Comparison

TB Flowtones vs Qithesizer

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

Head to head
About

TB Flowtones

This virtual analog synthesizer app offers a true VA synthesis engine with analog-modeled filters and extensive modulation options. Create warm, analog-sounding music with a powerful architecture, diverse waveforms, and pro-grade effects. It also includes an integrated step sequencer and hundreds of presets.

Highlights
  • True virtual analog synthesis engine
  • Analog-modelled non-linear filters
  • Extensive modulation options
  • Pro-grade studio effects
  • Integrated step sequencer
  • Hundreds of presets and intelligent randomizer
Read full description

TB Flowtones Virtual Analog Synthesizer app and AUv3 plug-in Thanks to it's true VA synthesis engine, the use of analog-modelled non-linear filters and extensive modulation options, Flowtones sounds warmer and more analog than digital romplers and wavetable-based synths. TB Flowtones comes as stand-alone app as well as AUv3 plugin. True virtual analog synthesis features: - 4 VCO architecture (two voice layers with two VCOs each) - 4 synthesis engine types, in part modelled after famous analog synthesisers - 36 analog VCO waveforms featuring all classic waveforms and more - All VCO waveforms support pulse width modulation - Full stereo and mono unison modes for each VCO independently - Noise and subharmonic oscillators for each VCO - Unique ring and self-modulation matrix - High-quality, warm, non-linear filters (VCF) with over 30 filter types, including unique multi-resonance filters Modulation features: - Four LFOs with 30 waveforms each - LFOs can modulate other LFOs, including themselves! - Three additional envelope generators, with key velocity modulation - Quick access to modulation strengths through context menus - Hundreds of modulation signal paths available - LFOs can produce noise as waveform to randomly modulate other parameters; for example to simulate slight variations in analog filter parameters as they happen in analog circuits. Pro-grade effects - Studio-quality reverb, delay, and chorus effects - Unique formant filter to add vocal character - Analog and digital distortion / bit crushing effects - Master equaliser and peak limiter for final touch - Non-linear power supply simulation for authentic interaction between notes Step sequencer - Fully integrated, intuitive step sequencer - Can trigger chords and note series / phrases - Can run asynchronously or synchronously to the host - Smart copy/paste of note series to improve workflow - Smart zoom: edit fine details while keeping an overview over the full sequence Presets and intelligent randomizer - Flowtones comes with hundreds of presets to spark your creativity - Intelligent randomizer to explore endless sound synthesis possibilities What you should know: - Licenses acquired for this platform are not compatible with other platforms. - Audio Unit (AUv3) extensions require an iPad mini 2, iPad 4 or later models.

About

Qithesizer

This advanced music synthesizer combines virtual analog, wavetable, and physical modeling sound engines. It offers extensive modulation capabilities, a built-in sequencer, and on-screen keyboard for creating complex sounds.

Highlights
  • Multiple sound engines (virtual analog, wavetable, physical modeling)
  • Extensive modulation sources and destinations
  • Full MIDI mapping
  • 16-step sequencer with pattern editor
  • Waveform and dynamic visualizations
  • On-screen keyboard
Features
Read full description

Meet Qithesizer, a powerful multi-engine hybrid software synthesizer. Designed with wind controller in mind, it combines virtual analog, wavetable, and physical modeling in one. 【Features】 ∙ Multiple sound engines: basic waveforms, hundreds of digital waveforms, multiple physical models ∙ 11 modulation sources, 27 modulation destinations ∙ Full midi mapping ∙ 16-step sequencer with powerful pattern editor, save patterns by preset ∙ Waveform and dynamic visualizations ∙ Full-size, on-screen keyboard Our site: www.robkoo.com Facebook Page: @RobkooMusic Twitter: @Robkoo_Music Feedback: cuimingwei@robkoo.com

Screenshots

TB Flowtones4 screens
Qithesizer4 screens

Verdict

The call

The clearest difference is rating: TB Flowtones at 4.7 against Qithesizer's 4.1. TB Flowtones also leads on price ($9.99 vs $12.99) and ratings volume (39 vs 11). Qithesizer's advantage is update cadence (fortnightly vs every 3 months). On review sentiment, 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

TB Flowtones costs $9.99 and Qithesizer $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

TB Flowtones holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 39 and 11 respectively. Written reviews point the same way: 83% of TB Flowtones's written reviews are positive against 77% of Qithesizer's.

UpkeepUpdate frequency

TB Flowtones ships an update every 3 months, Qithesizer fortnightly. Both last shipped on November 3, 2026.

Scorecard5 real differences · 5 level
TB Flowtones versus Qithesizer: the parameters behind the verdict, then further details
ParameterTB FlowtonesQithesizer
Price$9.99 — better$12.99
Rating4.7 (39 ratings) — better4.1 (11 ratings)
Positive reviews82.9% of reviews — better76.9% of reviews
Number of ratings39 — better11
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size17 MB29 MB
Age rating4+4+
DeveloperToneBoostersRobkoo Information & Technologies Co., Ltd.

Customer experience

TB Flowtones

All ratings39 ratings
Positive89.7%
Neutral7.7%
Negative2.6%
Written reviews35 reviews
Positive82.9%
Neutral11.4%
Negative5.7%

Qithesizer

All ratings11 ratings
Positive72.7%
Neutral9.1%
Negative18.2%
Written reviews13 reviews
Positive76.9%
Neutral0.0%
Negative23.1%

In-app purchases

None

TB Flowtones

No in-app purchases

None

Qithesizer

No in-app purchases

Questions

Is TB Flowtones free?
TB Flowtones costs $9.99, with no in-app purchases.
Is Qithesizer free?
Qithesizer costs $12.99, with no in-app purchases.
Which has better reviews, TB Flowtones or Qithesizer?
TB Flowtones is rated higher. TB Flowtones averages 4.7 out of 5 from 39 ratings, while Qithesizer averages 4.1 from 11 ratings.
Do TB Flowtones or Qithesizer have ads?
Neither TB Flowtones nor Qithesizer shows ads.
Which is updated more often, TB Flowtones or Qithesizer?
TB Flowtones ships an update every 3 months, and Qithesizer fortnightly. Most recently, TB Flowtones was updated on November 3, 2026 and Qithesizer on November 3, 2026.

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