Comparison

Tuner؜ vs Nudion

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

Head to head
About

Tuner؜

This application provides precise instrument tuning capabilities. It assists musicians in achieving accurate pitches for their instruments.

Highlights
  • Precise instrument tuning
  • Achieve accurate pitches
  • Supports various instruments
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Tuner lets you tune your instruments with precision.

About

Nudion

Features
Read full description

Domina tu acordeón diatónico (31 botones) ¿Y si pudieras ver tu acordeón diatónico como un mapa? ¿Qué acordes puedes formar al cerrar o abrir el fuelle? Cada botón, cada escala-iluminados justo donde tienes que apretar. Nudion es eso: el atajo visual para entender tu instrumento de verdad. Acordes: Elige tónica y tipo (maj, min, 7, m7, sus2, dim, aug...) y mira los botones encenderse en cerrado y abierto. Tres modos para jugar: - Grados - el acorde por grados de la escala. - Todas las notas - todas sus posiciones en el diapasón. - Al revés - pulsa botones y Nudion te dice qué acorde formaste. Escalas: Mayor, menor, armónicas, melódicas, pentatónicas, etc. Las ves en cerrado y abierto a la vez, y con el Círculo armónico y sus acordes diatónicos listos para que los toques en tu acordeón. Intervalos: 3a, 6a, 8a y 10a en las tonalidades de tu acordeón, con sus modos de digitación. Tu atajo a la fluidez melódica. Transporte: Guarda tus canciones con sus acordes y muévelas a la tonalidad que tu acordeón toca de verdad. Nudion analiza la armonía por grados (I, IV, V, vi. . .), te dice si la nueva tonalidad cae cómoda en tu afinación o se sale, y te lleva a cada acorde en el diapasón. Esa canción imposible, ahora en tu tono. A tu medida: - Configura la afinación de tus tres hileras. - Modo espejo. - Notas o números, tú eliges. - Para iPhone y iPad. Sube de nivel: Lo que antes descubrías tocando durante meses, ahora lo ves de un vistazo. Improvisa con cabeza, transporta sin sudar, conecta melodía y armonía como siempre quisiste.

Screenshots

Tuner؜3 screens
Nudion4 screens

Verdict

The call

The clearest difference is price: Tuner؜ at Free against Nudion's $9.99. Nudion's advantage is update cadence (every 5 weeks vs every 14 months) and iOS requirement (18.4 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

CostPrice · In-app purchases · Ads · Monetization

Tuner؜ is free to download; Nudion costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Tuner؜ ships an update every 14 months, Nudion every 5 weeks. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 7 level
Tuner؜ versus Nudion: the parameters behind the verdict, then further details
ParameterTuner؜Nudion
PriceFree — better$9.99
Rating4.5 (217 ratings) — better—
Positive reviews51.6% of reviews—
Number of ratings217 — better—
Update frequencyEvery 14 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPad — better
Requires iOS26.018.4 — better
Further details — not scored
Size1 MB5 MB
Age rating4+4+
DeveloperJulian Boehm-TettelbachJorge Numa

Bugs and requests

Tuner؜

Reported bugs

4 issues
  • Advertisement for another app does not disappear even after download
  • App causes iPhone to crash or freeze
  • Screen freezes with blue spots
  • App causes phenomenal bugs, not recommended

Requested features

7 requests
  • Allow changing reference frequency (440, 442, baroque, etc.)
  • Option to select instrument (e.g., French horn)
  • Ability to switch between sharps and flats
  • Show octave of the note
  • Microtonal tuning options (24TET, cent modifier)
Show 2 more
  • Just intonation option
  • Option to turn off metronome app pop-up

Nudion

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Tuner؜

No in-app purchases

None

Nudion

No in-app purchases

Questions

Is Tuner؜ free?
Tuner؜ is free to download, with no in-app purchases.
Is Nudion free?
Nudion costs $9.99, with no in-app purchases.
Do Tuner؜ or Nudion have ads?
Neither Tuner؜ nor Nudion shows ads.
Which is updated more often, Tuner؜ or Nudion?
Tuner؜ ships an update every 14 months, and Nudion every 5 weeks. Most recently, Tuner؜ was updated on October 30, 2026 and Nudion on October 28, 2026.

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