Metric Converters vs ASTROTIMER
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Metric Converters
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This is the Converter Maniacs Mobile Metric Converter. It can convert between twenty different metric prefixes: Yotta, Zetta, Exa, Peta, Tera, Giga, Mega, Kilo, Hecto, Deka, Deci, Centi, Milli, Micro, Nano, Pico, Femto, Atto, Zepto, and Yocto. Not only can it convert between all of those prefixes, but it will also give you the formula and illustrate what you are converting with pictures. The app is fast, intuitive, and easy to use. It is a standalone app, which means that it will work perfectly fine in places with little or no Internet access. We hope this will become one of your favorite utility apps on your phone.
ASTROTIMER
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ASTROTIMER turns your countdown into a cosmic experience. Set your timer, and watch as asteroids fill the starry sky โ one for each minute. A glowing ball bounces between them, producing beautiful FM synthesis chimes with every collision. As each minute passes, a rock shatters into fragments, scattering across the screen. When time's up, a gentle chime melody lets you know. Features: Stunning real-time star chart background Physics-based ball and rock collisions FM synthesis chime sounds with delay and reverb Timer from 0:10 to 30:00 Remembers your last timer setting Works on iPhone and iPad
Screenshots
Verdict
The clearest difference is price: ASTROTIMER at Free against Metric Converters's $0.99. ASTROTIMER also leads on update cadence (every 6 days vs every 38 months). Metric Converters's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
ASTROTIMER is free to download; Metric Converters costs $0.99 up front. ASTROTIMER sells 1 one-off in-app purchase. Metric Converters asks for nothing beyond the download.
Metric Converters ships an update every 38 months, ASTROTIMER every 6 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Metric Converters | ASTROTIMER |
|---|---|---|
| Price | $0.99 | Free โ better |
| Update frequency | Every 38 months | Every 6 days โ better |
| Ads | No โ better | Yes |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.1 โ better | 15.0 |
| Further details โ not scored | ||
| Size | 20 MB | 6 MB |
| Age rating | +4 | 4+ |
| Developer | H Valeur | Takashi Tsunoda |
In-app purchases
Metric Converters
No in-app purchases
ASTROTIMER
- Remove Ads$0.99
Questions
Is Metric Converters free?
Is ASTROTIMER free?
Do Metric Converters or ASTROTIMER have ads?
Which is updated more often, Metric Converters or ASTROTIMER?
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