Comparison

Stackd vs Underexpo

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

Head to head
About

Stackd

Easily share and save multiple photos with friends and family. Upload images to create a shareable stack, and recipients can swipe right to save or left to discard. Saved images are then downloaded to their device.

Highlights
  • Bulk image sharing
  • Swipe to save/discard
  • Download saved images
  • Create image stacks
  • Stacks expire after 2 days
Features
Read full description

With Stackd, you can seamlessly share and save images in bulk with your friends and family. Share a Stack and get swiping! - Once you receive your Stack, swipe right on the images you want to save, swipe left on the images you want to discard - At the end of the Stack, simply download the saved images to your device - Create a Stack by uploading images in bulk to share with your friends - You will have 2 days to swipe through your Stack before it expires You can view our End User License Agreement here: https://www.stackdsocial.com/eula

About

Underexpo

This app offers a unique approach to mobile photography, focusing on artistic expression with vintage film filters and effects. It provides powerful yet simple controls for adjusting film grain and chromatic aberration, transforming ordinary shots into nostalgic masterpieces.

Highlights
  • Vintage film filters
  • Custom LUTs by pro photographers
  • Adjustable film grain
  • Chromatic aberration controls
  • Retro camera aesthetics
  • Simple, artistic interface
Features
Read full description

UNDEREXPO Film looks, live in the viewfinder. Underexpo is not a pro camera and does not pretend to be. It is a small, fast film camera that shows you the look before you take the shot, so you can stop editing and start shooting. LIVE FILM PREVIEW Pick a look and the viewfinder changes with it. Grain, color, and contrast are all there before you press the shutter, not bolted on afterwards. REAL FILM LOOKS Hand-graded LUTs built from real film stocks, from soft faded portraits to heavy contrast black & white. Tap through them and stop when one fits. DIAL IT IN Exposure, contrast, black point, saturation, temperature, tint, highlights, and shadows. Plain sliders, no menus to dig through. GRAIN & DUST Thirty scanned dust and scratch overlays, plus adjustable grain and chromatic aberration, for frames that look developed rather than filtered. SAVE YOUR PRESETS Found a combination you like? Save it as your own preset and shoot with it from then on. A CAMERA THAT STAYS OUT OF THE WAY Volume button shutter, rule of thirds grid, tap to focus, flash, 2x zoom, front camera, and your last shot one tap from the editor. Quick Save writes straight to your library. BUILT FOR IPAD Split View and Slide Over are supported, and the camera preview keeps the right aspect ratio at every window size. STAYS ON YOUR DEVICE Every frame is processed on your device. Export straight to Photos with your metadata intact. Underexpose on purpose. UNDEREXPO PRO Film looks, editing tools, and the camera require an Underexpo Pro subscription. Choose weekly, with a free trial for eligible new subscribers, or yearly. Payment is charged to your Apple ID at confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the period ends. Manage or cancel in your App Store account settings. PRIVACY POLICY AND TERMS OF USE: Apple App Store User Agreement - Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy https://tahatuna.com/underexpoprivacy For more information, please visit https://tahatuna.com For support, send an email to: ios@tahatuna.com

Screenshots

Stackd4 screens
Underexpo4 screens

Verdict

The call

The clearest difference is in-app purchases: Stackd at none against Underexpo's 4. Stackd also leads on update cadence (every 4 days vs fortnightly) and iOS requirement (15.1 vs 26.0). On price, review sentiment, 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. Underexpo sells 4 in-app purchases, starting at $3.99 per 7 days. Stackd asks for nothing beyond the download.

UpkeepUpdate frequency

Stackd ships an update every 4 days, Underexpo fortnightly. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Stackd versus Underexpo: the parameters behind the verdict, then further details
ParameterStackdUnderexpo
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 4 days — betterFortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better26.0
Further details — not scored
Size47 MB96 MB
Age rating4+4+
DeveloperJoshua CaplanAli Taha Tuna

Customer experience

Stackd

Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Underexpo

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Stackd

No in-app purchases

4 purchases

Underexpo

Subscriptions3
  • Underexpo Pro Weekly3 Days trial$3.997 Days
  • Underexpo Pro Monthly$7.991 Month
  • Underexpo Pro Annual$24.991 Year
One-time1
  • Underexpo Lifetime Membership$19.99

Questions

Is Stackd free?
Stackd is free to download, with no in-app purchases.
Is Underexpo free?
Underexpo is free to download, with in-app purchases available.
Do Stackd or Underexpo have ads?
Neither Stackd nor Underexpo shows ads.
Which is updated more often, Stackd or Underexpo?
Stackd ships an update every 4 days, and Underexpo fortnightly. Most recently, Stackd was updated on October 14, 2026 and Underexpo on October 24, 2026.

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