Comparison

Undae vs MNTRP

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

Head to head
About

Undae

This app recreates the sound of vintage optical vibrato and chorus effects for iOS and Mac. It offers customizable filter sweeps, speed control, and stereo spreading for unique audio textures. It can be used as a standalone effect or as an AUv3 plugin in music production apps.

Highlights
  • Optical vibe and vibrato emulation
  • Customizable filter stagger
  • Chorus and vibrato modes
  • Adjustable lamp shape and sweep center
  • Tempo sync and stereo spreading
  • AUv3 plugin support
  • Standalone operation with audio import
Features
Read full description

Undae is an optical vibe, the watery and vocal swirl of the late sixties photocell units, rebuilt for iPhone, iPad and Mac. A single slow lamp sweeps a chain of staggered filters, so the notches roll through your tone unevenly instead of moving in a straight line. That stagger is what makes a vibe sound like a vibe and not a phaser. Chorus mode blends the sweep against your dry signal for the classic swirl. Vibrato mode drops the dry signal for a pure, seasick pitch wobble. Voice it to taste. Choose 2, 4, 6 or 8 stages, morph the lamp from a smooth sine to a lopsided ramp, move the sweep centre darker or brighter, and add a touch of feedback for a throatier, more vocal sweep. Set the speed by hand or lock the lamp to your project tempo. Spread it across the stereo field for a rotary style swirl, tilt the tone, then set mix and level. Twelve factory presets get you going, from Classic Chorus and Rotary Wide to Jet Phaser and Seasick, and you can save your own. Use it as an AUv3 audio effect in GarageBand, AUM, Loopy Pro, Cubasis, Logic and other hosts, with host presets, parameter automation and full session state. Or run it standalone with the built in demo bed, your microphone, or a song from your library, and export the processed result. Undae collects nothing. No accounts, no tracking, no analytics, no ads. All audio is processed on your device and is never recorded or uploaded.

About

MNTRP

Explore a unique soundscape by controlling a spaceship's journey through space. Its position on a figure-8 trajectory dictates the ambient drone sound, with distinct synthesis engines for each stage of the voyage. Automate sound parameters and experience immersive 3D visuals.

Highlights
  • Spatial sound control via spaceship trajectory
  • Five distinct synthesis stages
  • Continuous sound morphing
  • Manual and automated flight modes
  • Interactive 3D cockpit view
  • AUv3 instrument and effect support
  • MIDI hardware integration
Features
Read full description

MNTRP is a drone instrument shaped like a journey: Earth to the Moon and back. A spaceship travels a figure-8 trajectory across the screen, and where the ship stands on that path IS the sound. There are no patches to browse — you play a position in space. THE TRIP The voyage passes through five stages, each with its own synthesis engines: • Liftoff — deep roaring engines, shaking metal • Interstellar — adventurous, airy drift (crossed twice: outbound and homebound) • Around the Moon — dark, mysterious, bowed strings • Reentry — the burn of coming home As the ship moves, the stages blend continuously into each other — a morph, never a switch. FLYING • Drag the spaceship along the path, or move the mission slider. • Or set a flight time (10–300 seconds) and press FLY: the ship flies itself and the sound travels with it. Missions loop — the entered time is one lap. Single-run mode lives in OPT. • The ship's position sets WHERE you are; the keyboard sets what sounds there. Nothing plays until you play. HOLD latches keys for hands-free drones. THE FIVE SHIP SYSTEMS The five big knobs mix the ship's systems, and each system keeps the same role through every stage: • ENGINES — the low floor: rumble, pedal, buffet • HULL — the ship's pitched voice • LSS — life support: the air • NAV — events and markers • COMMS — radio artefacts and telemetry TUNE Twelve shaping knobs under the TUNE panel: CUTOFF, RESO, DRIVE, TILT, TONE, SUB, ATTACK, RELEASE, GLIDE, RATE, DEPTH, SPACE. TRIPS — KNOB AUTOMATION Hold a still finger on any knob for two seconds to lock its value at the ship's current position — a red dot marks it on the knob's arc. Lock two or more points and the knob glides between them as the ship flies, around the full loop with no jump at the wrap. Name your trips, save them, load them. POV Press POV to ride in the cockpit: the Moon approach, the dark far side, Earthrise, the sun with its waving corona. Tilt your device to look around — the scene is a real 3D space in low-res pixel art: parallax stars, orbiting satellites, meteors, a photographed Milky Way. The sunlight follows your tilt, the terminator creeps across Earth and Moon — and at the right angle you can pull the Earth's shadow onto the Moon for an eclipse. AUV3 MNTRP ships as an AUv3 instrument and an AUv3 effect for hosts like AUM, GarageBand and Logic. The instrument is the full trip; the effect flies your own audio through the engines — the host signal bows the Moon's strings and feeds the reentry burn. Full state saving in the host; hardware MIDI in the standalone app. No accounts, no network, no data collected. Just the trip.

Screenshots

Undae3 screens
MNTRP3 screens

Verdict

The call

The clearest difference is price: Undae at $1.99 against MNTRP's $4.99. MNTRP's advantage is ratings volume (3 vs 1). On rating, ads, in-app purchases and monetization model 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

Undae costs $1.99 and MNTRP $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Undae against 5.0 for MNTRP. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Scorecard2 real differences · 8 level
Undae versus MNTRP: the parameters behind the verdict, then further details
ParameterUndaeMNTRP
Price$1.99 — better$4.99
Rating5.0 (1 ratings)5.0 (3 ratings)
Positive reviews—100.0% of reviews
Number of ratings13 — better
Update frequency—Every 2 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better18.0
Further details — not scored
Size3 MB3 MB
Age rating4+4+
DeveloperKonstantin Torsten SchutzLASZLO DOBROVOLSZKI

In-app purchases

None

Undae

No in-app purchases

None

MNTRP

No in-app purchases

Questions

Is Undae free?
Undae costs $1.99, with no in-app purchases.
Is MNTRP free?
MNTRP costs $4.99, with no in-app purchases.
Which has better reviews, Undae or MNTRP?
Undae and MNTRP are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.
Do Undae or MNTRP have ads?
Neither Undae nor MNTRP shows ads.

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