# Nano SigmaPlus vs HA

The clearest difference is review sentiment: Nano SigmaPlus at 85% against HA's 10%. Nano SigmaPlus also leads on rating (4.0 vs 2.6) and iOS requirement (9.0 vs 13.0). HA's advantage is update cadence (every 6 weeks vs every 7 months). On price, ratings volume, 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 2.6. Both are backed by a comparable volume of ratings — 81 and 35 respectively. Written reviews point the same way: 85% of Nano SigmaPlus's written reviews are positive against 10% of HA's.

Nano SigmaPlus ships an update every 7 months, HA every 6 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Nano SigmaPlus | HA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (81 ratings)](https://appshunter.io/ios/app/nano-sigmaplus/id1483291641/reviews)** | [2.6 (35 ratings)](https://appshunter.io/ios/app/ha-fit/id1618179282/reviews) |
| Number of ratings | **81** | 35 |
| Positive reviews | **84.9% of reviews** | 10.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 70 MB | 4 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Xiamen NewSound Technology Co., Ltd.](https://appshunter.io/developer/1174641815) | [KOOMA INTERNATIONAL TRADING, LLC](https://appshunter.io/developer/1784840025) |

## 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


### HA

[App page](https://appshunter.io/ios/app/ha-fit/id1618179282)

Remotely control your hearing aids with this application. Adjust volume, switch programs, and fine-tune settings like gain and noise reduction. Monitor battery life and connection status for seamless operation.

**Highlights:** Remote hearing aid control, Volume adjustment, Program switching, Gain adjustment, Feedback and noise reduction control, Battery status check, 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 HA free?

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

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

Nano SigmaPlus is rated higher. Nano SigmaPlus averages 4.0 out of 5 from 81 ratings, while HA averages 2.6 from 35 ratings.

### Do Nano SigmaPlus or HA have ads?

Neither Nano SigmaPlus nor HA shows ads.

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

Nano SigmaPlus ships an update every 7 months, and HA every 6 weeks. Most recently, Nano SigmaPlus was updated on November 3, 2026 and HA on November 3, 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.*