# QSpec vs Sentry Pass

The clearest difference is update cadence: Sentry Pass at every 2 months against QSpec's every 15 months. Sentry Pass also leads on iOS requirement (13.0 vs 18.0). On price, rating, ratings volume 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.

On the App Store both sit at effectively the same score — 4.0 for QSpec against 3.9 for Sentry Pass. Both are backed by a comparable volume of ratings — 6 and 7 respectively.

QSpec ships an update every 15 months, Sentry Pass every 2 months. The most recent releases landed on June 1, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | QSpec | Sentry Pass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (6 ratings)](https://appshunter.io/ios/app/qspec/id1155111447/reviews)** | [3.9 (7 ratings)](https://appshunter.io/ios/app/sentry-pass/id1530535386/reviews) |
| Number of ratings | 6 | **7** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 36 MB | 12 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Linde GmbH](https://appshunter.io/developer/657403417) | [Punch Technologies, Inc.](https://appshunter.io/developer/550378264) |

## What reviewers say

### QSpec

[App page](https://appshunter.io/ios/app/qspec/id1155111447)

This app helps manage gas cylinder inventory, track blend components, and monitor expiration dates for optimal process performance. It simplifies cylinder tracking and provides on-demand electronic Certificates of Analysis.

**Highlights:** Scan and store cylinder information, Track blend expiration dates, Set expiration alerts, Retrieve and email ECOAs, Create and email reorder lists, Assign cylinders to locations

**Features:** macOS Compatibility

**In-app purchases:** none


### Sentry Pass

[App page](https://appshunter.io/ios/app/sentry-pass/id1530535386)

This app simplifies community entry management by allowing users to submit daily surveys and photos for visual validation. It issues scannable QR code passes that expire nightly and tracks visits with check-in/check-out functionality. Detailed reports provide insights into entries and allow for pass revocation.

**Highlights:** Daily surveys, Photo submission for validation, Programmable QR code passes, Visit monitoring with check-in/out, Detailed reports and notifications, Pass revocation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is QSpec free?

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

### Is Sentry Pass free?

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

### Which has better reviews, QSpec or Sentry Pass?

QSpec is rated higher. QSpec averages 4.0 out of 5 from 6 ratings, while Sentry Pass averages 3.9 from 7 ratings.

### Do QSpec or Sentry Pass have ads?

Neither QSpec nor Sentry Pass shows ads.

### Which is updated more often, QSpec or Sentry Pass?

QSpec ships an update every 15 months, and Sentry Pass every 2 months. Most recently, QSpec was updated on June 1, 2026 and Sentry Pass on September 10, 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.*