Gravity Machine vs deriva tape machine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gravity Machine
Create music by manipulating a miniature solar system. Fling orbs that bounce off walls, generating notes based on physics and chosen scales. Customize worlds, sounds, and tunings for unique generative compositions.
- Generative music creation
- Physics-based orb interactions
- Customizable scales and tunings
- Multiple world shapes
- AUv3 and standalone modes
- MIDI output
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A tiny solar system that plays piano. Four orbs, a gravity well, and walls that ring like bells. Fling an orb and it falls, ricochets, and plays notes. Where it hits a wall decides what it plays; the physics decide when. You don't write the music. You build a small world and curate what it sings. Gravity is a touch instrument first. Grab an orb and it follows your finger; let go and the throw becomes its velocity. Drag the gravity well and every orbit in the room bends. Set Pulse and the well breathes in time with the tempo, so chaos starts keeping a schedule. EVERYTHING LANDS IN KEY Every impact point along the boundary maps to a note of the current scale, low at one end, high at the other. Pick from 16 scales and 11 tuning systems (12-TET, just intonation, maqam, shruti and more). The scale strip along the bottom is a key-change timeline: tap a segment, change the key, and the whole world modulates on the bar. EIGHT WORLDS TO BOUNCE IN Rectangle, circle, triangle, hexagon, pentagon, octagon, diamond, star. Sharp corners ricochet hard and play jagged. Round shapes glide and play smooth. SOUND A 16-voice pluck engine through a double-bass body and reverb. Octave, key range, quantize from 1/32 to 1/2, orb-to-orb collisions on or off. Presets to start from, themes for the visuals. AUv3 AND STANDALONE Use Gravity full-screen as a standalone instrument, or load it as an AUv3 in GarageBand, AUM, Logic Pro, Cubasis, Loopy Pro and any other Audio Unit host. Each orb has its own MIDI channel, so Gravity can drive other instruments in your host. ONE PRICE No account, no ads, no in-app purchases, no data collected. Buy it once and it's yours. The same engine ships as a VST3 and AU plugin for Windows and macOS at touchmachines.com.
deriva tape machine
This audio plugin emulates the warm, silky sound of reel-to-reel tape machines. It offers advanced sound modeling with simple controls, allowing for creative pitch manipulation and saturation effects. Customize your sound with adjustable bias, wear, and tape speed.
- Reel-to-reel tape emulation
- Warm, silky sound quality
- Adjustable input drive and saturation
- Bias and wear simulation
- Pitch bending by pulling tape
- Customizable UI colors
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deriva is a tape machine plugin that is meant to give a polished and warm silky sound on your mix or master bus. built on published research papers¹ and my own experience recording with analog tape in studio, the sound is true to how real tape actually sounds. although the engine under the hood is advanced and complex, the controls are meant to be simple and easy, so you can set and forget and focus on your music. a fun feature is that you can pull the tape while the audio is running, causing the pitch to go up or down. the controls are pretty much self-explanatory: input and drive control how hard the signal and saturation will be. also sounds great on drums! bias simulates everything from a badly aligned machine to a brand new and serviced one, together with wear. a common misconception is that there is a lot of wow and flutter on tape machines. most professional tape machines do not have much flutter and wow, but in deriva you can push the machine a bit if you like - now with separate controls. tape speed affects the sound of the tape, where the lowest is dark and the highest is studio clean. if you want to bring back some of the high frequencies lost in tape speed, you may use the tone knob next to it. if you're bored with the UI you also have the possibility to change the colors and invert them. ON THE IPAD deriva is an Audio Unit (AUv3) and works with Logic Pro, GarageBand, AUM, Cubasis, Loopy Pro, Drambo and the rest. the standalone version either works as a live effect for your instrument, but also as a tape machine player: load in your own song and listen to it "on tape". you may also record live, or export the whole song with your current settings. Requires iPadOS 15 or later. also available for Mac, Windows and Linux at eikremaudio.com. ¹ Jatin Chowdhury, "Real-Time Physical Modelling for Analog Tape Machines", Proc. DAFx-19, Birmingham, 2019 (CC-BY 3.0). Otto Mikkonen, Alec Wright, Eloi Moliner and Vesa Välimäki, "Neural Modeling of Magnetic Tape Recorders", Proc. DAFx-23, Copenhagen, 2023. deriva is an independent implementation written from the published papers.
Screenshots
Verdict
Gravity Machine and deriva tape machine are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Gravity Machine costs $9.99 and deriva tape machine $9.99 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 Gravity Machine against 5.0 for deriva tape machine. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Gravity Machine ships an update weekly, deriva tape machine every 4 days. The most recent releases landed on October 7, 2026 and October 21, 2026 respectively.
| Parameter | Gravity Machine | deriva tape machine |
|---|---|---|
| Price | $9.99 | $9.99 |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Weekly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 12 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Touchmachines | Kristoffer Eikrem |
Customer experience
Gravity Machine
deriva tape machine
In-app purchases
Gravity Machine
No in-app purchases
deriva tape machine
No in-app purchases
Questions
Is Gravity Machine free?
Is deriva tape machine free?
Which has better reviews, Gravity Machine or deriva tape machine?
Do Gravity Machine or deriva tape machine have ads?
Which is updated more often, Gravity Machine or deriva tape machine?
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