Comparison

KG vs Tonic Synths

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

Head to head
About

KG

Features
Read full description

[From '80s Legend to Modern Era: Put the Feel of Authentic Hardware in Your Hands] "KG-SQUARE" is an analog modeling synthesizer app that packs the aesthetics and intuitive operation of professional hardware into an iPhone-sized format. While inheriting the simplicity of its predecessor, "FX-SQUARE," this version delivers a massive upgrade to both its sound engine and UI. From thick, punchy synth basses to dreamlike, immersive pads, it features a wide range of high-quality tones ready to elevate modern music production. ◆ Key Features Highly Immersive Hardware-Style UI: Designed with lifelike 3D knobs and LED indicators, giving you the professional feel and excitement of tweaking real gear. KAOSS PHYSICS (XY Pad): Simply glide your finger across the right-side pad to dynamically control Cutoff, Resonance, and effects. Create sweeping, space-like tonal shifts in real time as you play. Two Powerful Effects: Equipped with "REVERB" for deep spatial warmth and "DELAY" to add movement to your echoes. Seamlessly blend them using dedicated knobs. Polished Sound Presets: Carefully selected, massive sounds unique to analog modeling, including MP Bass, MP Lead, MP PolySynth, and more. Smooth Playability: Features responsive mini-keys along with screen-edge protection to prevent accidental touches, keeping you focused entirely on your performance. Perfect as a companion synth for music production, on-the-go sound design, or intuitive finger-play performances. Experience the ultimate analog modeling sound today!

About

Tonic Synths

This app offers a portable music studio with 14 unique synthesizers for creating and sculpting audio. Users can draw sounds, program melodies, and apply effects like reverb and compression. Recordings can be exported as WAV files for use in other projects.

Highlights
  • 14 unique synthesizers
  • XY pad sound sculpting
  • 8-step melody programming
  • Resonant filter sculpting
  • Reverb and compressor effects
  • 60-second audio recording
  • WAV file export
Features
Read full description

Tonic Synth puts a studio full of synthesizers in your pocket. 14 unique synths. All live. All real. Draw sound with your finger on the XY pad. Twist an FM drone into alien textures. Program an 8-step melody. Sculpt noise through resonant filters. Drown everything in reverb. Every control changes the sound instantly — no presets, no menus, just your hands on the instrument. Hear something you love? Hit record. You get 60 seconds. Export it as a WAV file and take it anywhere — into your DAW, your sample library, or share it straight from the app. SYNTHS INCLUDE - FM Drone - XY Speed Pad - Delay Sequencer - Step Sequencer - Filtered Noise - Reverb - Compressor - Bandlimited Oscillator - Sine Sum - Stereo Delay - and more! Free. No ads. No in-app purchases. Just sound.

Screenshots

KG1 screens
Tonic Synths4 screens

Verdict

The call

The clearest difference is iOS requirement: Tonic Synths at 15.6 against KG's 26.5. On price, update cadence, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

KG ships an update every 3 weeks, Tonic Synths every 11 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 8 level
KG versus Tonic Synths: the parameters behind the verdict, then further details
ParameterKGTonic Synths
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 3 weeksEvery 11 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.515.6 — better
Further details — not scored
Size36 MB20 MB
Age rating4+4+
DeveloperKouki YoshimotoUpTech Works, LLC

In-app purchases

None

KG

No in-app purchases

None

Tonic Synths

No in-app purchases

Questions

Is KG free?
KG is free to download, with no in-app purchases.
Is Tonic Synths free?
Tonic Synths is free to download, with no in-app purchases.
Do KG or Tonic Synths have ads?
Neither KG nor Tonic Synths shows ads.
Which is updated more often, KG or Tonic Synths?
KG ships an update every 3 weeks, and Tonic Synths every 11 days. Most recently, KG was updated on November 5, 2026 and Tonic Synths on October 31, 2026.

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