# Pure Acid vs SynthMaster 2

The clearest difference is ads: Pure Acid at none against SynthMaster 2's shown. Pure Acid also leads on review sentiment (94% vs 68%) and chart position (#89 vs unranked). On price, rating, ratings volume and update cadence there is nothing between them.

Pure Acid costs $14.99 and SynthMaster 2 $14.99 up front. Pure Acid sells 2 one-off in-app purchases and SynthMaster 2 sells 32 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Pure Acid against 4.8 for SynthMaster 2. Both are backed by a comparable volume of ratings — 169 and 474 respectively. Written reviews are what separate them: 94% of Pure Acid's written reviews are positive against 68% of SynthMaster 2's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Pure Acid | SynthMaster 2 |
| --- | --- | --- |
| Price | $14.99 | $14.99 |
| Rating | **[4.9 (169 ratings)](https://appshunter.io/ios/app/pure-acid/id1481283602/reviews)** | [4.8 (474 ratings)](https://appshunter.io/ios/app/synthmaster-2/id1566704584/reviews) |
| Number of ratings | 169 | **474** |
| Positive reviews | **94.1% of reviews** | 68.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#89** | — |
| Size | 44 MB | 918 MB |
| Requires iOS | **13.0** | 15 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dmitrij Pavlov](https://appshunter.io/developer/478154322) | [KV331 Audio](https://appshunter.io/developer/944155925) |

## What reviewers say

### Pure Acid

[App page](https://appshunter.io/ios/app/pure-acid/id1481283602)

**Currently charting:** #89 Top Paid · Music (US App Store)

This app is a high-quality bassline synthesizer and drum machine inspired by classic 80s hardware. It offers a retro analog sound with modern features for fast and fun music creation. Explore various genres with factory presets and create unique rhythms and basslines.

**Highlights:** AUv3, Ableton Link, AudioBus, IAA support, Classic bassline waveforms (Saw, Pulse), Distortion and filter LFO effects, 32-step sequencer with pattern editing, 16 independent drum parts with customizable sounds, Realtime master effects with XY-pad

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ukrainian style color scheme | $4.99 | one-time |
| Ukrainian style app icon | $4.99 | one-time |

**What reviewers like**

- 🚀 Powerful and feature-rich
- 👍 Intuitive and easy to use
- 🎶 Excellent sound quality
- 🎛️ Great sequencing and programming capabilities
- 🔌 Seamless integration with other apps and hardware

**What reviewers complain about**

- 🐛 Occasional audio cutoff or sync issues
- 🔍 Lack of detailed documentation or tutorials
- 🔀 Limitations in pattern length and drum sequencing

**Reported bugs**

- GUI scaling issues on smaller devices
- Crashes or freezes on certain devices

**Requested features**

- Ability to import MIDI files
- Standalone drum machine mode
- Expanded drum sample library
- Knob/parameter automation recording


### SynthMaster 2

[App page](https://appshunter.io/ios/app/synthmaster-2/id1566704584)

This powerful software synthesizer offers a vast array of sound design capabilities, including multiple oscillator modes, extensive modulation options, and a wide selection of filters. Explore over 1000 factory presets or create your own unique sounds. Available as a standalone app or AUv3 plugin.

**Highlights:** Multiple oscillator modes (Basic, Additive, Wavetable, Vector), Extensive modulation architecture, 6 filter categories, Import custom wave files, 1000+ factory presets, Standalone app and AUv3 plugin

**In-app purchases (32)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BigTone Tableworks Vol.2 | $1.99 | one-time |
| Burak Yeter Synth Sounds Vol1 | $1.99 | one-time |
| Aiyn Zahev Expansion 1 | $1.99 | one-time |
| BigTone Tableworks Vol.1 | $1.99 | one-time |
| Michael Kastrup Expansion | $1.99 | one-time |
| EDM Stars Volume 1 | $1.99 | one-time |
| Nori Ubukata Pop Hits Vol.4 | $1.99 | one-time |
| Rob Lee EDM Expansion Vol.2 | $1.99 | one-time |
| Alonso Sound Future Rave | $1.99 | one-time |
| Nori Ubukata Pop Hits Vol.1 | $1.99 | one-time |
| BigTone Techno Bits Vol.1 | $1.99 | one-time |
| Club Sequences Vol.1 | $2.99 | one-time |
| Historical Synth Giants Vol.3 | $2.99 | one-time |
| Dawn of Electronic Music Vol.2 | $2.99 | one-time |
| Nori Ubukata Art Rock Basics | $2.99 | one-time |
| BigTone Analog Basics 02 | $4.99 | one-time |
| BigTone Analog Basics | $4.99 | one-time |
| BigTone Signature Sounds Vol.1 | $4.99 | one-time |
| NU Sounds of the World | $4.99 | one-time |
| Historical Synth Giants Vol.4 | $4.99 | one-time |
| Historical Synth Giants Vol.1 | $4.99 | one-time |
| Historical Synth Giants Vol.2 | $4.99 | one-time |
| Japan Vintage | $4.99 | one-time |
| NatLife Future Bass Sounds | $4.99 | one-time |
| Danyella EDM Expansion Vol.1 | $4.99 | one-time |
| Dawn of Electronic Music Vol.1 | $4.99 | one-time |
| Dawn of Electronic Music Vol.3 | $4.99 | one-time |
| Rob Lee EDM Expansion Vol.3 | $4.99 | one-time |
| Natlife Disco Funk | $4.99 | one-time |
| Insigne Essentials 4 Clubbin | $4.99 | one-time |
| Desktop Presets Upgrade | $9.99 | one-time |
| All Expansions Bundle | $49.99 | one-time |

**What reviewers like**

- 🚀 Best synth on iPad
- 👍 Delicious sound
- 👍 Tremendously powerful synth
- 👍 Great synth with complex possibilities and great sound(s)
- 👍 Perfeito

**What reviewers complain about**

- 🐛 Auswahl der Modulationsquellen funktioniert nicht richtig
- 🐛 Echt schlecht
- 🐛 Broken Preset System for a powerful synth
- 🐛 Please fix the OSC behavior on Square and Saw
- 🐛 Preset issues

**Reported bugs**

- Presets not loading correctly
- Modulation not working after loading project
- Skin resets to default
- App crashes frequently

**Requested features**

- Pitch bend/glide for imported samples
- Integration with AUM audio mixer


## Frequently asked questions

### Is Pure Acid free?

Pure Acid costs $14.99, and also offers in-app purchases.

### Is SynthMaster 2 free?

SynthMaster 2 costs $14.99, and also offers in-app purchases.

### Which has better reviews, Pure Acid or SynthMaster 2?

Pure Acid is rated higher. Pure Acid averages 4.9 out of 5 from 169 ratings, while SynthMaster 2 averages 4.8 from 474 ratings.

### Do Pure Acid or SynthMaster 2 have ads?

SynthMaster 2 shows ads; Pure Acid does not.

### Which is updated more often, Pure Acid or SynthMaster 2?

Pure Acid ships an update every 3 weeks, and SynthMaster 2 every 3 weeks. Most recently, Pure Acid was updated on October 26, 2026 and SynthMaster 2 on October 27, 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.*