# Nano SigmaPlus vs Nano Audacity

The clearest difference is rating: Nano SigmaPlus at 4.0 against Nano Audacity's 3.3. Nano SigmaPlus also leads on ratings volume (82 vs 3) and iOS requirement (9.0 vs 13.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Nano SigmaPlus holds the better App Store score, 4.0 against 3.3. That said, the two scores are not equally well evidenced: Nano SigmaPlus has 82 ratings behind it against 3, so its average is the more settled of the two.

Nano SigmaPlus ships an update every 7 months, Nano Audacity every 14 months. The most recent releases landed on August 12, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Nano SigmaPlus | Nano Audacity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (82 ratings)](https://appshunter.io/ios/app/nano-sigmaplus/id1483291641/reviews)** | [3.3 (3 ratings)](https://appshunter.io/ios/app/nano-audacity/id6502619954/reviews) |
| Number of ratings | **82** | 3 |
| Positive reviews | 84.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 14 months |
| Monetization | Free | Free |
| Size | 70 MB | 4 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Xiamen NewSound Technology Co., Ltd.](https://appshunter.io/developer/1174641815) | [Xiamen Vienatone Medical Technology Co., Ltd](https://appshunter.io/developer/1124039917) |

## What reviewers say

### Nano SigmaPlus

[App page](https://appshunter.io/ios/app/nano-sigmaplus/id1483291641)

Connect and control your hearing aids with this application. Adjust volume, program modes, and band equalizers for a personalized listening experience.

**Highlights:** Connect to Nano Hearing Aids, Adjust Volume, Change Program Mode, Customize Band Equalizers, Personalized Hearing Experience

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use and navigate
- 🚀 Quick and easy Bluetooth connection
- 💡 Customizable volume and sound modes
- ✨ Simple and clean user interface
- 😊 Helpful for hearing loss

**What reviewers complain about**

- 📉 Removed/changed features
- 🔋 Battery life not as advertised
- 🎛️ Left and right adjustments sync
- 🚫 Cannot turn off hearing aids from app
- ❓ Manual doesn't match app features

**Reported bugs**

- App crashes
- Hearing aids stopped working
- Glitchy and unclear app

**Requested features**

- Restore hearing test feature
- Bring back charge level display
- Allow independent left/right adjustment
- Enable turning off hearing aids from app
- Add AirPods compatibility


### Nano Audacity

[App page](https://appshunter.io/ios/app/nano-audacity/id6502619954)

This utility app allows users to remotely control their hearing aids. Adjust volume, switch programs, fine-tune frequency bands, and manage feedback and noise reduction settings. It also provides battery power and connection status.

**Highlights:** Remote hearing aid control, Volume adjustment, Program switching, Frequency band gain adjustment, Feedback and noise reduction control, Battery and connection status check

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Nano SigmaPlus free?

Nano SigmaPlus is free to download, with no in-app purchases.

### Is Nano Audacity free?

Nano Audacity is free to download, with no in-app purchases.

### Which has better reviews, Nano SigmaPlus or Nano Audacity?

Nano SigmaPlus is rated higher. Nano SigmaPlus averages 4.0 out of 5 from 82 ratings, while Nano Audacity averages 3.3 from 3 ratings.

### Do Nano SigmaPlus or Nano Audacity have ads?

Neither Nano SigmaPlus nor Nano Audacity shows ads.

### Which is updated more often, Nano SigmaPlus or Nano Audacity?

Nano SigmaPlus ships an update every 7 months, and Nano Audacity every 14 months. Most recently, Nano SigmaPlus was updated on August 12, 2026 and Nano Audacity on September 19, 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.*