# Notification Sounds Ringtones vs Duovigintuple Calc

The clearest difference is in-app purchases: Duovigintuple Calc at none against Notification Sounds Ringtones's 3. Duovigintuple Calc also leads on update cadence (every 2 weeks vs every 11 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Notification Sounds Ringtones sells 3 in-app purchases, starting at $2.99 per 7 days. Duovigintuple Calc asks for nothing beyond the download.

Notification Sounds Ringtones ships an update every 11 months, Duovigintuple Calc every 2 weeks. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Notification Sounds Ringtones | Duovigintuple Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (611 ratings)](https://appshunter.io/ios/app/notification-sounds-ringtones/id1065567365/reviews)** | — |
| Number of ratings | **611** | — |
| Positive reviews | 35.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 11 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 67 MB | 36 MB |
| Requires iOS | **15.0** | 15.8.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Reticode](https://appshunter.io/developer/980935644) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Notification Sounds Ringtones

[App page](https://appshunter.io/ios/app/notification-sounds-ringtones/id1065567365)

Discover and set a vast collection of free ringtones and notification sounds for your smartphone. Easily customize alerts for calls, messages, alarms, and specific contacts with categorized, high-quality audio.

**Highlights:** Set default ringtones, Custom notification sounds, Alarm sound customization, Specific contact tones, Categorized sound library, Bookmark favorite sounds, Constant updates with new sounds

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week Premium Access | $2.99 | per 7 days |
| Annual | $12.99 | per year |
| Remove Ads | $0.99 | one-time |

**What reviewers like**

- 🎵 Diverse library of notification sounds and ringtones
- 😂 Funny and entertaining sound collection
- 👍 Easy to use interface with good tutorial
- 💰 Free app with optional premium features
- 🎸 Quality sounds in specific categories (e.g., Musical instruments)

**What reviewers complain about**

- 📢 Excessive pop-up ads that interrupt user experience
- 🔊 Poor audio quality - sounds recorded poorly
- 💸 Misleading premium content behind paywall
- 🚫 App frequently crashes or becomes unresponsive
- ❌ Limited sound selection despite large claims

**Reported bugs**

- Category selection triggers constant ad loops
- App freezes when switching between categories
- Sound preview functionality not working
- Only 'funny' category accessible, others broken
- Ads prevent any app functionality for extended periods

**Requested features**

- Professional/business-appropriate notification sounds
- Search functionality for finding specific sounds
- Ability to preview sounds without ads
- Direct download to phone without computer requirement
- Better sound quality and recording standards


### Duovigintuple Calc

[App page](https://appshunter.io/ios/app/duovigintuple-calc/id6742525847)

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

**In-app purchases:** none


## Frequently asked questions

### Is Notification Sounds Ringtones free?

Notification Sounds Ringtones is free to download, with in-app purchases available.

### Is Duovigintuple Calc free?

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

### Do Notification Sounds Ringtones or Duovigintuple Calc have ads?

Both Notification Sounds Ringtones and Duovigintuple Calc show ads.

### Which is updated more often, Notification Sounds Ringtones or Duovigintuple Calc?

Notification Sounds Ringtones ships an update every 11 months, and Duovigintuple Calc every 2 weeks. Most recently, Notification Sounds Ringtones was updated on September 22, 2026 and Duovigintuple Calc on September 9, 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.*