Comparison

Metric Converters vs ASTROTIMER

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Metric Converters

Features
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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.

About

ASTROTIMER

Features
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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

Metric Converters4 screens
ASTROTIMER4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences ยท 2 level
Metric Converters versus ASTROTIMER: the parameters behind the verdict, then further details
ParameterMetric ConvertersASTROTIMER
Price$0.99Free โ€” better
Update frequencyEvery 38 monthsEvery 6 days โ€” better
AdsNo โ€” betterYes
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.1 โ€” better15.0
Further details โ€” not scored
Size20 MB6 MB
Age rating+44+
DeveloperH ValeurTakashi Tsunoda

In-app purchases

None

Metric Converters

No in-app purchases

1 purchases

ASTROTIMER

One-time1
  • Remove Ads$0.99

Questions

Is Metric Converters free?
Metric Converters costs $0.99, with no in-app purchases.
Is ASTROTIMER free?
ASTROTIMER is free to download, with in-app purchases available.
Do Metric Converters or ASTROTIMER have ads?
ASTROTIMER shows ads; Metric Converters does not.
Which is updated more often, Metric Converters or ASTROTIMER?
Metric Converters ships an update every 38 months, and ASTROTIMER every 6 days. Most recently, Metric Converters was updated on November 3, 2026 and ASTROTIMER on October 31, 2026.

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