D vs 自由客紧固件
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
D
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"Connect your scope and quickly set up various parameters through your phone. Detailed features are as follows: 1. Set parameters for your firearm, ammunition, distance, elevation angle, environment, etc. 2. Enter the ballistics table to quickly complete the scope setup. 3. Device firmware OTA (Over-The-Air) upgrade. 4. Firearm management, unit settings, distance calculation, unit conversion, etc."
自由客紧固件
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在自由客，您无需东奔西走，只需轻松点击，即可轻松选购到所需紧固件，省时省力更省心。我们平台汇集了各类高品质紧固件产品，种类繁多、规格齐全，满足不同行业和领域的需求。同时，我们注重用户体验，提供简洁明了的操作界面和流畅的购物流程，让您在采购过程中享受到极致的便捷和高效。选择自由客紧固件阳光采购平台，您将获得专业的产品推荐、优质的客户服务以及完善的售后保障，让您的采购之路更加顺畅无阻。立即加入我们，开启您的轻松采购之旅吧！
Screenshots
Verdict
The clearest difference is update cadence: 自由客紧固件 at every 2 weeks against D's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
D ships an update every 6 weeks, 自由客紧固件 every 2 weeks. The most recent releases landed on September 18, 2026 and May 13, 2026 respectively.
| Parameter | D | 自由客紧固件 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 32 MB | 80 MB |
| Age rating | 17+ | 12+ |
| Developer | Shenzhen DiscoveryOpt Technology Co., Ltd. | 帅 吕 |
In-app purchases
D
No in-app purchases
自由客紧固件
No in-app purchases
