String Groove vs Gravity Math
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
String Groove
Learn to improvise on string instruments with this app. It offers written notation, listening examples, and play-along exercises across various musical styles. Designed for students, teachers, and professionals, it makes music theory practical and fun.
- Improvisation instruction for string players
- Multiple musical styles (Jazz, Rock, Blues, etc.)
- Support for Treble, Alto, and Bass clefs
- Play-along exercises
- Spoken instruction and listening examples
- Practical music theory integration
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String Groove ® teaches improvisation to string players through written notation, listening examples, play along exercises and spoken instruction to students. Musical styles: Jazz, Rock, Fiddle, Blues, Latin, Middle Eastern and more. Notation: Treble, Alto (viola) and Bass clef and works for all members of the string family. String Groove can work for other C instruments outside of the string family such as flute and bassoon. Audience: String students, teachers and professionals who want to learn how to improvise and teach improvisation. Recommended Level: Ability to play: Violin - Most notes in the first position Viola – Some notes in the 3rd position Cello - Some notes in the 5th position Other - Students not familiar with flats (or upper registers for viola and cello) can still work with String Groove if they limit themselves to familiar notes. String Groove is designed for the traditional string student and some music reading music is expected, however, it is possible to use String Groove entirely by ear. The Advanced sections consist of technical etudes, rhythmic and bowing exercises in the styles associated with each chapter. Throughout String Groove, Mr. Groove (or Mr. G) for short offers helpful ideas for improvising when selected. Music Theory is utilized in a practical and fun way. The basic sections introduce key signatures, chords and intervals. The advanced sections introduce jazz theory with the understanding that the user comprehends basic music theory. String Groove is ideal for music teachers who would like to teach improvisation to String Students. The App is an extension of the book and CD “String Groove, Ideas for Improvising” by Edgar Gabriel and is the result of his experience teaching improvisation workshops, courses and studio lessons. Compatible with iPad.
Gravity Math
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With this premium learning app you can practice math while playing a fun and simple mini-game. Gravity Math is powered by the most natural handwriting input and has a large selection of math facts from 1st to 6th grade with additional customization options. You can practice the following math skills: Addition: Addition up to 10 Addition up to 18 Add a number to a multiple of ten Add doubles Add three numbers up to 10 each Relate addition and subtraction Addition up to 20 Add a two-digit and a one-digit number Add two multiples of ten Add multiples of 10 or 100 Add two two-digit numbers Addition up to 100 Add two numbers up to three digits Add three numbers up to two digits each Add three numbers up to three digits each Add two numbers with four digits Complete the addition sentence up to three digits Balance addition equations up to two digits Subtraction: Subtraction facts - numbers up to 10 Subtraction facts - numbers up to 18 Subtract a multiple of ten Relate addition and subtraction Subtraction facts - numbers up to 20 Subtract a one-digit number from a two-digit number Subtract two two-digit numbers Subtract multiples of 10 Subtract multiples of 100 Subtract multiples of 10 or 100 Balance subtraction equations Subtraction facts - numbers up to 100 Subtract two three-digit numbers Complete the subtraction sentence up to three digits Subtract numbers with four or five digits Balance subtraction equations up to three digits Multiplication: Multiplication tables for 2, 3, 4, 5, 10" Multiplication tables for 6, 7, 8, 9 Multiply by a multiple of ten Multiplication facts up to 10×10 Multiplication facts up to 12×12 Multiply one-digit numbers by two-digit numbers Multiply one-digit numbers by three-digit numbers Multiply 1-digit numbers by 4-digit numbers Multiply 2-digit numbers by 2-digit numbers Multiply numbers ending in zeroes Multiply three numbers up to 10 each Division: Division facts for 2, 3, 4, 5, 10 Division facts for 6, 7, 8, 9 Division facts up to 10 Division facts up to 12 Divide two-digit numbers by one-digit numbers Divide three-digit numbers by one-digit numbers Divide three-digit numbers by two-digit numbers Divide four-digit numbers by one-digit numbers Divide four-digit numbers by two-digit numbers Divide numbers ending in zeroes by numbers up to 12 Decimals: Add decimal numbers Subtract decimal numbers Add three decimal numbers Convert decimals to fractions and mixed numbers Convert fractions and mixed numbers to decimals denominators of 10 and 100 Round decimals to the nearest whole number Round decimals to the nearest tenth Round decimals to the nearest hundredth Multiply a decimal by a power of ten Multiply a decimal by a one-digit whole number Multiply two decimal numbers Divide decimals by powers of ten Division with decimal quotients Divide decimals Convert fractions and mixed numbers to decimals Fractions: Add fractions with like denominators Subtract fractions with like denominators Add fractions with unlike denominators Subtract fractions with unlike denominators Add fractions with denominators of 10 and 100 Multiply fractions by one-digit whole numbers Multiply fractions by whole numbers Multiply two fractions Multiply a mixed number by a fraction Divide fractions by whole numbers Divide whole numbers by fractions Divide two fractions Write fractions in lowest terms Add fractions and mixed numbers with like denominators Add fractions and mixed numbers with unlike denominators Subtract fractions and mixed numbers with like denominators Subtract fractions and mixed numbers with unlike denominators Multiply fractions and mixed numbers Multiply mixed numbers and whole numbers Divide fractions and mixed numbers Divide mixed numbers by whole numbers Integers: Add integers Subtract integers Multiply integers Divide integers Add three integers Subtract three integers Multiply three integers
Screenshots
Verdict
The clearest difference is price: String Groove at Free against Gravity Math's $2.99. String Groove also leads on update cadence (every 3 months vs every 7 months). Gravity Math's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 14.0). On 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
String Groove is free to download; Gravity Math costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
String Groove ships an update every 3 months, Gravity Math every 7 months. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.
| Parameter | String Groove | Gravity Math |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 204 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | EDGAR GABRIEL | Sergey Malugin |
In-app purchases
String Groove
No in-app purchases
Gravity Math
No in-app purchases
Questions
Is String Groove free?
Is Gravity Math free?
Do String Groove or Gravity Math have ads?
Which is updated more often, String Groove or Gravity Math?
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