TB Lowtone vs Tāl Chakra
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Tāl Chakra
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Your guru draws a circle on the board, marks the beats, claps the vibhags, and suddenly the taal makes sense. Tāl Chakra puts that moment in your pocket. This is not a tabla machine. It is an interactive guide to the rhythmic architecture of Hindustani classical music. Each taal is drawn as a circle (the way musicians have understood rhythm for centuries) and brought to life with real tabla recordings, animated playback, and tools that let you take the structure apart and put it back together. 16 TĀLS, ONE CIRCLE From the 6-beat Dādrā to the 16-beat Tīntāl and the rare 14-beat Ārā Chautāl, each taal plays with studio-recorded tabla samples across three dynamic layers. Watch the bead travel the cycle, hear each bol as it lands, and build an intuitive sense of the rhythm that no metronome click can give you. X-RAY MODE Peel back the layers of any taal. Concentric rings reveal vibhāg groupings, tālī and khālī accents, and mātrā positions side by side. See instantly why Rūpak feels nothing like Jhaptāl, even though they are only one beat apart. Compare two tāls with the same beat count by crossfading between them. LAYKĀRĪ LAB Practice subdivisions against a running cycle. Choose from nine ratios: from barābar (1:1) up through sātgun (7:1), plus the fractional cross-rhythms kuāḍ and āḍ. Colour-coded chips group the ratios into three families. Tap Auto and the app cycles through whichever family your current ratio belongs to, advancing one step per full taal cycle, the way your guru would push your speed in a lesson. Watch the subdivision dots appear between the beats and hear a second layer play against the taal. TIHĀĪ BUILDER Compose three-phrase cadences that resolve on sam. Set the starting beat, phrase length, and gap, then watch three coloured arcs draw themselves around the circle in real time. Green means it lands. Red means it doesn't. Tap play to hear your tihāī against the running taal, and feel the resolution when the third phrase hits sam. Includes 48 classic preset patterns across the tāl library, tailored to each rhythmic cycle. TEMPO LAB AND PERFORMANCE MAP Explore the relationship between tempo and density across five laya zones, from Ati Vilambit to Ati Drut. Then zoom out with the Performance Map to see how rhythm lives inside a full rāg performance: from the unmeasured ālāp, through the gathering intensity of the gat sections, to the climactic final cadence. BUILT FOR SERIOUS PRACTICE A tanpura drone in all 12 keys gives your practice a tonal anchor. Haptic pulses mark sam or every beat, so you can close your eyes and still feel the cycle. A session counter tracks completed cycles and elapsed time. A glossary of 50+ terms with Devanāgarī script helps you learn the vocabulary alongside the music. Designed for iPhone, iPad, and Mac.
Screenshots
Verdict
The clearest difference is update cadence: Tāl Chakra at weekly against TB Lowtone's every 3 months. TB Lowtone's advantage is price ($9.99 vs $11.99) and iOS requirement (13.0 vs 18.0). On ads, in-app purchases and device support 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
TB Lowtone costs $9.99 and Tāl Chakra $11.99 up front. Neither carries in-app purchases, so what you see is what you pay.
TB Lowtone ships an update every 3 months, Tāl Chakra weekly. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.
| Parameter | TB Lowtone | Tāl Chakra |
|---|---|---|
| Price | $9.99 — better | $11.99 |
| Rating | 4.4 (14 ratings) — better | — |
| Positive reviews | 84.6% of reviews | — |
| Number of ratings | 14 — better | — |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 13.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 13 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | ToneBoosters | TheMM |
In-app purchases
TB Lowtone
No in-app purchases
Tāl Chakra
No in-app purchases









