# Nano SigmaPlus vs HearFind

The clearest difference is review sentiment: Nano SigmaPlus at 85% against HearFind's 24%. Nano SigmaPlus also leads on in-app purchases (none vs 1) and rating (4.0 vs 3.7). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. HearFind sells 1 one-off in-app purchase. Nano SigmaPlus asks for nothing beyond the download.

Nano SigmaPlus holds the better App Store score, 4.0 against 3.7. Both are backed by a comparable volume of ratings — 81 and 197 respectively. Written reviews point the same way: 85% of Nano SigmaPlus's written reviews are positive against 24% of HearFind's.

Nano SigmaPlus ships an update every 7 months, HearFind every 32 months. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Nano SigmaPlus | HearFind |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (81 ratings)](https://appshunter.io/ios/app/nano-sigmaplus/id1483291641/reviews)** | [3.7 (197 ratings)](https://appshunter.io/ios/app/hearfind/id1520443343/reviews) |
| Number of ratings | 81 | **197** |
| Positive reviews | **84.9% of reviews** | 24.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 32 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 70 MB | 24 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Xiamen NewSound Technology Co., Ltd.](https://appshunter.io/developer/1174641815) | [Tech Positive](https://appshunter.io/developer/580207852) |

## 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


### HearFind

[App page](https://appshunter.io/ios/app/hearfind/id1520443343)

Easily locate lost Bluetooth hearing aids with advanced tracking technology. The app displays nearby Bluetooth devices, their distance, and signal strength. Set up notifications to be alerted when your hearing aid is back in range, even when the app is closed.

**Highlights:** Locate lost Bluetooth hearing aids, Display nearby Bluetooth devices, Show device distance and signal strength, Graphical signal strength indicator, Out-of-range notifications, Track any Bluetooth hearing aid

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Unlock | $19.99 | one-time |

**What reviewers like**

- ✅ Found hearing aid quickly
- ✅ Accurate to inches
- ✅ Works well for some users
- ✅ Clever app
- ✅ Works as advertised

**What reviewers complain about**

- ❌ App doesn't work
- ❌ Waste of money
- ❌ Inaccurate distance readings
- ❌ Useless
- ❌ No instructions

**Reported bugs**

- App doesn't find hearing aid
- Keeps saying 35% away, even when found
- Blank list of nothing
- Not very accurate distance
- Shows incorrect distances (e.g., 52 feet when 2 feet away, 126 feet, 7000 feet)

**Requested features**

- Provide refunds for non-working app
- Offer free version to help those without extra money
- Include clear instructions
- Improve range detection
- Allow use without constant review prompts


## Frequently asked questions

### Is Nano SigmaPlus free?

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

### Is HearFind free?

HearFind is free to download, with in-app purchases available.

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

Nano SigmaPlus is rated higher. Nano SigmaPlus averages 4.0 out of 5 from 81 ratings, while HearFind averages 3.7 from 197 ratings.

### Do Nano SigmaPlus or HearFind have ads?

Neither Nano SigmaPlus nor HearFind shows ads.

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

Nano SigmaPlus ships an update every 7 months, and HearFind every 32 months. Most recently, Nano SigmaPlus was updated on October 24, 2026 and HearFind on October 22, 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.*