ABDCTN vs Reelgrain
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ABDCTN
This app generates classic sci-fi synthesizer sounds live from oscillators, filters, and envelopes. Interact with a visual farm interface where elements control sound parameters. Create unique sounds by bending, stretching, and rebuilding them.
- Live sound generation
- Visual instrument interface
- Interactive sound manipulation
- Customizable oscillators and filters
- Automated sound sequencing
- AUv3 instrument support
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Every science-fiction film had a sound department, and somewhere in it stood a synthesizer. ABDCTN is that synthesizer, rebuilt for your phone and your iPad: not a collection of recordings of those sounds, but the machine that makes them. Theremins, saucers, tractor beams, alarms, talking computers, and everything in between, generated live from oscillators, filters and envelopes. Each sound is a starting point, yours to bend, stretch and rebuild until it is one nobody has heard before. THE PICTURE IS THE INSTRUMENT There are no knobs, no sliders, no menus. The whole screen is a farm at night, and everything on it is a control. The fence is the keyboard: planks are white keys, flower pots are black keys. The alien on the left is the envelope: pull its body for attack, stretch its neck for decay, lift and reach its hands for sustain and release. The alien on the right is the filter. Lift the cow's tail to detune, lift the whole cow into the beam and the reverb grows. Slide the barn door for volume. Raise the chimney for drive. Tap the hayloft window to crush the bits. The clouds are the LFO: how much, how fast, what shape. Drag the saucer higher and the echo follows. Tap a light on the saucer to choose a sound, tap the moon to change the bank. THE RAY GUN A ray gun hangs next to the moon, and it makes the farm play itself. Tap the gun to choose the ray's speed. Light blue sweeps every second, cyan every three seconds and pink every ten. Tap once more for static, which erases. Hold the gun and it comes off its hook. Point its tip at anything on the farm, and whatever lights up yellow can be hit: an alien's legs, neck or either hand, the cow or her tail, the saucer's dome, the barn door, the chimney, the hayloft window or a cloud. Let go and that part turns the ray's colour. It then sweeps from one end of its range to the other on its own, in time with the sound. The filter opens and closes, the cow floats up into the reverb and sinks back, the window flickers the crusher on and off, and the third cloud steps through the LFO shapes. Shoot as many parts as you like, each at its own speed. Touch a swept part and it holds still under your finger. Shoot a part with static to stop its ray, or double-tap the gun to clear every ray on the sound. Rays are saved with each sound and in your presets. In a host, every ray is an automatable parameter. Every edit is remembered per sound. Hold a light to take a sound back to the factory. A REAL SYNTHESIZER Two oscillators with band-limited saw and pulse, an endless Shepard stack for lifts that never stop rising, noise and ring modulation. A state-variable filter that sweeps from low-pass through band-pass to high-pass, with envelope, key tracking and LFO. Real stereo: the oscillators spread across the field, voices sit where their keys are, a ping-pong tape echo bounces between the speakers, a spring-like reverb on each side. IN THE STUDIO Works as an AUv3 instrument in AUM, Drambo, Logic Pro, GarageBand and other hosts, with the same picture inside the host and every control exposed as an automatable parameter. MIDI 2.0 with full MPE: per-note pitch bend, pressure and timbre, so expressive controllers play it the way they were meant to. A hold latch keeps chords sounding with no fingers on the screen, and the instrument keeps playing in the background from a MIDI keyboard. Save and load your own presets from the transmission log. Pay once, own it. No subscription, no ads, no account, no tracking, nothing leaves your device. Somewhere a cow is rising slowly into the light. She sounds wonderful.
Reelgrain
Transform your audio with analog tape effects. Add warmth, texture, and instability to your sound. Export high-quality audio or transcribe it into MIDI notes for further manipulation.
- Analog tape sound simulation
- Saturation, wow, flutter, hiss, crackle
- Audio-to-MIDI transcription
- MIDI manipulation
- AUv3 plugins
- Stereo image fine-tuning
- Preset saving
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Give your sound a past. Reelmoire is a hands-on tape sound studio for iPhone, iPad, and Mac. Import an audio file, choose from six machine profiles—studio reels, cassette decks, and compact recorders—and dial in anything from gentle warmth to worn, unstable texture. SHAPE THE SOUND • Add saturation, wow and flutter, head bump, hiss, dropouts, and crackle. • Play and loop your track, then compare the original with the processed sound. • Fine-tune the stereo image and save your favorite settings as presets. TAKE IT FURTHER • Export finished audio as WAV, M4A, AIFF, or CAF. • Transcribe audio into MIDI notes, including chords and overlapping parts. • Import MIDI to shape note timing, pitch, and velocity, with original/processed preview. MAKE MUSIC IN YOUR HOST Use three AUv3 plug-ins in compatible music apps: a tape audio effect, a MIDI processor, and a polyphonic instrument. Reelmoire's tape character and tactile controls follow you into your session. Audio-to-MIDI results depend on the source and may need editing. MIDI does not retain the original timbre or tape effects.
Screenshots
Verdict
The clearest difference is price: Reelgrain at $2.99 against ABDCTN's $3.99. On rating, ratings volume, 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
ABDCTN costs $3.99 and Reelgrain $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for ABDCTN against 5.0 for Reelgrain. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
| Parameter | ABDCTN | Reelgrain |
|---|---|---|
| Price | $3.99 | $2.99 — better |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Number of ratings | 2 — better | 1 |
| Update frequency | Daily | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 43 MB |
| Age rating | 9+ | 4+ |
| Developer | LASZLO DOBROVOLSZKI | 宁 徐 |
Customer experience
ABDCTN
Reelgrain
In-app purchases
ABDCTN
No in-app purchases
Reelgrain
No in-app purchases








