Comparison

Greetings from Space vs CW Decoder

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

Head to head
About

Greetings from Space

Send dynamic 3D reactions in augmented reality through Messages. Express yourself with a library of hologlyphs that pop into the real world, offering a more immersive way to communicate than traditional GIFs or emojis.

Highlights
  • 3D augmented reality reactions (hologlyphs)
  • Library of diverse hologlyphs
  • Send directly through Messages
  • No app required for recipients (blue bubble)
  • Available on iPhone, iPad, and Apple Vision Pro
  • One-time purchase booster pack
Features
Read full description

Join the era of spatial messaging — with a library of 3D reactions for Messages. Like a GIF, emoji, or sticker, but in augmented reality. When the moment’s right, pop open Greetings From Space and find the perfect spatial reaction — we call them hologlyphs — from the dozens you’ll find in the app. Send it with a tap through Messages to your other friends with an iPhone. Wherever they are — at their desk, on the subway, the bathroom stall — it invades their physical space in augmented reality 3D with just a tap. You may be the GOAT of GIFS, you slay at emoji, and you’ve got your tapbacks, memes, and stickers on lock. But isn’t it all feeling a little… two-dimensional? Say it with a hologlyph. Send it like a GIF, but it pops into the real world in full 3D. Wield the perfect punchline with a library full of hologlyphs to choose from. Side-texting your work bestie while your boss’ lecture implodes? Drop in some “going off the rails” vibes with a runaway train. Partner checking in on your day after late-binging Severance? You’re “just phoning it in”… on a phone. From Happy Birthday to Marry Me, or just one massive eye roll, there’s a hologlyph for the moment. Dozens to choose from and more to come. Greetings From Space runs on iPhone, iPad, and Apple Vision Pro. Send a hologlyph and they open right in Messages, no app required on the other end — as long as they’re a blue bubble too. Get a handful for free. Then grab the booster pack for $1.99 to unlock over 50 more hologlyphs. One-time purchase. Family Sharing included.

About

CW Decoder

This application uses AI for high-accuracy Morse code decoding. It offers real-time signal processing for steady performance in noisy conditions. A free version allows for short decoding sessions, while a paid upgrade provides unlimited use and advanced features.

Highlights
  • AI-driven decoding
  • Real-time signal processing
  • Adjustable speed and thresholds
  • Decodes letters, numerals, and prosigns
  • Built-in microphone input
  • USB-C audio input (full version)
  • Scrollable decoded text
Features
Read full description

A high-accuracy Morse code decoder An AI model now drives the decoding, raising the hit rate on real on-air signals. Sample-by-sample signal processing keeps it steady in noise. Try the free version first and hear what it can pull out of the band. ■ Free version vs. Full Version The decoding engine itself is free for everyone to try. [Free version] • Each decoding session runs up to 2 minutes (restart as often as you like) • Standard font • Audio input from the built-in microphone only → Ideal for trying the app out or checking a short QSO. [Full Version (paid add-on)] • No time limit — built for long ragchews and for leaving it running while you monitor • Font settings — pick the typeface and size that read best for you • USB-C audio input — wire it straight to your rig and decode without the room getting in the way → Recommended if you want it on the desk for real operating, or a study setup you never have to babysit. ■ Features and technology (Real-time decoding) • Speed range: 5–50 WPM (speed and thresholds adjust themselves) • Detection range: 400 Hz – 900 Hz (locks onto the strongest signal) (What it decodes) • Letters, numerals and punctuation • Prosigns, and characters run together the way operators actually send them (Audio input: built-in microphone or USB-C) • Built-in microphone: no cable, nothing to set up. Point it at the speaker and go. • USB-C input (Full Version): connect any USB Audio Class device with a cable and it is recognised on the spot. No driver, no settings screen to find. • Plugging in switches the input over automatically; unplugging hands it back to the built-in microphone. • Taking audio straight from your rig's headphone output or an audio interface keeps conversation, traffic and household noise out of the decode. (Input source indicator) • The icon at the top left of the screen shows which input is in use at a glance: Microphone icon — the built-in microphone Connector icon — a USB-C device (shown in blue) • Plug or unplug the cable and the icon follows along on its own. • Connect a USB device before purchasing and a small lock appears. Tap it for details about the Full Version. • In landscape the icon moves to the button row at the bottom. (Signal processing) • Band-pass filter: a narrow window that cuts everything you did not tune for • AGC: tracks changes in signal strength and rides out fading • Noise blanker: removes spike noise using median absolute deviation • State stabilisation: multi-sample buffering so noise does not trip a false element ■ Built for operating, not just demos • Scrollable text, so anything you missed is still there to go back to • Locks firmly onto the 400 Hz – 900 Hz range where CW actually lives • A visual read-out that backs up what your ears are doing • A direct USB-C connection to the rig gives you the same steady copy in the shack or out portable ■ Who it is for (New to Morse) For anyone curious about Morse who is not sure where to start. Hearing it and reading it at the same time means you can check yourself as you go, which makes the learning stick far faster. (Licensed amateurs) • Practice: compare the decode against your own copy and find the characters you keep missing • Contests: a second pair of ears on fast CW, and a way to check a log entry • Portable: leave the laptop at home. A phone is the whole receiving setup. • Direct connection: over USB-C the copy stays solid even somewhere noisy (Returning and experienced operators) As a backstop for ears that are not what they were, or simply to make a long watch less tiring. Strong filtering keeps weak and crowded signals readable. Note: USB-C audio input requires a device with a USB-C port (iPhone 15 or later, USB-C iPad models) and a USB Audio Class compatible device. Note: Microphone access is used only to analyse the signal. Nothing is recorded, stored or transmitted. Audio arriving over USB-C uses the same permission.

Screenshots

Greetings from Space4 screens
CW Decoder3 screens

Verdict

The call

The clearest difference is rating: Greetings from Space at 5.0 against CW Decoder's 2.0. On price, ratings volume, update cadence and ads 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. Greetings from Space sells 1 one-off in-app purchase and CW Decoder sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Greetings from Space holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Greetings from Space ships an update daily, CW Decoder every 8 days. The most recent releases landed on October 6, 2026 and October 11, 2026 respectively.

Scorecard1 real difference · 9 level
Greetings from Space versus CW Decoder: the parameters behind the verdict, then further details
ParameterGreetings from SpaceCW Decoder
PriceFreeFree
Rating5.0 (1 ratings) — better2.0 (1 ratings)
Positive reviews—0.0% of reviews
Number of ratings11
Update frequencyDaily — betterEvery 8 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Vision Pro — betteriPhone, iPad
Requires iOS18.017.2 — better
Further details — not scored
Size68 MB12 MB
Age rating4+4+
DeveloperAndrew GriffinKeiya Chiba

Customer experience

Greetings from Space

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

CW Decoder

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

Greetings from Space

One-time1
  • Booster Pack$1.99
1 purchases

CW Decoder

One-time1
  • Unlock Full Version$2.99

Questions

Is Greetings from Space free?
Greetings from Space is free to download, with in-app purchases available.
Is CW Decoder free?
CW Decoder is free to download, with in-app purchases available.
Which has better reviews, Greetings from Space or CW Decoder?
Greetings from Space is rated higher. Greetings from Space averages 5.0 out of 5 from 1 ratings, while CW Decoder averages 2.0 from 1 ratings.
Do Greetings from Space or CW Decoder have ads?
Neither Greetings from Space nor CW Decoder shows ads.
Which is updated more often, Greetings from Space or CW Decoder?
Greetings from Space ships an update daily, and CW Decoder every 8 days. Most recently, Greetings from Space was updated on October 6, 2026 and CW Decoder on October 11, 2026.

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