# Agonizer vs TB Lowtone

The clearest difference is in-app purchases: TB Lowtone at none against Agonizer's 3. Agonizer's advantage is rating (4.8 vs 4.4) and ratings volume (203 vs 14). On review sentiment, update cadence, ads and device support there is nothing between them.

Agonizer costs $7.99 and TB Lowtone $9.99 up front. Agonizer sells 3 one-off in-app purchases. TB Lowtone asks for nothing beyond the download.

Agonizer holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Agonizer has 203 ratings behind it against 14, so its average is the more settled of the two. Written reviews complicate that: 78% of Agonizer'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.

Agonizer ships an update every 5 months, TB Lowtone every 3 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Agonizer | TB Lowtone |
| --- | --- | --- |
| Price | **$7.99** | $9.99 |
| Rating | **[4.8 (203 ratings)](https://appshunter.io/ios/app/agonizer/id1499426175/reviews)** | [4.4 (14 ratings)](https://appshunter.io/ios/app/tb-lowtone/id6448315127/reviews) |
| Number of ratings | **203** | 14 |
| Positive reviews | 78.0% of reviews | **84.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 362 MB | 13 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kai Aras](https://appshunter.io/developer/370820899) | [ToneBoosters](https://appshunter.io/developer/1472446500) |

## What reviewers say

### Agonizer

[App page](https://appshunter.io/ios/app/agonizer/id1499426175)

This app is a monophonic synthesizer focused on bass sounds, developed with a synth bass expert. It features dual wavetable oscillators, a mangle section, and built-in stereo effects. It supports MPE controllers and various audio/MIDI connectivity options for standalone or app-to-app use.

**Highlights:** Monophonic synth engine for bass, Dual wavetable oscillators, Built-in stereo effects, MPE controller support, Standalone and AUv3 operation, 140+ factory presets

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Neon Nightmare Pack | $1.99 | one-time |
| Chrome Oasis Pack | $1.99 | one-time |
| Circuit Bender Pack | $1.99 | one-time |

**What reviewers like**

- 🎵 Excellent sound quality and unique bass tones
- 🎨 Intuitive and well-designed user interface
- ⚙️ Powerful modulation and sound design capabilities
- 🎛️ Wobulator feature for creative bass manipulation
- 📦 Great presets included with the app

**What reviewers complain about**

- 🐛 Keyboard legato/mono-synth behavior inconsistent
- 🐛 Frequent crashes in host applications (AUM, Cubasis, Audiobus)
- 🐛 No sound output in GarageBand and some AU hosts
- 🐛 App freezes on splash screen with iOS 18.3
- 🐛 UI responsiveness issues and knob lag

**Reported bugs**

- Keyboard does not properly handle legato/mono-synth note priority
- Crashes in Audiobus, AUM, and Cubasis host applications
- No sound output when used as AUv3 plugin in hosts
- No sound in GarageBand integration
- App freezes on splash screen with iOS 18.3

**Requested features**

- Polyphony mode or toggle between mono and poly
- Envelope drawing capability instead of preset selection
- Menu-based waveform selection instead of cycling
- Arpeggiator function
- Preset browser search and favorites filter


### TB Lowtone

[App page](https://appshunter.io/ios/app/tb-lowtone/id6448315127)

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.

**Highlights:** 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

**In-app purchases:** none


## Frequently asked questions

### Is Agonizer free?

Agonizer costs $7.99, and also offers in-app purchases.

### Is TB Lowtone free?

TB Lowtone costs $9.99, with no in-app purchases.

### Which has better reviews, Agonizer or TB Lowtone?

Agonizer is rated higher. Agonizer averages 4.8 out of 5 from 203 ratings, while TB Lowtone averages 4.4 from 14 ratings.

### Do Agonizer or TB Lowtone have ads?

Neither Agonizer nor TB Lowtone shows ads.

### Which is updated more often, Agonizer or TB Lowtone?

Agonizer ships an update every 5 months, and TB Lowtone every 3 months. Most recently, Agonizer was updated on October 25, 2026 and TB Lowtone on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*