# Spiffy Clock vs CNVRT

The clearest difference is review sentiment: Spiffy Clock at 100% against CNVRT's 50%. Spiffy Clock also leads on price (Free vs $4.99) and rating (4.9 vs 4.5). CNVRT's advantage is in-app purchases (none vs 1) and update cadence (every 2 weeks vs every 14 months). On ratings volume and ads there is nothing between them.

Spiffy Clock is free to download; CNVRT costs $4.99 up front. Spiffy Clock sells 1 one-off in-app purchase. CNVRT asks for nothing beyond the download.

Spiffy Clock holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 12 and 19 respectively. Written reviews point the same way: 100% of Spiffy Clock's written reviews are positive against 50% of CNVRT's.

Spiffy Clock ships an update every 14 months, CNVRT every 2 weeks. The most recent releases landed on October 1, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Spiffy Clock | CNVRT |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.9 (12 ratings)](https://appshunter.io/ios/app/spiffy-clock/id1602707841/reviews)** | [4.5 (19 ratings)](https://appshunter.io/ios/app/cnvrt-si-unit-conversion-tool/id1607762263/reviews) |
| Number of ratings | 12 | **19** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 2 weeks** |
| Monetization | **Free** | Paid |
| Size | 4 MB | 1 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Matthew Roberts](https://appshunter.io/developer/1531519066) | [Pascal Andraos](https://appshunter.io/developer/1328885685) |

## What reviewers say

### Spiffy Clock

[App page](https://appshunter.io/ios/app/spiffy-clock/id1602707841)

Customize your device's time and date display with a variety of colors, gradients, and layout options. Tailor the appearance to your preference, including support for light and dark modes, and choose whether to show seconds, the day of the week, and more.

**Highlights:** 13 built-in background/text colors, Color gradient options, Customizable time and date display, Portrait and landscape mode support, Automatic light/dark mode color changes, Optional status bar hiding

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spiffy Clock Pro | $0.99 | one-time |


### CNVRT

[App page](https://appshunter.io/ios/app/cnvrt-si-unit-conversion-tool/id1607762263)

Instantly convert over 200 units across 20 measurement categories, from weight and length to temperature and data storage. This tool simplifies metric and Imperial conversions for STEM professionals and everyday users alike.

**Highlights:** Over 200 units supported, 20 measurement categories, Instant conversions, Metric and Imperial units, Optimized for Apple devices, STEM and everyday use

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Spiffy Clock free?

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

### Is CNVRT free?

CNVRT costs $4.99, with no in-app purchases.

### Which has better reviews, Spiffy Clock or CNVRT?

Spiffy Clock is rated higher. Spiffy Clock averages 4.9 out of 5 from 12 ratings, while CNVRT averages 4.5 from 19 ratings.

### Do Spiffy Clock or CNVRT have ads?

Neither Spiffy Clock nor CNVRT shows ads.

### Which is updated more often, Spiffy Clock or CNVRT?

Spiffy Clock ships an update every 14 months, and CNVRT every 2 weeks. Most recently, Spiffy Clock was updated on October 1, 2026 and CNVRT on October 8, 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.*