Entonal Tuner vs Pentatone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Entonal Tuner
This app allows you to tune instruments to any imaginable scale, from perfect harmony to extreme dissonance. It accurately recreates global traditional music and can also function as a standard instrument tuner. Explore scales by playing their notes before tuning your instrument.
- Tune to any scale
- Explore scales by playing notes
- Adjust root note frequency
- Recreate traditional music
- Standard instrument tuner function
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Tune your instrument to any scale you can imagine. Perfect harmony, or super sharp dissonance, and everything in between. Accurately recreate traditional music from around the world, as well as pre-modern western music. Or use it as a standard instrument tuner! Each scale can be selected, and its notes can be played to get a feel for it before tuning your instrument. Each scale may have a different root note (1/1), and the root note frequency (1/1) can be adjusted while tuning. Entonal Tuner was created when the developer began to learn about Just Intonation and microtonal music. He soon found that it, although some tuning apps support different temperaments and scales, they are difficult to edit, and not a "first class citizen". So the seed was planted... and Entonal Tuner was born.
Pentatone
This music app offers a unique pentatonic keyboard and built-in synthesizer, inspired by instruments like the kora and mbira. It features a sophisticated scale selection system and is optimized for touchscreen devices, providing an expressive and easy-to-play musical experience.
- Easy-to-play 'strummable' pentatonic keyboard
- 9 selectable pentatonic scales
- Custom FM synthesizer engine
- 25 preset sounds with macro controls
- Polyphonic touch and aftertouch response
- AUv3 functionality for host apps
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"Beautiful, fun and inspiringly expressive" - The Arithmophone Pentatone is a music app featuring an easy to play pentatonic keyboard and a built-in synthesizer. Instead of using piano keys or a grid-based interface, Pentatone takes a fresh approach, optimised for the ergonomics of touchscreen devices and inspired by instruments like the kora and mbira. The app also has a sophisticated scale selection system that includes all the common pentatonic scale types and unlocks some more unusual ones. Pentatone features: - An easy-to-play and 'strummable' keyboard, split for two handed playing - An original pentatonic scale system with 9 selectable scales, in just intonation or standard tuning - A custom synth engine (binaural 2x2 op FM with stereo detune, resonant filter, delay and reverb) - 25 preset sounds with macro sliders for tone and ambience - Initial touch and aftertouch response, both polyphonic - AUv3 functionality for use within host apps like GarageBand, Koala Sampler and Loopy Pro Pentatone user feedback: "Amazing! Love the simple UI and the musical keyboard. Also the sounds are lovely!" "This is very cool - beautiful interface and instantly musical." "This really is a joy to play and the tones are really expressive in fun ways that invite different types of creativity." "This app is such a brilliant idea!" "This is amazing. So fun to play. So easy to play with my daughter and my niece. The tones are wonderful." "This is an inspiringly expressive instrument! Really a joy to interact with." "This thing is AWESOME! It’s so easy to make up new stuff with it!" *** Pentatone is part of the Arithmophone project An Arithmophone is a thing that turns numbers into sounds, or math into music. Its name is derived from the ancient Greek words arithmos (number) and phone (sound). Any iPhone or iPad is itself an Arithmophone, because it routinely turns lists of binary numbers into sounds, for example when you use it to listen to music. But this app is a bit more 'arithmophonic' still, because it takes pure and simple harmonic ratios like 3:2 and 5:4 and uses these to build musical scales. You can use it as an easy-to-play instrument, a source of melodic and harmonic inspiration or a tool for learning about music and exploring the deep connection it has with numbers. Keep an eye out, future plans for the Arithmophone on iOS include: - PENTATONE JR., a simplified and text-free version of Pentatone, optimized for young/beginning musicians - DIATONE, the diatonic companion to Pentatone, featuring a 7-note-per-octave keyboard with all the familiar major and minor scales and modes - MIDI / MPE versions of Pentatone and Diatone - TONEHIVE, a microtonal keyboard synth for 7 limit just intonation - HUYGENS, a microtonal keyboard synth for 31 EDO To stay posted, join the community at reddit.com/r/arithmophone or subscribe to the Arithmophone youtube channel: https://www.youtube.com/@arithmophone
Screenshots
Verdict
The clearest difference is rating: Pentatone at 5.0 against Entonal Tuner's 4.3. Pentatone also leads on in-app purchases (none vs 1) and review sentiment (100% vs 86%). Entonal Tuner's advantage is update cadence (every 3 days vs every 5 weeks) and iOS requirement (12.0 vs 15.6). On price, ratings volume, ads 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
Both are free to download. Entonal Tuner sells 1 one-off in-app purchase. Pentatone asks for nothing beyond the download.
Pentatone holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 14 and 15 respectively. Written reviews point the same way: 86% of Entonal Tuner's written reviews are positive against 100% of Pentatone's.
Entonal Tuner ships an update every 3 days, Pentatone every 5 weeks. Both last shipped on October 24, 2026.
| Parameter | Entonal Tuner | Pentatone |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (14 ratings) | 5.0 (15 ratings) — better |
| Positive reviews | 85.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 14 | 15 — better |
| Update frequency | Every 3 days — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 17 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Node Audio | Chiel Zwinkels |
Customer experience
Entonal Tuner
Pentatone
In-app purchases
Entonal Tuner
- Upgrade to Pro$3.99
Pentatone
No in-app purchases








