Spiffy Clock vs CNVRT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spiffy Clock
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.
- 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
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Spiffy Clock puts the time and date front and center! It has 16 free colors that can be displayed as the background or as the text. An in-app purchase unlocks gradient backgrounds, gradient text, custom background and text colors, bi-color themes, gold, silver, and bronze, and rainbow coloring. Choose from numerous settings exactly how you want the time and date and day of the week displayed. When the color choice is for the background, the color will automatically change for light mode and dark mode, except when using custom colors. Works in both portrait and landscape mode. A night mode for use with dark mode allows you to display dark text in dark mode. Free color choices are: —Red —Orange —Yellow —Green —Mint —Cyan —Teal —Blue —Indigo —Purple —Pink —Brown —Black —Gray —White —System Paid color choices are: —Gradients —Gold —Silver —Bronze —Rainbow —Bi-color themes —Custom colors Time and date settings are: — Analog or digital clock —Show/hide seconds —Use 24 hour or 12 hour time with AM and PM —Show/hide date —Show/hide day of the week —Use numerical date You also can hide the status bar if you want. This app is a great complement to the desktop app Clock Suite. Similar colors are used, so there is a consistent look and feel across your devices.
CNVRT
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.
- Over 200 units supported
- 20 measurement categories
- Instant conversions
- Metric and Imperial units
- Optimized for Apple devices
- STEM and everyday use
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CNVRT allows you to convert any unit of measurement easily and instantly so you never have to do it yourself or struggle with metric and Imperial units. CNVRT supports over 200 different units and 20 different measurements, each with its own unique color. These measurements include: • Weight or Mass • Length or Distance • Temperature • Speed • Area • Time or Duration • Data Storage • Angle • … and many more! CNVRT is optimized for iPhone, iPad and macOS. Whether you are in STEM or just for everyday use, CNVRT will simplify your life.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Spiffy Clock | CNVRT |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 4.9 (12 ratings) — better | 4.5 (19 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 12 | 19 — better |
| Update frequency | Every 14 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthew Roberts | Pascal Andraos |
Customer experience
Spiffy Clock
CNVRT
In-app purchases
Spiffy Clock
- Spiffy Clock Pro$0.99
CNVRT
No in-app purchases









