# Sound Counting Detection vs Olyns

The clearest difference is price: Olyns at Free against Sound Counting Detection's $0.99. Olyns also leads on update cadence (every 5 weeks vs every 4 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Olyns is free to download; Sound Counting Detection costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sound Counting Detection ships an update every 4 months, Olyns every 5 weeks. The most recent releases landed on September 29, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Sound Counting Detection | Olyns |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[3.8 (406 ratings)](https://appshunter.io/ios/app/olyns/id1495789093/reviews)** |
| Number of ratings | — | **406** |
| Positive reviews | — | 20.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | — | Free |
| Size | 2 MB | 37 MB |
| Requires iOS | 13.0 | **12.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [方 沈](https://appshunter.io/developer/882296318) | [Olyns Inc](https://appshunter.io/developer/1495789092) |

## What reviewers say

### Sound Counting Detection

[App page](https://appshunter.io/ios/app/sound-counting-detection/id920363167)

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

**In-app purchases:** none


### Olyns

[App page](https://appshunter.io/ios/app/olyns/id1495789093)

This app facilitates recycling by connecting users to a network of bottle boxes. Users can find nearby recycling locations, deposit beverage containers, and earn cash rewards redeemable via PayPal. It aims to make recycling convenient and rewarding while contributing to environmental sustainability.

**Highlights:** Find nearby recycling locations, Deposit beverage containers, Earn cash rewards, Save Olyns card to phone wallet, Touchless check-in via phone, Cash out via PayPal

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none

**What reviewers like**

- 🚀 Convenient recycling
- 💰 Instant cash payouts
- 🌎 Eco-friendly service

**What reviewers complain about**

- 🚨 Machines frequently full or broken
- ⏱️ Slow and time-consuming process
- 🤔 Inaccurate app information
- 🔍 Limited machine locations

**Reported bugs**

- Login/account verification issues
- Inconsistent container recognition
- Machines freezing/malfunctioning

**Requested features**

- Ability to favorite/track specific machine locations
- Real-time machine status updates
- Increase glass bottle capacity
- Expand operating hours


## Frequently asked questions

### Is Sound Counting Detection free?

Sound Counting Detection costs $0.99, with no in-app purchases.

### Is Olyns free?

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

### Do Sound Counting Detection or Olyns have ads?

Neither Sound Counting Detection nor Olyns shows ads.

### Which is updated more often, Sound Counting Detection or Olyns?

Sound Counting Detection ships an update every 4 months, and Olyns every 5 weeks. Most recently, Sound Counting Detection was updated on September 29, 2026 and Olyns on October 16, 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.*