Comparison

Double Exposure vs TUI Portfolio

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

Head to head
About

Double Exposure

Blend multiple photos into artistic, dreamlike images with this app. Capture new shots or use existing library photos. Offers free basic blending with optional Pro upgrades for higher resolution, advanced controls, and more blend modes.

Highlights
  • Blend photos from library or capture new
  • Control exposure and touch focus
  • Multiple blend modes (Pro)
  • Full resolution output (Pro)
  • ProRAW, TIFF, HEIF support (Pro)
  • Manual exposure and focus controls (Pro)
Features
Read full description

Double Exposure – Create Stunning Blended Photos Unleash your creativity with Double Exposure, the ultimate iPhone app for blending two or more photos into mesmerizing multiple exposure images. Capture and blend or combine photos from your library to craft artistic, dreamlike visuals with just a few taps. Free Features: - Capture and blend or combine photos from your library - Control exposure for perfect lighting - 4MP resolution with watermark - Touch focus for precise control - Save as JPEG Upgrade to Pro for Ultimate Control: - Full-Resolution (12MP) Output – Preserve every detail - ProRAW, TIFF & HEIF Support – Enhanced file formats for professional results - Full Manual Exposure & Focus Controls – Fine-tune your shot - Over 20 Blend Modes – Endless creative possibilities - White Balance & Tint Adjustments – Get the perfect color tone - Opacity Blending – Seamlessly merge images - Over a Dozen Preset Filters – Instantly enhance your photos Take your photography to the next level with Double Exposure. Download now and start creating!

About

TUI Portfolio

This app helps photographers organize their work with AI-powered bird recognition and cloud synchronization. It automatically extracts and manages EXIF data, and can generate a responsive web portfolio from your mobile collection.

Highlights
  • AI-powered bird recognition
  • Enterprise cloud synchronization
  • Advanced metadata management
  • Automated web portfolio generation
  • Intelligent caching
  • Batch processing
Features
Read full description

TUI (图忆) is a revolutionary iOS photography portfolio app that combines intelligent photo organization with cutting-edge technology for photographers of all levels. AI-Powered Bird Recognition TUI features an advanced bird species identification system with a comprehensive built-in reference database. The app automatically analyzes wildlife photography and accurately identifies bird species using optimized caching algorithms. When you capture birds, TUI instantly recognizes species and provides detailed information including names in multiple languages, scientific classifications, and descriptions. Enterprise Cloud Synchronization Built on Cloudflare infrastructure, TUI offers seamless cloud sync using R2 storage and Workers edge computing. Your entire portfolio, metadata, EXIF data, and bird identification results automatically sync across devices. Incremental sync technology transfers only new or modified data, reducing bandwidth and sync times. Data is secured with enterprise-grade encryption and global CDN distribution. Advanced Metadata Management TUI provides comprehensive EXIF metadata extraction and management. The app processes camera settings (aperture, shutter speed, ISO, focal length), GPS coordinates, timestamps, and device information. Location data includes reverse geocoding for human-readable place names. The metadata engine supports batch processing and validation for data integrity. Automated Web Portfolio Transform your mobile collection into a stunning web portfolio effortlessly. TUI generates responsive, modern galleries with masonry layouts, lightbox viewing, and advanced search. Portfolios include interactive world maps, timeline views, and filtering options. Websites are performance-optimized with static caching and progressive loading. Key Features Intelligent Caching: Multi-tier system for fast photo browsing Batch Processing: Efficient operations for large collections Memory Optimization: Smart management prevents crashes Background Sync: Non-blocking cloud synchronization Apple Sign In: Secure privacy-focused authentication Multi-Language: Chinese (Simplified/Traditional) and English support Timeline Views: Chronological browsing with date filtering Geographic Organization: GPS-based organization and mapping Equipment Tracking: Camera and lens usage statistics Star Rating: Professional photo rating system Backup & Restore: Complete portfolio backup functionality Perfect For Bird Watchers: Automatic species ID and birding statistics Travel Photographers: GPS organization and location tracking Professionals: Advanced metadata management and portfolios Students: Learning tool with technical information Content Creators: Easy sharing and web portfolio generation TUI represents the future of photography management, combining AI, cloud computing, and mobile technology to create an unparalleled experience that grows with your passion.

Screenshots

Double Exposure4 screens
TUI Portfolio4 screens

Verdict

The call

The clearest difference is in-app purchases: TUI Portfolio at none against Double Exposure's 3. TUI Portfolio also leads on review sentiment (100% vs 66%) and update cadence (weekly vs every 3 months). Double Exposure's advantage is iOS requirement (15.8.3 vs 17.0). On price, 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. Double Exposure sells 3 in-app purchases, starting at $1.99 per month. TUI Portfolio asks for nothing beyond the download.

UpkeepUpdate frequency

Double Exposure ships an update every 3 months, TUI Portfolio weekly. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

Scorecard5 real differences · 5 level
Double Exposure versus TUI Portfolio: the parameters behind the verdict, then further details
ParameterDouble ExposureTUI Portfolio
PriceFreeFree
Rating3.8 (29 ratings) — better—
Positive reviews66.5% of reviews100.0% of reviews — better
Number of ratings29 — better—
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.8.3 — better17.0
Further details — not scored
Size39 MB76 MB
Age rating4+4+
DeveloperAllez Interactive IncJames Zhen Yu

Customer experience

Double Exposure

All ratings28 ratings
Positive64.3%
Neutral10.7%
Negative25.0%
Written reviews164 reviews
Positive66.5%
Neutral7.9%
Negative25.6%

TUI Portfolio

Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Double Exposure

Reported bugs

5 issues
  • Crashes on launch
  • Freezes on login screen
  • Incompatible with older devices
  • Fails to restore purchases
  • Unable to open photos from library

Requested features

9 requests
  • Allow editing of existing photos
  • Add blend modes
  • Implement masking feature
  • Provide a tutorial or instructions
  • Add a delay timer for shutter
Show 4 more
  • Implement remote activation
  • Allow multiple exposures beyond two
  • Support for RAW format
  • Improve burst mode functionality

TUI Portfolio

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Double Exposure

Subscriptions2
  • PRO - Monthly$1.991 Month
  • PRO - Annual3 Days trial$11.991 Year
One-time1
  • PRO - One Time Purchase$35.99
None

TUI Portfolio

No in-app purchases

Questions

Is Double Exposure free?
Double Exposure is free to download, with in-app purchases available.
Is TUI Portfolio free?
TUI Portfolio is free to download, with no in-app purchases.
Do Double Exposure or TUI Portfolio have ads?
Neither Double Exposure nor TUI Portfolio shows ads.
Which is updated more often, Double Exposure or TUI Portfolio?
Double Exposure ships an update every 3 months, and TUI Portfolio weekly. Most recently, Double Exposure was updated on October 24, 2026 and TUI Portfolio on October 14, 2026.

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