# SurveyNotes vs SunArc

The clearest difference is update cadence: SurveyNotes at weekly against SunArc's every 3 weeks. SunArc's advantage is iOS requirement (16.4 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SurveyNotes ships an update weekly, SunArc every 3 weeks. The most recent releases landed on October 15, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | SurveyNotes | SunArc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/surveynotes/id6760939402/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free | — |
| Size | 2 MB | 50 MB |
| Requires iOS | 26.2 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nicholas VanderKlip](https://appshunter.io/developer/1886942045) | [Pascal von Burg](https://appshunter.io/developer/6797637525) |

## What reviewers say

### SurveyNotes

[App page](https://appshunter.io/ios/app/surveynotes/id6760939402)

This professional tool assists surveyors, engineers, and contractors with precise grade and elevation calculations in the field. It functions as a digital field book, recording instrument setups, benchmark elevations, and foresight shots with timestamps. Export your data as professional PDFs for easy sharing.

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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### SunArc

[App page](https://appshunter.io/ios/app/sunarc-sun-path-and-shade-check/id6797637523)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SurveyNotes free?

SurveyNotes is free to download, with no in-app purchases.

### Is SunArc free?

SunArc is free to download, with no in-app purchases.

### Do SurveyNotes or SunArc have ads?

Neither SurveyNotes nor SunArc shows ads.

### Which is updated more often, SurveyNotes or SunArc?

SurveyNotes ships an update weekly, and SunArc every 3 weeks. Most recently, SurveyNotes was updated on October 15, 2026 and SunArc on October 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*