# Ops Clock vs Bel Canto Serioso

The clearest difference is review sentiment: Ops Clock at 100% against Bel Canto Serioso's 25%. Ops Clock also leads on price (Free vs $4.99) and rating (4.7 vs 3.7). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Ops Clock is free to download; Bel Canto Serioso costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Ops Clock holds the better App Store score, 4.7 against 3.7. Both are backed by a comparable volume of ratings — 11 and 3 respectively. Written reviews point the same way: 100% of Ops Clock's written reviews are positive against 25% of Bel Canto Serioso's.

Ops Clock ships an update every 5 months, Bel Canto Serioso every 31 months. The most recent releases landed on August 25, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Ops Clock | Bel Canto Serioso |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.7 (11 ratings)](https://appshunter.io/ios/app/ops-clock/id1352786229/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/bel-canto-serioso/id6447265295/reviews) |
| Number of ratings | **11** | 3 |
| Positive reviews | **100.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 31 months |
| Monetization | **Free** | Paid |
| Size | 2 MB | 3 MB |
| Requires iOS | **15.0** | 16 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [James Kretchmar](https://appshunter.io/developer/1352786228) | [Altug Basaran](https://appshunter.io/developer/1679429133) |

## What reviewers say

### Ops Clock

[App page](https://appshunter.io/ios/app/ops-clock/id1352786229)

A versatile utility app offering a world clock with over 400 cities, unlimited timers, and three powerful calculators for time zone, time, and date arithmetic. It also features an event log to track real-time occurrences and elapsed times.

**Highlights:** World clock with 400+ cities, Unlimited count-up and countdown timers, Time zone, time, and date calculators, Event log with elapsed time tracking, Customizable labels and notifications

**Features:** Vision Pro support

**In-app purchases:** none


### Bel Canto Serioso

[App page](https://appshunter.io/ios/app/bel-canto-serioso/id6447265295)

This voice training utility offers over 60 vocal exercises for ear training and solfege practice. Customize exercises by tonality, range, tempo, and interval span. Features manual and auto playback modes for flexible practice.

**Highlights:** 60+ vocal exercises, Customizable tonalities and ranges, Adjustable tempo (45-260 bpm), Filter exercises by interval and motion, Manual and auto player modes, Solfege system selection (English, Italian, Chromatic), Bookmarking for exercises

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

**In-app purchases:** none


## Frequently asked questions

### Is Ops Clock free?

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

### Is Bel Canto Serioso free?

Bel Canto Serioso costs $4.99, with no in-app purchases.

### Which has better reviews, Ops Clock or Bel Canto Serioso?

Ops Clock is rated higher. Ops Clock averages 4.7 out of 5 from 11 ratings, while Bel Canto Serioso averages 3.7 from 3 ratings.

### Do Ops Clock or Bel Canto Serioso have ads?

Neither Ops Clock nor Bel Canto Serioso shows ads.

### Which is updated more often, Ops Clock or Bel Canto Serioso?

Ops Clock ships an update every 5 months, and Bel Canto Serioso every 31 months. Most recently, Ops Clock was updated on August 25, 2026 and Bel Canto Serioso on September 10, 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.*