App Overview

Nova Tuner icon

Nova Tuner

Thomas J Foster · Music

Written for professionals, especially those in the field of Early Music, Nova Tuner is a fully featured, accurate, chromatic tuner with extensive temperament support.

$7.99 · In-app purchases

PRICE
$7.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.7
31 ratings · Top 15%

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

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What's included17 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
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Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

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Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

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> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Nova Tuner: map the core Music workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Expand tuning features for more instruments and provide user-customizable options.

Assumption to check: Limited instrument support for tuning

Validate with people who use this workflow before building.

Hypothesis 2

Simplify the purchase process and provide clear value for premium features.

Assumption to check: In-app purchase confusion

Validate with people who use this workflow before building.

Hypothesis 3

Enable offline access for tuning features to improve user experience.

Assumption to check: Lack of offline functionality

Validate with people who use this workflow before building.

Hypothesis 4

Integrate social sharing to allow users to share their tunings or progress.

Assumption to check: No social sharing options

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

Written for professionals, especially those in the field of Early Music, Nova Tuner is a fully featured, accurate, chromatic tuner with extensive temperament support. A full demonstration of the app is on YouTube: https://youtu.be/egkAFaICdXY?si=peIM6QvGHLqXMqtD Nova Tuner was written by professional fortepianist and harpsichordist, Thomas Foster. MAIN FEATURES - Sound Mode (reference pitch) and Auto Mode (detect pitch) - Clean and simple interface - About 30 built-in temperaments (see www.thomasfoster.org/novatuner for full list) - Add/Create new temperaments. - Duplicate and edit built-in temperaments - Create profiles to quickly set pitch and temperament for frequently used settings. - A4 pitch detector to quickly determine an instrument's pitch level. - Quick selection of common pitch levels: 392, 415, 430, and 440 Hz (these are customizable). - Four waveforms for audible note: Sawtooth, Square, Triangle, Sine. - No data is collected, no internet connection is required. INTERFACE - All tuner information (pitch level, temperament, etc) clearly visible on main screen. - Standard, simple iOS appearance and controls. - Large and intuitive adjustment buttons (no fussy scroll wheels). - Light and dark mode. - Supports portrait and landscape orientations. - Note names in English, German, and Neo-Latin (do, re, mi) TEMPERAMENTS - Temperaments can be transposed - Add, duplicate and edit temperaments - Favorite frequently used temperaments - Filter by favorited and custom - Search entire list of temperaments by name or information (creator, type, year, etc.) - Hide unwanted temperaments so they don't appear in the list or search SPECIFICATIONS Transposition range: -11 to +11 semitones Detection range: A0 to C8 Reference tone: C2 to B7 Tuning modes: Sound, Auto, Auto with Sound Back Calibration range: A4=300-500 Hz, 0.1 Hz increments

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Screenshots

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