Comparison

WSPR watch vs Spool Tracker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

WSPR watch

This utility app provides ham radio operators with real-time WSPRnet and PSKreporter data. It displays who can hear you and offers detailed information for each spot. Users can also export data for further analysis.

Highlights
  • WSPRnet and PSKreporter data display
  • Real-time reception information
  • Detailed spot information
  • QRZ.com call sign lookup
  • Tab-delimited CSV export
Features
Read full description

Utility for ham radio users of WSPRnet. Quickly shows who can hear you and details of each spot. Tap a spot in the table to look up the call on QRZ.com. Export produces as tab delimited CSV file that can be sent to Numbers for sorting, filtering and graphing beyond what is in the app itself.

About

Spool Tracker

Features
Read full description

Know exactly how much filament you have — and what every print costs. Add your whole shelf in minutes, then stop guessing for good. SpoolVault is a filament inventory built for 3D printing. Weigh a spool, log a print, and you always know what's left, what it cost, and which printer or shelf it's sitting on. ADD YOUR WHOLE SHELF IN MINUTES Pick a brand and a material, tap every color you own, set how many of each, and save them all in one go. Then do the same for your next brand. Brands, materials and colors come preloaded for Bambu Lab, eSUN, Polymaker, Prusament, Hatchbox, Overture, Inland, Sunlu, Elegoo and BIQU. KNOW WHAT'S LEFT ON EVERY SPOOL Put a spool on any kitchen scale and enter the number. SpoolVault subtracts the empty spool's weight and tells you the filament remaining. Brand-specific spool weights are already built in, so it's a real figure, not a guess. KNOW WHAT EVERY PRINT COSTS Enter what you paid for a spool and SpoolVault works out the material cost of every print from the grams used — so you finally know what the thing you just made actually cost. KNOW WHERE EVERY SPOOL IS Assign spools to a printer, an AMS or multi-material slot, and a storage location — drybox, shelf, cupboard, wherever they really live. Then find any color in seconds. GROUP A BUILD INTO A PROJECT Multi-plate print? Group the plates under one named project and see total filament used, estimated material cost, and a full breakdown of every spool that went into it. Also in the app: • Opened and unopened spools, tracked separately • Full weight history for every spool, so you can watch it come down • Search, sort and filter your whole collection • Custom brands, colors and spool weights • Saved spool-weight defaults for the spools you reuse • Export a backup of your inventory any time • No account, no sign-in — your inventory lives on your device • Works offline, in the workshop, with no signal • No ads • Free for 30 days — no subscription starts, nothing to cancel Know what's on the shelf. Know what it cost. Get back to printing. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.spoolvault.com/privacy-policy.html

Screenshots

WSPR watch4 screens
Spool Tracker4 screens

Verdict

The call

The clearest difference is in-app purchases: WSPR watch at none against Spool Tracker's 2. Spool Tracker's advantage is iOS requirement (15.0 vs 17.6). On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Spool Tracker sells 2 in-app purchases, starting at $4.99 per month. WSPR watch asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
WSPR watch versus Spool Tracker: the parameters behind the verdict, then further details
ParameterWSPR watchSpool Tracker
PriceFreeFree
Rating4.8 (73 ratings) — better—
Positive reviews93.7% of reviews—
Number of ratings73 — better—
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.0 — better
Further details — not scored
Size8 MB36 MB
Age rating4+4+
DeveloperAccess InformaticsThree19 Pty Ltd

Bugs and requests

WSPR watch

Reported bugs

16 issues
  • Spot Info is jumbled in Portrait mode
  • Crashes sometimes
  • WSPRnet API hasn't worked for weeks for some users
  • WSPRnet itself not providing data for some users
  • PSK reporter doesn't work
Show 11 more
  • RBN doesn't work for some users
  • Hourly look back period obscured by keyboard on iPhone 5se
  • Color legend doesn't work as described
  • Duplicates in the spot list
  • Cannot get 10MHz results
  • Unclear what colored bars indicate
  • Doesn't load all spots for a band
  • Minimum DX distance not working for version 4
  • Hourly look back period obscured by keyboard on iPhone 5se
  • Color legend doesn't work as described
  • Duplicates in the spot list

Requested features

18 requests
  • Zoom out on map to see all spots
  • Add-on features
  • Ability to switch between local and UTC time
  • 24/12hr time format
  • Compare two callsigns
Show 13 more
  • Audio input for WSPR receive (decode on phone)
  • Monitor 2 or more bands at once
  • Quick way to change bands without going into settings
  • Time window slider on the map
  • Sorting by time, distance, etc. on list view
  • Partial callsign search
  • Satellite map view
  • Color legend for pins/lines
  • Duplicate spot removal
  • Support for 70cm and 23cm bands
  • Improved graph clarity
  • Option to change line color connecting Rx station to spot
  • Dark mode option

Spool Tracker

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

WSPR watch

No in-app purchases

2 purchases

Spool Tracker

Subscriptions2
  • SpoolVault Premium$4.991 Month
  • SpoolVault Premium$49.991 Year

Questions

Is WSPR watch free?
WSPR watch is free to download, with no in-app purchases.
Is Spool Tracker free?
Spool Tracker is free to download, with in-app purchases available.
Do WSPR watch or Spool Tracker have ads?
Neither WSPR watch nor Spool Tracker shows ads.
Which is updated more often, WSPR watch or Spool Tracker?
WSPR watch ships an update fortnightly, and Spool Tracker fortnightly. Most recently, WSPR watch was updated on November 1, 2026 and Spool Tracker on October 31, 2026.

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