BLEASS Filter vs TB Lowtone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BLEASS Filter
This app offers a stereo dynamic filter effect inspired by vintage analog synthesizers. It features an envelope follower and LFO for dynamic musical movement, providing a tactile user experience with detailed visual feedback.
- Stereo dynamic filter effect
- Vintage analog synth inspiration
- Envelope follower
- LFO with sync to beat
- Intuitive tactile interface
- Detailed visual feedback
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Inspired by the vintage analogue filters found on the world’s most renowned classic synths, and wrapped in our trademark super-modern interface design, BLEASS Filter delivers a great sound along with an intuitive and tactile user experience. The plugin also provides detailed visual feedback that can be read and understood at a glance. A static filter can be as dull as no filter at all, which is why we have included both an envelope follower and an LFO (Low Frequency Oscillator) in BLEASS Filter. The envelope follower can be tuned to perfectly match your audio, adding dynamic interest to your music, whilst the LFO creates repeating sweeps and movement that can run freely or sync to the beat. With superb versatility, ultra-efficient processing, and a great price, BLEASS Filter is guaranteed to bring new character and interest to your audio, and a smile to your face! BLEASS Filter is also available for Desktop visit www.bleass.com/filter for more information
TB Lowtone
This app is an innovative bass synthesizer and AUv3 plugin that uses loudness-domain harmonic synthesis for deeper, more consistent bass sounds. It features multiple oscillators, modulation options, and built-in effects, plus an AI randomizer for creating new patches.
- Loudness-domain harmonic synthesis
- 3 analog-simulated oscillators
- Voltage-controlled noise synthesizer
- AI randomizer for patch generation
- Extended LFOs and ADSR envelope
- Pro quality effects (reverb, chorus, delay)
- AUv3 plugin support
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TB Lowtone is an innovative bass synthesizer app and AUv3 plug-in featuring three analog-simulated, voltage-controlled oscillators with a large variety of waveform algorithms, continuous pulse-width modulation (PWM), Frequency Modulation (FM) and oscillator hard sync, complemented by a voltage-controlled noise synthesizer, parameter modulation a re-designed non-linear voltage controlled filter. TB Lowtone is the world's first bass synthesizer featuring loudness-domain harmonic synthesis, creating deeper, more consistent and production-ready bass sounds compared to conventional synthesizers operating in the (linear) amplitude domain. TB Lowtone also features an AI randomizer that generates new patches with a single click, and which learns from the patches you have already created to generate new, personalized patches! Loudness-domain synthesis Loudness perception of tones and harmonics is known to be highly non-linear and intricately frequency and level dependent. Equal loudness contours, or Fletcher-Munson curves demonstrate this drastic effect for sine tones, which is especially relevant for low frequencies. The loudness of a synthesizer bass note, and all its individual harmonics, will therefore depend strongly on what note you play on your synth's keyboard. To overcome the resulting inconsistencies in loudness and timbre, TB Lowtone features innovative, loudness-domain synthesis algorithms that adjust each harmonic individually to compensate for loudness deviations across frequency. Modulation and FX TB Lowtone provides two extended low-frequency oscillators (X-LFOs) featuring a wide range of waveforms. The LFOs can be beat and key synced, with a configurable onset delay and a specific number of cycles to run. In addition, a conventional ADSR envelope with configurable onset delay is provided. To top if all off, a gate editor designed to quickly put together modern production modulation patterns is available as well to modulate a range of VCO, VCN and VCF parameters. Reverb, chorus, and delay effects and a high-quality peak limiter are provided to produce production-ready sounds. Features: - 3 VCOs plus a VCN featuring a wide range of waveform algorithms - All VCOs support hard sync, pulse-width modulation (PWM) and frequency modulation (FM) - Lots of filter types for spectral shaping - 2 LFOs, one extra envelope and a gate editor for parameter modulation - Pro quality effects (reverb, chorus, delay, peak limiter) - Unique loudness domain synthesis algorithms - A smart randomiser that learns from your patches - AUv3 with resizable UI and dozens of color themes to choose from - Preset management including import and export options - Undo, redo, A/B switching 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.
Screenshots
Verdict
The clearest difference is rating: BLEASS Filter at 5.0 against TB Lowtone's 4.4. BLEASS Filter also leads on price ($3.99 vs $9.99) and iOS requirement (11.0 vs 13.0). TB Lowtone's advantage is update cadence (every 3 months vs every 18 months). On review sentiment, 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
BLEASS Filter costs $3.99 and TB Lowtone $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BLEASS Filter holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 22 and 14 respectively. Written reviews complicate that: 80% of BLEASS Filter's written reviews are positive against 85% of TB Lowtone's, so the app with the better star average is not the one people write more warmly about.
BLEASS Filter ships an update every 18 months, TB Lowtone every 3 months. Both last shipped on October 24, 2026.
| Parameter | BLEASS Filter | TB Lowtone |
|---|---|---|
| Price | $3.99 — better | $9.99 |
| Rating | 5.0 (22 ratings) — better | 4.4 (14 ratings) |
| Positive reviews | 80.0% of reviews | 84.6% of reviews — better |
| Number of ratings | 22 — better | 14 |
| Update frequency | Every 18 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 28 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | BLEASS | ToneBoosters |
Customer experience
BLEASS Filter
TB Lowtone
In-app purchases
BLEASS Filter
No in-app purchases
TB Lowtone
No in-app purchases









