# Rainbow's End Anchoring — Anchor & Rode Calculator

> Anchor & Rode Calculator (iPhone/iPad app by JERRY WAYNE SINONEAUX.)

- Source: https://appshunter.io/ios/app/rainbows-end-anchoring/id6803094783 (this page in markdown: same URL + `.md`)
- Developer: [JERRY WAYNE SINONEAUX](https://appshunter.io/developer/6803095146)
- Category: Navigation
- Price: $9.99
- Age rating: 4+
- Requires: iOS 16.4 · 45 MB
- Languages: American English
- Released: 2026-09-04
- Data updated: 2026-09-14
- User reviews in markdown: https://appshunter.io/ios/app/rainbows-end-anchoring/id6803094783/reviews.md

## What is Rainbow's End Anchoring?

May you find a rainbow’s end and treasure found wherever you sail or set your anchor — this calculator helps you choose the right anchor and rode setup for any condition.

Rainbow’s End Anchoring works out how much rode to pay out from what actually matters — the depth under you, the height of your bow roller, the tide, the wind, and the holding ground — then picks the best anchor and rode combination from the gear you actually carry, and says plainly when something will not work.

• Scope measured from the bow roller down, not the depth sounder alone
• Recommends from your own anchors and rodes — and warns when the locker cannot support the plan
• Regular anchoring, Bahamian moor, Med mooring, and lines ashore
• Storm mode with a two-anchor plan
• Gusts raise the scope and the peak loads
• Honest chain catenary: know the wind at which your chain pulls straight
• Swing circle, under-keel clearance at low water, and the deepest water your rode can take tonight
• Multiple boats — your own, a charter, the dinghy
• Feet, meters, fathoms, shots, or your own rode marks
• Works entirely offline. No account. Your boat’s details never leave your phone.

Built with real seamanship and honest about its limits: every figure is an estimate, and your judgment always outranks the app.

## Chart rankings

- #178 in Top Paid · Navigation (US App Store)


## Version history (last 2 releases)

### 1.5.0 — 2026-09-07

An anchor watch, a watch from ashore, and mooring balls.

The anchor watch. Mark the drop and Rainbow's End draws a fence from tonight's plan: the swing circle when you lie to one anchor, the corridor between two for a Bahamian moor, a tight ring for a boat held by a quay or by lines ashore. If the boat leaves the fence, the alarm sounds. The Watch tab shows the night live on a north-up plot: the fence true to shape, the boat as a moving dot, and the trail of everywhere she has ranged. The alarm waits for several fixes clearly outside the fence, so one wandering fix at three in the morning does not cry wolf. Keep the phone plugged in with the app open; if the GPS goes quiet, the screen says so.

The watch from ashore. Leave a device aboard on watch and any other device on your Apple ID can follow it, through your own iCloud, with an alarm if she breaks out or goes silent. Or share the watch with crew by an eight-character code: anyone with the code follows the boat in the free companion app, Rainbow's End Monitor, and its arrow points them back to her from the dinghy dock. Both are opt-in, and nothing is readable by anyone without your Apple ID or your code.

Mooring balls. A fifth way of lying, for the BVI and everywhere else you pick up a ball: the swing from the riser and pennant, the pennant length for your bow height, and a fence sized for a ball.

Also: the info button beside each figure explains the doctrine behind it, lengths follow your chosen unit everywhere, deletes ask twice, and every label was read again for plain American sailing English.

Location is used only for the watch, on your device, and leaves it only when you switch sharing on. If you never arm the watch, the app never asks for it.

### 1.1.1 — 2026-09-04

No release notes.

## More apps by JERRY WAYNE SINONEAUX

- [Rainbow's Arc Positioning](https://appshunter.io/ios/app/rainbows-arc-positioning/id6805648211)
- [Rainbow's End Manifest](https://appshunter.io/ios/app/rainbows-end-manifest/id6806850534)
- [Rainbow's End Provisioning](https://appshunter.io/ios/app/rainbows-end-provisioning/id6807222843)
- [Rainbow's End Float Plan](https://appshunter.io/ios/app/rainbows-end-float-plan/id6807546306)

All apps by JERRY WAYNE SINONEAUX: https://appshunter.io/developer/6803095146

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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 2026-09-14.*