# D1 System vs Krinkle Closeout

The clearest difference is iOS requirement: D1 System at 8.0 against Krinkle Closeout's 13.2. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on June 8, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | D1 System | Krinkle Closeout |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/krinkle-closeout/id1188803453/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | Free |
| Size | 6 MB | 59 MB |
| Requires iOS | **8.0** | 13.2 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [China Security & Fire IOT Sensing Co., Ltd.](https://appshunter.io/developer/914724038) | [Krinkle, LLC](https://appshunter.io/developer/1188803452) |

## What reviewers say

### D1 System

[App page](https://appshunter.io/ios/app/d1-system/id914724035)

This app allows users to remotely manage an SMS alarm system. It enables sending text messages for home protection, configuring alarm host parameters, and setting zone and RFID card names. Users can also manage SMS codes.

**Highlights:** Send SMS for home protection, Configure alarm host parameters, Set zone names, Set RFID card names, Manage SMS codes

**Features:** macOS Compatibility

**In-app purchases:** none


### Krinkle Closeout

[App page](https://appshunter.io/ios/app/krinkle-closeout/id1188803453)

Streamline wireless industry closeout packages with this enterprise-class software. Go paperless with customizable forms, capture diverse data on-site, and receive real-time feedback to eliminate return visits. Automate data processing for faster package completion.

**Highlights:** Paperless workflow with customizable forms, On-site data input (photos, components, signatures), Real-time QA feedback to reduce return visits, Automated data labeling and sorting, Real-time documentation uploads, GPS tracking with automatic time/date stamping, Unlimited support and maintenance

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

**In-app purchases:** none


## Frequently asked questions

### Is D1 System free?

D1 System is free to download, with no in-app purchases.

### Is Krinkle Closeout free?

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

### Do D1 System or Krinkle Closeout have ads?

Neither D1 System nor Krinkle Closeout shows ads.

### Which is updated more often, D1 System or Krinkle Closeout?

D1 System ships an update every 2 months, and Krinkle Closeout every 2 months. Most recently, D1 System was updated on June 8, 2026 and Krinkle Closeout on September 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.*