# Papertrail.io vs ECHO Lock

The clearest difference is rating: ECHO Lock at 5.0 against Papertrail.io's 2.3. ECHO Lock also leads on monetization model (free vs free with in-app purchases). Papertrail.io's advantage is ratings volume (3 vs 1). On price, review sentiment, update cadence and ads there is nothing between them.

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

ECHO Lock holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Papertrail.io ships an update every 3 weeks, ECHO Lock every 2 weeks. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Papertrail.io | ECHO Lock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/papertrailio/id1148113321/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/echo-lock/id6741067047/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 69 MB | 54 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kit Log Ltd](https://appshunter.io/developer/1016424069) | [LOWE AND FLETCHER LIMITED](https://appshunter.io/developer/1792842721) |

## What reviewers say

### Papertrail.io

[App page](https://appshunter.io/ios/app/papertrailio/id1148113321)

Streamline workplace safety and compliance with digital inspections, asset tracking, and automated task management. This platform provides tools for businesses to manage personnel, assets, and premises, ensuring audit readiness and operational efficiency.

**Highlights:** Create customisable inspections and checklists, Full scanning suite (NFC, RFID, Barcode, QR), Automate reminders and tasks, Maintain clear audit trails, Work offline with automatic synchronization, Optimise team management and permissions, Ensure data security and compliance

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

**In-app purchases:** none


### ECHO Lock

[App page](https://appshunter.io/ios/app/echo-lock/id6741067047)

This app enables battery-free locking and unlocking of smart locks using NFC technology on your smartphone. It offers a keyless and maintenance-free access solution, requiring compatible smart locks to function.

**Highlights:** Battery-free smart lock operation, NFC-powered smartphone unlocking, Keyless access solution, Smartphone tap to lock/unlock, Maintenance-free system

**In-app purchases:** none


## Frequently asked questions

### Is Papertrail.io free?

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

### Is ECHO Lock free?

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

### Which has better reviews, Papertrail.io or ECHO Lock?

ECHO Lock is rated higher. Papertrail.io averages 2.3 out of 5 from 3 ratings, while ECHO Lock averages 5.0 from 1 ratings.

### Do Papertrail.io or ECHO Lock have ads?

Neither Papertrail.io nor ECHO Lock shows ads.

### Which is updated more often, Papertrail.io or ECHO Lock?

Papertrail.io ships an update every 3 weeks, and ECHO Lock every 2 weeks. Most recently, Papertrail.io was updated on October 7, 2026 and ECHO Lock on October 4, 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.*