XDFLY vs Stamp Stack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
XDFLY
Connects to your device's Bluetooth to adjust ESC parameters, view data, and upgrade firmware. Offers a direct link for managing electronic speed controllers.
- Bluetooth ESC connection
- Parameter adjustment
- Data viewing
- Firmware upgrades
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XDFLY establishes a connection through the Bluetooth of the mobile phone and the Bluetooth of the ESC, so as to realize the functions of adjusting the parameters of the ESC, viewing the data, and upgrading the firmware.
Stamp Stack
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Keep your NFA collection organized with Stamp Stack - the secure, private way to track your Form 4 approvals and tax stamps. Key Features: - Scan Form 4 documents with automatic text extraction - Track pending submissions and approved stamps - Monitor wait times and approval dates - Organize items by type: suppressors, SBRs, SBS, AOW, machine guns, and more - Manage NFA trusts and associated items - Secure cloud backup with end-to-end encryption - Biometric lock (Face ID / Touch ID) and PIN protection - Import documents directly from email Your Data, Your Control: All data is encrypted on your device before syncing to the cloud. Only you can access your information - we can't see your items, documents, or personal details. Perfect for: - Suppressor owners tracking wait times - Collectors managing multiple NFA items - Trust owners organizing shared items - Anyone waiting on Form 4 approval
Screenshots
Verdict
The clearest difference is price: XDFLY at Free against Stamp Stack's $3.99. XDFLY also leads on iOS requirement (12.4 vs 15.5). On 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
XDFLY is free to download; Stamp Stack costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | XDFLY | Stamp Stack |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.4 — better | 15.5 |
| Further details — not scored | ||
| Size | 16 MB | 82 MB |
| Age rating | 4+ | 4+ |
| Developer | 鹏 杜 | Daniel Goodwin |
In-app purchases
XDFLY
No in-app purchases
Stamp Stack
No in-app purchases
