# Digital Ruler vs HarborKeep

The clearest difference is rating: HarborKeep at 5.0 against Digital Ruler's 1.0. HarborKeep also leads on update cadence (every 9 days vs every 128 months). Digital Ruler's advantage is in-app purchases (none vs 1) and ratings volume (3 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. HarborKeep sells 1 one-off in-app purchase. Digital Ruler asks for nothing beyond the download.

HarborKeep holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Digital Ruler ships an update every 128 months, HarborKeep every 9 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Digital Ruler | HarborKeep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (3 ratings)](https://appshunter.io/ios/app/digital-ruler-pocket-measure/id1037588592/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/harborkeep/id6742726120/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 128 months | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 28 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nguyen Nam Giang](https://appshunter.io/developer/583763906) | [C. Ray Carroll LLC](https://appshunter.io/developer/1794874509) |

## What reviewers say

### Digital Ruler

[App page](https://appshunter.io/ios/app/digital-ruler-pocket-measure/id1037588592)

Measure small objects directly on your device's screen. Adjust the on-screen area to match the item's dimensions and get precise width, height, and diagonal measurements in centimeters or inches.

**Highlights:** Measure width, height, and diagonal, Supports centimeters and inches, Adjustable on-screen measurement area, Works on iPhone and iPad

**Features:** macOS Compatibility

**In-app purchases:** none


### HarborKeep

[App page](https://appshunter.io/ios/app/harborkeep/id6742726120)

Organize critical family information, including medical records, legal documents, and emergency contacts, in a secure private vault. Easily store notes, photos, and files, and access them quickly when needed. Information is protected on your device and can sync across Apple devices via iCloud.

**Highlights:** Private life vault, Family records organization, Emergency information storage, Medical notes and insurance details, Secure notes and login details, Attach documents and images, Sync across Apple devices via iCloud

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Secure Import & Export | $3.99 | one-time |


## Frequently asked questions

### Is Digital Ruler free?

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

### Is HarborKeep free?

HarborKeep is free to download, with in-app purchases available.

### Which has better reviews, Digital Ruler or HarborKeep?

HarborKeep is rated higher. Digital Ruler averages 1.0 out of 5 from 3 ratings, while HarborKeep averages 5.0 from 1 ratings.

### Do Digital Ruler or HarborKeep have ads?

Neither Digital Ruler nor HarborKeep shows ads.

### Which is updated more often, Digital Ruler or HarborKeep?

Digital Ruler ships an update every 128 months, and HarborKeep every 9 days. Most recently, Digital Ruler was updated on November 3, 2026 and HarborKeep on October 30, 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.*