# Sonavault: Echo Descent — Map caverns through echo

> Map caverns through echo (iPhone/iPad app by Robert Corbin.)

- Source: https://appshunter.io/ios/app/sonavault-echo-descent/id6793303108 (this page in markdown: same URL + `.md`)
- Developer: [Robert Corbin](https://appshunter.io/developer/1890247992)
- Category: Games, Puzzle, Strategy
- Price: $2.99
- Age rating: 4+
- Requires: iOS 17.0 · 74 MB
- Released: 2026-07-26
- Data updated: 2026-08-18
- User reviews in markdown: https://appshunter.io/ios/app/sonavault-echo-descent/id6793303108/reviews.md

## What is Sonavault?

Sonavault is an offline echo-navigation puzzle campaign set in dark, fading cavern fields.

Pulse at meaningful moments, hold return geometry in memory, recover beacons, avoid moving obstructions, and choose a route before the field disappears. Sixty authored descents reward efficient coverage, controlled chains, and careful energy use.

Campaign stars and best scores stay on this device. The illustrated fieldbook provides an offline reference for pulse behavior, echo memory, obstructions, route planning, scoring, and the visual language of the caverns.

The new Echo Mapper lets you practice the core tradeoff. Adjust echo coverage and pulse reserve, introduce a moving obstruction, and watch route confidence respond. A deterministic daily blind-cavern survey supplies a shared date-based challenge without an account or server.

Sonavault includes local achievements, haptic and high-contrast preferences, reduced-effects controls, Dynamic Type, VoiceOver labels, and iPhone and iPad layouts.

Sonavault is an abstract puzzle game, not a navigation or safety instrument.

One paid download includes every descent and feature. There are no subscriptions, ads, in-app purchases, accounts, analytics SDKs, microphones, location access, or remote unlocks.


## Version history (last 2 releases)

### 1.1 — 2026-07-28

Sonavault 1.1 adds new survey tools:

- Added deterministic daily blind-cavern surveys with mastery constraints.
- Added the interactive Echo Mapper for echo coverage, pulse reserve, moving obstructions, and route-confidence feedback.
- Added local achievements and richer campaign progress.
- Added haptic, reduced-effects, high-contrast, and left-handed preferences.
- Improved compact-screen gameplay sizing.
- Expanded automated coverage for daily surveys, scoring, achievements, and persistence.

### 1.0 — 2026-07-26

No release notes.

## More apps by Robert Corbin

- [Daily Word Journey](https://appshunter.io/ios/app/daily-word-journey/id6761548266)
- [Hush Secret Text](https://appshunter.io/ios/app/hush-secret-text/id6761658175)
- [Renew Guard](https://appshunter.io/ios/app/renew-guard/id6761755447)
- [Receipt to PDF](https://appshunter.io/ios/app/receipt-to-pdf/id6761782025)
- [Route Your Pay](https://appshunter.io/ios/app/route-your-pay/id6761783719)
- [Tip Arbiter](https://appshunter.io/ios/app/tip-arbiter/id6761786879)

All apps by Robert Corbin: https://appshunter.io/developer/1890247992

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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 2026-08-18.*