Agonizer's advantage is chart position (#194 vs unranked) and iOS requirement (11.0 vs 15.0). On update cadence, ads and device support 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 Agonizer $7.99 up front. Agonizer sells 3 one-off in-app purchases. Zeitmaschine asks for nothing beyond the download.

UpkeepUpdate frequency

Zeitmaschine ships an update every 7 months, Agonizer every 5 months. Both last shipped on October 29, 2026.

Scorecard4 real differences · 7 level
Zeitmaschine versus Agonizer: the parameters behind the verdict, then further details
ParameterZeitmaschineAgonizer
Price$3.99 — better$7.99
Rating—4.8 (203 ratings) — better
Positive reviews—78.0% of reviews
Number of ratings—203 — better
Update frequencyEvery 7 monthsEvery 5 months — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
Best chart rank—#194 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.011.0 — better
Further details — not scored
Size152 MB362 MB
Age rating4+4+
DeveloperGrohe & Giannakakis Applications GbRKai Aras

Bugs and requests

Zeitmaschine

Not enough reviews yet to summarise bugs or requests.

Agonizer

Reported bugs

16 issues
  • Keyboard does not properly handle legato/mono-synth note priority
  • Crashes in Audiobus, AUM, and Cubasis host applications
  • No sound output when used as AUv3 plugin in hosts
  • No sound in GarageBand integration
  • App freezes on splash screen with iOS 18.3
Show 11 more
  • Stuck notes and failed note triggering
  • Scream button malfunction when switching presets
  • Cutoff knob lag in AUv3 scenarios
  • UI jitter and text cutoff on iPhone
  • Favorite preset feature not working on iPhone
  • Program change not working properly in hosts
  • Always opens with init preset in host applications
  • Modulation matrix sensitivity too high (2% movement = large range)
  • Audio output peaks in red with no sound
  • Permanent clipping/damaged audio output
  • Misleading IAP pricing display (showing 'FREE' for paid content)

Requested features

10 requests
  • Polyphony mode or toggle between mono and poly
  • Envelope drawing capability instead of preset selection
  • Menu-based waveform selection instead of cycling
  • Arpeggiator function
  • Preset browser search and favorites filter
Show 5 more
  • Extended automation control for all knobs
  • Keytracking for filter
  • Reverb effect
  • Accelerometer/gyroscopic velocity sensitivity
  • Customizable number of keyboard keys

In-app purchases

None

Zeitmaschine

No in-app purchases

3 purchases

Agonizer

One-time3
  • Neon Nightmare Pack$1.99
  • Chrome Oasis Pack$1.99
  • Circuit Bender Pack$1.99

Questions

Is Zeitmaschine free?
Zeitmaschine costs $3.99, with no in-app purchases.
Is Agonizer free?
Agonizer costs $7.99, and also offers in-app purchases.
Do Zeitmaschine or Agonizer have ads?
Neither Zeitmaschine nor Agonizer shows ads.
Which is updated more often, Zeitmaschine or Agonizer?
Zeitmaschine ships an update every 7 months, and Agonizer every 5 months. Most recently, Zeitmaschine was updated on October 29, 2026 and Agonizer on October 29, 2026.

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