Metric Converters vs Reading Tool
Price, ratings, monetisation and update history for both apps, side by side — 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.
Reading Tool
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Reading Tool is a simple and focused app that helps you to create and share reading notes or quotes. - Crafted with system native design with Liquid Glass style. - Focused, easy to use. - You can sync your books and notes across multiple Apple devices (login with same Apple ID).
Screenshots
Verdict
The clearest difference is price: Reading Tool at Free against Metric Converters's $0.99. Reading Tool also leads on update cadence (every 5 days vs every 38 months). Metric Converters's advantage is iOS requirement (14.1 vs 26.0). On ads, in-app purchases and device support 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
Reading Tool is free to download; Metric Converters costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Metric Converters ships an update every 38 months, Reading Tool every 5 days. The most recent releases landed on October 23, 2026 and October 12, 2026 respectively.
| Parameter | Metric Converters | Reading Tool |
|---|---|---|
| Price | $0.99 | Free — better |
| Update frequency | Every 38 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.1 — better | 26.0 |
| Further details — not scored | ||
| Size | 20 MB | 4 MB |
| Age rating | +4 | 4+ |
| Developer | H Valeur | CreationAct (Shanghai) Technology Co., Ltd. |
In-app purchases
Metric Converters
No in-app purchases
Reading Tool
No in-app purchases
Questions
Is Metric Converters free?
Is Reading Tool free?
Do Metric Converters or Reading Tool have ads?
Which is updated more often, Metric Converters or Reading Tool?
Other comparisons
