# Tonos — Tune Nervous System

> Tonos — Tune Nervous System (iPhone/iPad app by David Jacobson.)

- Source: https://appshunter.io/ios/app/tonos-tune-nervous-system/id6762630214 (this page in markdown: same URL + `.md`)
- Developer: [David Jacobson](https://appshunter.io/developer/1894891008)
- Category: Lifestyle, Education
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 69 MB
- Languages: English
- Released: 2026-04-22
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/tonos-tune-nervous-system/id6762630214/reviews.md

## What is Tonos?

Tonos teaches the seven Hermetic principles: mind, correspondence, vibration, polarity, rhythm, causation, and generation, through produced one- to two-minute sessions. Each teaching pairs a narrated thesis with a frequency-anchored musical bed, scene-specific Canvas visuals, and a distinct haptic cadence. The result is a lesson that lands in the body as well as the mind.

Around the canon are five larger surfaces:

• The Invitation: a 60-second cinematic opening that introduces the framework on first launch and can be replayed at any time.

• The Seven Shadows: a darker companion teaching for each principle — the loud mind, the false pattern, the restless body, the split self, the stuck current, the haunted cause, the transactional exchange — paired so the Seven becomes a fuller spine.

• The Symphony: a ten-minute journey through all seven principles in sequence, culminating in a lit heptagon finale.

• The Codex: a written book mode that extends each teaching with longer-form prose.

• The Measurements: science cards citing peer-reviewed work on the Schumann resonance, heart coherence, vagal tone, neuroplasticity, and the body's own biophotons. Educational, not clinical.

Tonos runs on iPhone and iPad, offline-first. There is no account, no network activity at runtime, and no tracking. The app is designed for daily tuning, a single minute between the noise, and it treats the user as intelligent rather than fragile.


## Version history (last 3 releases)

### 1.4.0 — 2026-05-04

The Lock Screen, tuned.

Walk The Reset or The Long Symphony and your phase, breath, and time ride along on the Lock Screen and Dynamic Island.

A new Path traces your pilgrimage — initiate to adept — across every teaching you walk. Your Chronicle keeps the private record. Codex chains connect each teaching to its longer-form essay. The Adept ceremony marks the moment you've walked all seven, twice over.

Quieter wins: the Library opens to your most recent walk, the sleep timer respects pause and seek, and a long-standing haptic race during The Reset has been retired.

Tune your nervous system.

### 1.0.2 — 2026-04-23

A new doorway. Every teaching now opens on a threshold — principle, duration, headphones hint — so you know what's coming before it begins. The session layer is simpler and more committed: six phase dots instead of scrubbable controls, pause that preserves position, no tap-to-advance. Each of the paired teachings now carries its own frequency-anchored musical bed — sixteen distinct sonic grounds across the library.

### 1.0 — 2026-04-22

No release notes.

## Related topics

[kybalion](https://appshunter.io/ios/topics/kybalion)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-17.*