# SurveyNotes — Grade and Elevation Calculator

> Professional differential leveling calculator and field book for surveyors and engineers. (iPhone/iPad app by Nicholas VanderKlip.)

- Source: https://appshunter.io/ios/app/surveynotes/id6760939402 (this page in markdown: same URL + `.md`)
- Developer: [Nicholas VanderKlip](https://appshunter.io/developer/1886942045)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 26.2 · 2 MB
- Languages: American English
- Released: 2026-03-24
- Data updated: 2026-08-18
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/surveynotes/id6760939402/reviews.md

## What is SurveyNotes?

SurveyNotes is a professional differential leveling tool built for surveyors, engineers, and contractors who need a reliable field book in their pocket.

Set up your instrument in seconds. Enter your benchmark elevation and backsight rod reading and SurveyNotes instantly calculates your Height of Instrument. From there, enter any desired elevation and get the exact rod reading you need to hit grade.

FIELD BOOK RECORDING
Every shot you record is saved to a session-based field book — organized by instrument setup, exactly the way a real level book works. Each session stores your benchmark, backsight, HI, and every foresight shot with notes and timestamps.

PROFESSIONAL PDF EXPORT
Export any session as a clean, print-ready PDF formatted like a traditional differential leveling field book. Share it by email or AirDrop directly from the app.

BUILT FOR THE FIELD
• Works completely offline — no account, no internet required
• Dark mode interface easy on the eyes in all lighting conditions
• Custom measurement keyboard supporting decimal feet, feet-inches, and fractions to the nearest 1/16"
• Sessions are saved automatically and available across app launches

SURVEYING TERMINOLOGY
SurveyNotes uses standard differential leveling terminology — Benchmark (BM), Backsight (BS), Height of Instrument (HI), and Foresight (FS) — so it fits naturally into any professional workflow.

All data is stored locally on your device and never transmitted anywhere.

## Key features

- Differential leveling calculations
- Instrument setup in seconds
- Session-based field book recording
- Professional PDF export
- Offline functionality
- Custom measurement keyboard
- Dark mode interface


## Frequently asked questions about SurveyNotes

### What is SurveyNotes used for?

SurveyNotes is a professional differential leveling tool designed for surveyors, engineers, and contractors. It helps calculate grades and elevations accurately in the field, functioning as a digital field book.

### Does SurveyNotes work offline?

Yes, SurveyNotes works completely offline. It does not require an account or internet connection, making it reliable for use in any field condition.

### How does SurveyNotes record data?

Every shot recorded in SurveyNotes is saved to a session-based field book, organized by instrument setup. This includes benchmark, backsight, height of instrument, and foresight shots with notes and timestamps.

### Can I export my data from SurveyNotes?

Yes, you can export any session from SurveyNotes as a professional, print-ready PDF. This PDF is formatted like a traditional differential leveling field book and can be shared via email or AirDrop.

### What measurement units does SurveyNotes support?

SurveyNotes features a custom measurement keyboard that supports decimal feet, feet-inches, and fractions up to the nearest 1/16".

### Is SurveyNotes suitable for beginners?

SurveyNotes uses standard differential leveling terminology (Benchmark, Backsight, Height of Instrument, Foresight), which fits naturally into professional workflows. While powerful, users familiar with these terms will find it most intuitive.

### How often is SurveyNotes updated?

The latest version of SurveyNotes is 1.1, which was last updated on March 30, 2026. This indicates a recent update, suggesting active development and maintenance.

### What devices is SurveyNotes available on?

SurveyNotes is available on iPhone and iPad devices, offering a versatile solution for mobile professionals.

## Version history (last 2 releases)

### 1.1 — 2026-03-30

New splash screen and app icon. Added top tab navigation with Calculator, As-Built, and Field Panel tabs. Design Library and Field Book now support swipe to delete and rename. New Field Panel Tab shows horizontal math breakdown (HI − Target = Rod).

### 1.0 — 2026-03-24

No release notes.

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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.*