Comparison

NAIA vs Underlayer

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

Head to head
About

NAIA

Generate custom images using artificial intelligence. Describe your desired photo with detailed explanations, and the AI will create it for you in seconds.

Highlights
  • AI image generation
  • Detailed photo descriptions
  • Fast image creation
  • Customizable visuals
Features
Read full description

Create the picture you want with artificial intelligence. Detail your photo with extra explanations. Artificial intelligence will prepare the photo for you in seconds.

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/

Screenshots

NAIA4 screens
Underlayer4 screens

Verdict

The call

The clearest difference is in-app purchases: NAIA at none against Underlayer's 1. NAIA also leads on ads (none vs shown) and update cadence (every 4 days vs every 2 months). On price 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. Underlayer sells 1 in-app purchase, starting at $2.99 per 7 days. NAIA asks for nothing beyond the download.

UpkeepUpdate frequency

NAIA ships an update every 4 days, Underlayer every 2 months. Both last shipped on October 24, 2026.

Scorecard4 real differences · 6 level
NAIA versus Underlayer: the parameters behind the verdict, then further details
ParameterNAIAUnderlayer
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 4 days — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better16.4
Further details — not scored
Size28 MB180 MB
Age rating4+4+
DeveloperSINAR INISIYATIF TEKNOLOJI TURIZM TICARET ITHALAT VE IHRACAT LIMITED SIRKETIMihail Rukavishnikov

In-app purchases

None

NAIA

No in-app purchases

1 purchases

Underlayer

Subscriptions1
  • Premium$2.997 Days

Questions

Is NAIA free?
NAIA is free to download, with no in-app purchases.
Is Underlayer free?
Underlayer is free to download, with in-app purchases available.
Do NAIA or Underlayer have ads?
Underlayer shows ads; NAIA does not.
Which is updated more often, NAIA or Underlayer?
NAIA ships an update every 4 days, and Underlayer every 2 months. Most recently, NAIA was updated on October 24, 2026 and Underlayer on October 24, 2026.

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