Comparison

Opacity vs GelDoc Imager

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

Head to head
About

Opacity

Securely store and manage your digital identity, including logins and credentials. Prove facts about yourself without revealing sensitive data, and share verified information with full transparency. Maintain control over your online presence and reputation.

Highlights
  • Private, verified identity vault
  • Store logins and credentials
  • Prove identity facts without data exposure
  • Share verified information transparently
  • Connect and manage accounts
  • Build online reputation
Features
Read full description

Opacity is your passport to a user-owned internet. Store your digital identity — logins, credentials, and connected accounts — in a private, verified vault that only you control. Prove facts about your identity without exposing your data. Opacity lets you verify who you are and what you’ve done while keeping your information private and secure. Share what you want — instantly, with full transparency into what’s being shared and with whom. You stay in control, whether you’re connecting accounts, proving your credentials, or porting your reputation across the internet. How it works: • Add accounts like GitHub, Spotify, and more • Verify data (e.g. commit history, top 1% listener) • Share proof anywhere — no need to reveal your full profile Own your identity. Build your reputation. Stay private.

About

GelDoc Imager

This specialized camera app offers scientists and researchers precise manual controls for capturing high-quality images of gel electrophoresis. It features advanced settings for focus, ISO, shutter speed, and multiple lenses, along with real-time image processing and automatic metadata stamping.

Highlights
  • Manual focus with 3x zoom preview
  • Adjustable ISO (50-12800)
  • Customizable shutter speed (1/8000s to 30s)
  • Multiple lens support (ultra-wide, wide, telephoto)
  • Real-time contrast and saturation adjustment
  • Automatic metadata stamping
  • Settings persistence between sessions
Features
Read full description

GelDoc Imager is a specialized camera application designed for scientists and researchers who need precise control over gel electrophoresis imaging. Capture high-quality images of your gels with full manual camera controls and professional image processing tools. **Key Features:** **Manual Camera Controls** - Full manual focus control with 3x zoom preview for precise focusing - Adjustable ISO (50-12800) with automatic range detection per camera sensor - Customizable shutter speed (1/8000s to 30s) with logarithmic slider and long exposure presets - Exposure compensation (EV) for fine-tuning brightness - Tap-to-focus autofocus mode for quick focusing **Multiple Camera Lenses** - Switch between ultra-wide (0.5x), wide (1x), and telephoto (3x) lenses - Front and back camera support with easy flip button - Dynamic ISO and shutter speed ranges adapt to each camera sensor **Image Processing** - Real-time contrast adjustment (0.5x to 2.0x) - Saturation control (0.0 to 2.0x) for color enhancement - Color inversion for negative gel visualization - True black and white conversion - All adjustments apply in real-time to the live preview **Professional Workflow** - Automatic metadata stamping: All camera settings (ISO, shutter speed, exposure, focus, contrast, saturation) plus date and time are automatically stamped onto saved images - In-app gallery: View all photos taken with the app in a dedicated gallery - Full-screen photo viewer with pinch-to-zoom, swipe navigation, and smooth gestures - Photos saved directly to your device's photo library **Settings Persistence** - All camera settings automatically save and restore between sessions - Maintains lens selection, focus position, and all manual controls Perfect for molecular biology labs, research facilities, and anyone who needs precise control over gel documentation. Whether you're imaging DNA gels, protein gels, or other electrophoresis samples, GelDoc Imager gives you the tools you need for professional-quality documentation.

Screenshots

Opacity4 screens
GelDoc Imager1 screens

Verdict

The call

The clearest difference is update cadence: Opacity at every 2 weeks against GelDoc Imager's every 4 months. On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Opacity ships an update every 2 weeks, GelDoc Imager every 4 months. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

Scorecard1 real difference · 9 level
Opacity versus GelDoc Imager: the parameters behind the verdict, then further details
ParameterOpacityGelDoc Imager
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews—0.0% of reviews
Number of ratings3 — better—
Update frequencyEvery 2 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone
Requires iOS17.0 — better18.0
Further details — not scored
Size74 MB2 MB
Age rating4+4+
DeveloperOpacity LabsVincent Pennetti

Customer experience

Opacity

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

GelDoc Imager

Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

In-app purchases

None

Opacity

No in-app purchases

None

GelDoc Imager

No in-app purchases

Questions

Is Opacity free?
Opacity is free to download, with no in-app purchases.
Is GelDoc Imager free?
GelDoc Imager is free to download, with no in-app purchases.
Do Opacity or GelDoc Imager have ads?
Neither Opacity nor GelDoc Imager shows ads.
Which is updated more often, Opacity or GelDoc Imager?
Opacity ships an update every 2 weeks, and GelDoc Imager every 4 months. Most recently, Opacity was updated on October 3, 2026 and GelDoc Imager on October 7, 2026.

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