# PolyTune vs Source Audio Neuro 3

The clearest difference is price: Source Audio Neuro 3 at Free against PolyTune's $4.99. Source Audio Neuro 3 also leads on rating (4.4 vs 2.8) and update cadence (every 4 weeks vs every 40 months). PolyTune's advantage is review sentiment (66% vs 21%) and iOS requirement (9.0 vs 16.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Source Audio Neuro 3 is free to download; PolyTune costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Source Audio Neuro 3 holds the better App Store score, 4.4 against 2.8. Both are backed by a comparable volume of ratings — 79 and 51 respectively. Written reviews complicate that: 66% of PolyTune's written reviews are positive against 21% of Source Audio Neuro 3's, so the app with the better star average is not the one people write more warmly about.

PolyTune ships an update every 40 months, Source Audio Neuro 3 every 4 weeks. The most recent releases landed on September 28, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | PolyTune | Source Audio Neuro 3 |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [2.8 (79 ratings)](https://appshunter.io/ios/app/polytune/id364009203/reviews) | **[4.4 (51 ratings)](https://appshunter.io/ios/app/source-audio-neuro-3/id968227110/reviews)** |
| Number of ratings | **79** | 51 |
| Positive reviews | **65.7% of reviews** | 21.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 4 weeks** |
| Monetization | Paid | **Free** |
| Size | 45 MB | 284 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [TC Electronic](https://appshunter.io/developer/364009206) | [Source Audio](https://appshunter.io/developer/1355718227) |

## What reviewers say

### PolyTune

[App page](https://appshunter.io/ios/app/polytune/id364009203)

This application provides a powerful and accurate tuning tool for musicians. It allows for simultaneous tuning of all strings, supports various guitar and bass modes, and offers drop tunings. Its technology is based on a highly-regarded pedal tuner used by professionals.

**Highlights:** Tune all strings at once, Guitar/bass mode, Drop tunings support, Award-winning pedal technology, Chromatic tuning modes, High accuracy

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🩵 Works really well
- 💯 Accurate and precise
- 🔢 Polyphonic tuning mode
- 🎨 Customizable display colors
- 🔌 Works with electric and acoustic guitars

**What reviewers complain about**

- 🐛 Crashes or freezes on newer iOS versions
- 🔇 Struggles to pick up low strings or in noisy environments
- ⏱️ Screen dims during use
- 🚫 No support for alternate/custom tunings
- 💤 Drains battery quickly when running in background

**Reported bugs**

- Crashes on launch
- Unable to detect or tune certain strings
- Inaccurate tuning readings

**Requested features**

- Add support for 432Hz tuning
- Implement custom tuning options
- Improve compatibility with external audio interfaces
- Add a dedicated on/off switch


### Source Audio Neuro 3

[App page](https://appshunter.io/ios/app/source-audio-neuro-3/id968227110)

Control and customize Source Audio's One Series guitar and bass effects pedals. Download thousands of presets, create your own unique sounds, and share them with a vibrant community of musicians. Seamlessly manage your pedal's effects from your mobile device or desktop.

**Highlights:** Download stage-ready presets, Create personalized effects sounds, Manage personal preset library, Share sounds with the community, Intuitive user interface, Cross-platform integration

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💡 Innovative and versatile pedals
- 👍 Easy to use (for some)
- ✨ Unlocks pedal potential
- 🚀 Works well on desktop
- 🎶 Great sound quality

**What reviewers complain about**

- 🐛 Frequent connection issues
- 🐛 App crashes frequently
- 🐛 Unintuitive interface
- 🐛 Loss of precision in values
- 🐛 Old version missed

**Reported bugs**

- Settings not reflected in EQ2
- Won't connect to pedal even at max volume
- No connection with iPhone 11
- App kills battery and overheats phone
- Latest update broke app on iPad, crashes on open

**Requested features**

- Tutorials for guitar players on programming synthesizers
- Optimization improvements for the app
- More intuitive GUI
- Restore horizontal sliders and full 8-bit resolution
- Add USB connection option


## Frequently asked questions

### Is PolyTune free?

PolyTune costs $4.99, with no in-app purchases.

### Is Source Audio Neuro 3 free?

Source Audio Neuro 3 is free to download, with no in-app purchases.

### Which has better reviews, PolyTune or Source Audio Neuro 3?

Source Audio Neuro 3 is rated higher. PolyTune averages 2.8 out of 5 from 79 ratings, while Source Audio Neuro 3 averages 4.4 from 51 ratings.

### Do PolyTune or Source Audio Neuro 3 have ads?

Neither PolyTune nor Source Audio Neuro 3 shows ads.

### Which is updated more often, PolyTune or Source Audio Neuro 3?

PolyTune ships an update every 40 months, and Source Audio Neuro 3 every 4 weeks. Most recently, PolyTune was updated on September 28, 2026 and Source Audio Neuro 3 on September 23, 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.*