# Level3D vs NAPA

The clearest difference is rating: Level3D at 5.0 against NAPA's 4.7. NAPA's advantage is update cadence (every 2 months vs every 7 months) and ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Level3D holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Level3D ships an update every 7 months, NAPA every 2 months. Both last shipped on September 7, 2026.

## The numbers

| Metric | Level3D | NAPA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/level3d/id1296669896/reviews)** | [4.7 (3 ratings)](https://appshunter.io/ios/app/napa-star-map/id6475964108/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 38 MB | 287 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [J2C Engineering LLC](https://appshunter.io/developer/1200273616) | [National Astronomical Research Institute of Thailand (Public Organization)](https://appshunter.io/developer/1725468782) |

## What reviewers say

### Level3D

[App page](https://appshunter.io/ios/app/level3d/id1296669896)

This utility app offers a suite of leveling tools, including bubble level, roof pitch, and grade measurement. It leverages an orientation device for advanced functions like dual bubble levels and beam distortion.

**Highlights:** Bubble Level, Roof Pitch, Grade Measurement, Cross Grade, Range of Motion Tracking, Dual Bubble Levels, Beam Distortion

**Features:** macOS Compatibility

**In-app purchases:** none


### NAPA

[App page](https://appshunter.io/ios/app/napa-star-map/id6475964108)

Explore the night sky with this astronomy and planetarium app. Identify stars, constellations, and planets by pointing your device at the sky. Plan future observations by adjusting the time and date.

**Highlights:** Point and observe celestial objects, Star map functionality, Time adjustment for observation planning, Simulate planet positions, Locate specific celestial objects, Real images of deep sky objects

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Level3D free?

Level3D is free to download, with no in-app purchases.

### Is NAPA free?

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

### Which has better reviews, Level3D or NAPA?

Level3D is rated higher. Level3D averages 5.0 out of 5 from 1 ratings, while NAPA averages 4.7 from 3 ratings.

### Do Level3D or NAPA have ads?

Neither Level3D nor NAPA shows ads.

### Which is updated more often, Level3D or NAPA?

Level3D ships an update every 7 months, and NAPA every 2 months. Most recently, Level3D was updated on September 7, 2026 and NAPA on September 7, 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.*