Flex Metronome vs DrPhos' Ionic Compounds
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flex Metronome
Create complex rhythm patterns like polyrhythms, swing, and ethnic grooves with this intuitive metronome app. Save your custom creations and utilize a library of editable presets for your musical needs.
- Create polyrhythms
- Implement swing rhythms
- Design ethnic grooves
- Support odd time signatures
- Save custom patterns
- Edit preset rhythms
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Flex Metronome is a flexible and easy-to-use app that lets you create a wide variety of rhythm patterns—such as polyrhythms, swing, ethnic grooves, and odd time signatures—with ease. You can save your custom patterns, and the app also includes a rich collection of editable preset rhythms.lex Metronome is a flexible and easy to use metronome app which enables you to make various kinds of rhythm patterns such as polyrhythm, swing, ethnic rhythm, unusual time signature, etc. very easily. You can save the rhythm pattern you created, and there are lots of preset rhythm patterns which you can edit and save. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
DrPhos' Ionic Compounds
This app helps students learn and practice forming correct chemical formulas for ionic compounds. It supports a wide range of ions, including polyatomic ones, and dynamically generates formulas with proper subscripts and parentheses. It's designed to reinforce naming rules and charge balancing through an interactive interface.
- Extensive cation and anion list
- Support for polyatomic ions
- Real-time formula generation
- Subscript and parenthesis formatting
- Reinforces naming rules
- Charge balancing practice
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Master Ionic Compounds with Ease The Ionic Compound Builder helps students learn and practice forming correct chemical formulas using a wide range of cations and anions—including polyatomic ions. Simply select a cation and an anion, and the app dynamically generates the proper formula with correct subscripts and parentheses. Designed for high school and college chemistry students, this tool reinforces naming rules and charge balancing through an intuitive, interactive interface. Features: • Extensive built-in list of common cations and anions • Support for monoatomic and polyatomic ions • Real-time chemical formula generation • Proper use of subscripts and parentheses • Visual formatting to emphasize structure and charge Whether you’re learning ionic bonding for the first time or reviewing for an exam, this tool is an essential companion for mastering chemical formulas.
Screenshots
Verdict
The clearest difference is price: Flex Metronome at Free against DrPhos' Ionic Compounds's $0.99. Flex Metronome also leads on iOS requirement (14.0 vs 17.0). DrPhos' Ionic Compounds's advantage is update cadence (every 3 weeks vs every 3 months) and ratings volume (8 vs 1). On rating, review sentiment, ads and in-app purchases 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
Flex Metronome is free to download; DrPhos' Ionic Compounds costs $0.99 up front. Flex Metronome sells 2 in-app purchases, starting at $0.99 per month and DrPhos' Ionic Compounds sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Flex Metronome against 4.9 for DrPhos' Ionic Compounds. That said, the two scores are not equally well evidenced: DrPhos' Ionic Compounds has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
Flex Metronome ships an update every 3 months, DrPhos' Ionic Compounds every 3 weeks. The most recent releases landed on November 11, 2026 and November 4, 2026 respectively.
| Parameter | Flex Metronome | DrPhos' Ionic Compounds |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (1 ratings) — better | 4.9 (8 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 8 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | YASUHIRO SEKINE | Monte L Helm |
Customer experience
Flex Metronome
DrPhos' Ionic Compounds
In-app purchases
Flex Metronome
- Premium Monthly$0.991 Month
- Premium Yearly$9.991 Year
DrPhos' Ionic Compounds
- Ionic Compound BuilderFree
- Science Calculator$0.99
- Significant Figures Counter$0.99
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- Quadratic Equation Solver$0.99
- Kinetics$0.99
- Naming Compounds$0.99
- Reaction Balancer$0.99
- Stoichiometry$0.99
- Solution Concentrations$0.99
- pH Calculator$0.99
Questions
Is Flex Metronome free?
Is DrPhos' Ionic Compounds free?
Which has better reviews, Flex Metronome or DrPhos' Ionic Compounds?
Do Flex Metronome or DrPhos' Ionic Compounds have ads?
Which is updated more often, Flex Metronome or DrPhos' Ionic Compounds?
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