# Wynd Sentry vs Grainwork

The clearest difference is rating: Grainwork at 5.0 against Wynd Sentry's 4.1. Grainwork also leads on review sentiment (100% vs 62%). Wynd Sentry's advantage is in-app purchases (none vs 2) and ratings volume (23 vs 7). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Grainwork sells 2 one-off in-app purchases. Wynd Sentry asks for nothing beyond the download.

Grainwork holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 23 and 7 respectively. Written reviews point the same way: 62% of Wynd Sentry's written reviews are positive against 100% of Grainwork's.

Wynd Sentry ships an update every 4 weeks, Grainwork every 3 weeks. The most recent releases landed on September 27, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Wynd Sentry | Grainwork |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (23 ratings)](https://appshunter.io/ios/app/wynd-sentry/id1638515401/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/grainwork/id6778949435/reviews)** |
| Number of ratings | **23** | 7 |
| Positive reviews | 61.5% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 44 MB | 57 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Wynd Technologies, Inc.](https://appshunter.io/developer/990113674) | [GRAINWORK LLC](https://appshunter.io/developer/1854543374) |

## What reviewers say

### Wynd Sentry

[App page](https://appshunter.io/ios/app/wynd-sentry/id1638515401)

This device detects cigarette, marijuana, and vape smoke, as well as loud parties in rental properties. Receive instant alerts for unwanted smoking, parties, and environmental issues. It offers powerful reporting to support reimbursement claims and notifies you of tampering.

**Highlights:** Detects cigarette, marijuana, and vape smoke, Monitors noise levels to prevent parties, Instant alerts for smoking and parties, Reporting for reimbursement claims, Tamper and disconnection notifications, High accuracy smoke detection (>99%)

**Features:** Vision Pro support

**In-app purchases:** none


### Grainwork

[App page](https://appshunter.io/ios/app/grainwork/id6778949435)

Get an independent estimate for home repairs from your own footage. Compare contractor quotes to ensure fairness and identify inflated costs. Keep a record of all your home repair assessments.

**Highlights:** Independent repair estimates from video/photos, Contractor quote comparison, Line-by-line cost breakdown, Home repair history record, Supports various repair types

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bid Check - Full Breakdown | $9.99 | one-time |
| Bid Check 3-Pack | $19.99 | one-time |


## Frequently asked questions

### Is Wynd Sentry free?

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

### Is Grainwork free?

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

### Which has better reviews, Wynd Sentry or Grainwork?

Grainwork is rated higher. Wynd Sentry averages 4.1 out of 5 from 23 ratings, while Grainwork averages 5.0 from 7 ratings.

### Do Wynd Sentry or Grainwork have ads?

Neither Wynd Sentry nor Grainwork shows ads.

### Which is updated more often, Wynd Sentry or Grainwork?

Wynd Sentry ships an update every 4 weeks, and Grainwork every 3 weeks. Most recently, Wynd Sentry was updated on September 27, 2026 and Grainwork on October 5, 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.*