Comparison

Underlayer vs Velora Pro

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

Head to head
About

Underlayer

Features
Read full description

UNDERLAYER - STEGANOGRAPHY MADE SIMPLE Transform ordinary images into secret carriers. Hide confidential messages invisibly within photos and share them through any messenger without raising suspicion. KEY FEATURES: HIDE SECRETS • Embed text messages invisibly into any image • Two encoding modes: Hidden (invisible pixels) and Open (colored frame) • Open mode survives messenger compression (Telegram, WhatsApp, etc.) • Share processed images directly or save to gallery REVEAL MESSAGES • Extract hidden text from steganographic images • Automatic detection of encoding method • Works with images received through messengers • Share intent support - open images directly from gallery WHY UNDERLAYER? • Simple & Intuitive - No cryptography knowledge required • Messenger-Friendly - Open mode designed for compressed sharing • Privacy First - All processing happens locally on your device • Universal - Works with JPG, PNG, WebP formats • No Account Required - Start using immediately USE CASES • Private communication through public channels • Watermarking images with hidden ownership data • Secure note-taking in plain sight • Educational tool for learning steganography • Fun way to send secret messages to friends SECURITY & PRIVACY • No internet connection required for processing • Your messages never leave your device • No data collection or tracking • Complete control over your secrets PREMIUM FEATURES • No banner ads at the bottom • No interstitial ad interruptions • Process unlimited images without ad breaks HOW IT WORKS 1. Select any image from your gallery 2. Enter your secret message 3. Choose encoding mode (Hidden or Open) 4. App embeds message into image pixels 5. Share through messengers or save locally 6. Recipient opens image in Underlayer to reveal message ENCODING MODES EXPLAINED HIDDEN MODE • Message embedded invisibly in image pixels • Completely undetectable to human eye • Best for uncompressed image sharing • Lost when image is compressed by messengers OPEN MODE • Message encoded as colored frame border • Visible as decorative edge around image • Survives Telegram, WhatsApp compression • Recommended for messenger sharing INTERNATIONAL • Available in English and Russian • More languages coming soon • Automatic language detection Whether you're a privacy enthusiast, security professional, or just curious about steganography - Underlayer makes it accessible to everyone. Download now and start hiding your secrets in plain sight! Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Velora Pro

Features
Read full description

Velora Pro turns your phone into a full car instrument cluster — a bright heads-up display, an OBD2 diagnostics scanner, a dashcam, and a garage logbook — all in one app that works entirely on your device. HEADS-UP DISPLAY Mount your phone and tap Start HUD for a crisp, glanceable landscape display: speed, heading, altitude, and your live trip route. Customize the glow color and intensity, dim it for night driving, and turn on windshield-reflect (mirror) mode to project onto the glass. Speed-limit alerts warn you when you go over. OBD2 DIAGNOSTICS Pair a compatible ELM327 Bluetooth adapter (sold separately) to read your car live: RPM, coolant temperature, engine load, throttle, intake, boost, and more. Scan and clear fault codes (DTCs) with plain-language descriptions, including manufacturer-specific definitions for your make. DASHCAM Loop-record the road ahead in the background, muted (no audio). The accelerometer auto-locks a clip on impact so it isn't overwritten. Footage stays in the app's private storage — never your photo library, never uploaded. GARAGE & MAINTENANCE Keep your vehicles with odometer, year, and plate, and set service reminders (oil, tires, brakes, inspection, and more) by distance or time. See at a glance what's due or overdue. TRIPS Review your last drive — distance, average and top speed, and the route on a map. PRIVATE BY DESIGN No account. No analytics. No ads. No tracking. Nothing is uploaded — your settings, garage, trips, and dashcam clips all stay on your device. The core heads-up display works on GPS alone, with no extra hardware. Drive smarter with Velora Pro. Note: OBD2 features require a compatible ELM327 Bluetooth adapter, which is not included. The heads-up display, dashcam, garage, and trips all work without any adapter.

Screenshots

Underlayer4 screens
Velora Pro4 screens

Verdict

The call

The clearest difference is price: Underlayer at Free against Velora Pro's $0.99. Velora Pro's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement 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

Underlayer is free to download; Velora Pro costs $0.99 up front. Underlayer sells 1 in-app purchase, starting at $2.99 per 7 days. Velora Pro asks for nothing beyond the download.

Scorecard3 real differences · 3 level
Underlayer versus Velora Pro: the parameters behind the verdict, then further details
ParameterUnderlayerVelora Pro
PriceFree — better$0.99
Update frequencyEvery 2 months—
AdsYesNo — better
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.415.1 — better
Further details — not scored
Size180 MB34 MB
Age rating4+4+
DeveloperMihail RukavishnikovTaha Cagri Men

In-app purchases

1 purchases

Underlayer

Subscriptions1
  • Premium$2.997 Days
None

Velora Pro

No in-app purchases

Questions

Is Underlayer free?
Underlayer is free to download, with in-app purchases available.
Is Velora Pro free?
Velora Pro costs $0.99, with no in-app purchases.
Do Underlayer or Velora Pro have ads?
Underlayer shows ads; Velora Pro does not.

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