CloudLogOffline vs Stamp Stack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CloudLogOffline
This app serves as a portable logbook for HAM radio operators, allowing them to record QSOs even without an internet connection. Logs can be uploaded to a self-hosted Cloudlog instance once connectivity is restored. It supports API uploads, QRZ.com queries, and integration with Flrig for radio interaction.
- Offline QSO logging
- Upload to Cloudlog instance
- QRZ.com query support
- Flrig integration
- Set CQ QRG
- Live and post QSOs
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CloudLogOffline is an app interface for Cloudlog the cloud logbook for HAM radio OMs and YLs by 2M0SQL et al. The main purpose of CloudLogOffline is the portable operating mode, where no Wifi or 3G/LTE is availabe, e.g. SOTA, IOTA, WWFF, POTA or COTA. The logs can be stored in the app and when back to an internet connection, the log can be uploaded to a selfhosted Cloudlog instance. Currently CloudLogOffline supports following features: - Upload to Cloudlog via API - Query QRZ.com (if 3G/LTE is available) - Connect to Flrig by W1HKJ which e.g. runs on a Raspberry Pi which is connected to the radio and opens a Wifi to interact with CloudLogOffline - Set a CQ QRG if Flrig is not available - Live and post QSOs - Many more
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: CloudLogOffline at Free against Stamp Stack's $3.99. Stamp Stack's advantage is iOS requirement (15.5 vs 17). 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
CloudLogOffline 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 | CloudLogOffline | Stamp Stack |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 3.0 (3 ratings) — better | — |
| Positive reviews | 81.8% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 6 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17 | 15.5 — better |
| Further details — not scored | ||
| Size | 41 MB | 82 MB |
| Age rating | 4+ | 4+ |
| Developer | Deutscher Amateur-Radio-Club e. V. | Daniel Goodwin |
In-app purchases
CloudLogOffline
No in-app purchases
Stamp Stack
No in-app purchases









