# NASA Battery Viewer vs Site Diary

The clearest difference is update cadence: Site Diary at weekly against NASA Battery Viewer's every 4 months. NASA Battery Viewer's advantage is review sentiment (100% vs 88%) and iOS requirement (11.3 vs 15.0). 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.

NASA Battery Viewer ships an update every 4 months, Site Diary weekly. Both last shipped on November 2, 2026.

## The numbers

| Metric | NASA Battery Viewer | Site Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (45 ratings)](https://appshunter.io/ios/app/site-diary-construction/id1453370618/reviews)** |
| Number of ratings | — | **45** |
| Positive reviews | **100.0% of reviews** | 87.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Free | Free |
| Size | 9 MB | 67 MB |
| Requires iOS | **11.3** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Neverest Limited](https://appshunter.io/developer/1360645388) | [Script&Go](https://appshunter.io/developer/963715575) |

## What reviewers say

### NASA Battery Viewer

[App page](https://appshunter.io/ios/app/nasa-battery-viewer/id1441904780)

Monitor battery information from a Bluetooth device with customizable display options. Configure units, view charging status, and rename your device for easy identification.

**Highlights:** Customizable display fields, Primary field selection, Charging/discharging indicator, Unit property configuration, Bluetooth LE communication, Automatic device connection, Unit renaming

**Features:** macOS Compatibility

**In-app purchases:** none


### Site Diary

[App page](https://appshunter.io/ios/app/site-diary-construction/id1453370618)

Streamline construction daily reporting with this app, replacing paper logs with digital entries for site progress, tasks, and resources. Capture real-time data, attach images, and access local weather reports, all while working offline.

**Highlights:** Real-time site progress monitoring, Integrated task management and allocation, Automatic local weather reports, Attach images to reports, Offline support and cloud synchronization, Export reports in PDF, Excel, or CSV

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

**In-app purchases:** none


## Frequently asked questions

### Is NASA Battery Viewer free?

NASA Battery Viewer is free to download, with no in-app purchases.

### Is Site Diary free?

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

### Do NASA Battery Viewer or Site Diary have ads?

Neither NASA Battery Viewer nor Site Diary shows ads.

### Which is updated more often, NASA Battery Viewer or Site Diary?

NASA Battery Viewer ships an update every 4 months, and Site Diary weekly. Most recently, NASA Battery Viewer was updated on November 2, 2026 and Site Diary on November 2, 2026.

---

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