Comparison

KRUU vs Once

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

Head to head
About

KRUU

Capture and relive your special moments with this app. Discover, download, and interact with photos from your event, including those from a dedicated photo booth. Keep your memories organized and accessible for months.

Highlights
  • Discover and download event photos
  • Like and comment on photos
  • Automatic KRUU Photo Booth transfer
  • Online photo storage
  • Manage event participants
  • Create and join events
Read full description

With the KRUU App, the best moments from your celebration stay in one place. Easily discover, download, like, and comment on your photos in a shared gallery. The pictures from your KRUU Photo Booth are also automatically transferred to the app after your approval. New: With the Audio Guestbook, you can listen to your guests’ voicemails again at any time. This way, not only pictures stay with you, but also personal words, lovely wishes, and funny messages. WHAT THE KRUU APP OFFERS YOU: Shared photo gallery: Collect the best photos from your event in a clear feed and share them with family, friends, and guests. KRUU Photo Booth pictures included: Your photo booth pictures are transferred to the app free of charge and can be viewed, downloaded, and shared there. Audio Guestbook: Listen to your guests’ voicemails again and again, even after the celebration. Likes & comments: Interact with your favorite pictures and relive the best moments together. Easy admin area: Manage your event and decide who you share your memories with. Free to use: The KRUU App is free and contains no in-app purchases. HOW IT WORKS: Download the KRUU App and join an event or create a new one. Invite guests, collect your photos in one place, and discover all pictures in the app after the upload. There, you can like, comment, and download them. WHY KEEP THE APP? With the KRUU App, your pictures and voicemails are always within reach, even after the celebration. You do not have to search through your entire phone and can view or listen to your shared memories again at any time. You can also use the app for future celebrations with a KRUU Photo Booth. DATA PROTECTION Your photos are only visible to you and your invited guests. They are protected according to high data protection standards and stored on German servers. WHO IS KRUU? Since 2016, more than 300,000 photo booth customers have trusted KRUU. We are Europe’s market leader in photo booth rentals and work with over 70 team members in Bad Friedrichshall near Heilbronn, Germany. Do you have questions or feedback? Feel free to contact us at support@kruu.com

About

Once

This app allows hosts to create a shared digital "film" for events, enabling guests to capture moments with limited shots. Photos are revealed collectively at a set time, preserving memories and encouraging thoughtful photography.

Highlights
  • Create shared event "films"
  • Guest access via QR code or link
  • Limited shots per participant
  • Delayed photo reveal
  • Host controls for rules and access
  • Downloadable photo galleries
  • Authentic "film" aesthetic
Features
Read full description

How Once Works: 1. Create a film for your event and set the rules 2. Share a QR code or link so guests can join in seconds (No download needed for guests) 3. Everyone shoots in the moment with limited shots per person 4. Photos unlock together at the time you choose, ready to relive and save Why Hosts Choose Once: - QR join, no friction: Guests can join with or without the app via App Clip. - Shared camera for the whole group: Centralize every candid and POV in one place. - Limited shots = better photos: Scarcity encourages thoughtful, story-driven captures. - Delayed reveal: Unlock photos at event end or a custom time to keep guests present. - Private by default: You control access, visibility, and downloads. - Host controls: Set shot limits, reveal mode (instant or delayed), and participant caps. - Download everything: Save full galleries to your device or archive them for later. - Beautiful “film” feel: Subtle, tasteful looks that keep skin tones and ambience true. Perfect For: - Weddings and receptions - Bachelor/Bachelorette parties and showers - Birthdays and reunions - Group trips and retreats - Team offsites - School events, clubs, and fundraisers We Care About Your Privacy: Your event gallery is private by default and controlled by the host. We do not sell your data. See our Privacy Policy at once.film/privacy. Support: Questions or feedback? Please feel free to reach out to us at hello@once.film Life happens only Once. Make sure to capture every angle of it.

Screenshots

KRUU4 screens
Once4 screens

Verdict

The call

The clearest difference is in-app purchases: KRUU at none against Once's 10. KRUU also leads on ads (none vs shown). Once's advantage is update cadence (every 5 days vs every 3 weeks). On price, rating, review sentiment and ratings volume 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. Once sells 10 one-off in-app purchases. KRUU asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for KRUU against 4.8 for Once. Both are backed by a comparable volume of ratings — 2.1K and 714 respectively. Written reviews are what separate them: 65% of KRUU's written reviews are positive against 71% of Once's.

UpkeepUpdate frequency

KRUU ships an update every 3 weeks, Once every 5 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 6 level
KRUU versus Once: the parameters behind the verdict, then further details
ParameterKRUUOnce
PriceFreeFree
Rating4.9 (2.1K ratings) — better4.8 (714 ratings)
Positive reviews64.8% of reviews71.4% of reviews — better
Number of ratings2.1K — better714
Update frequencyEvery 3 weeksEvery 5 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.5 — better16.4
Further details — not scored
Size60 MB144 MB
Age rating12+4+
DeveloperKRUU GmbH10xCompany

Customer experience

KRUU

All ratings2,079 ratings
Positive97.3%
Neutral0.7%
Negative2.0%
Written reviews162 reviews
Positive64.8%
Neutral3.1%
Negative32.1%

Once

All ratings714 ratings
Positive94.1%
Neutral1.3%
Negative4.6%
Written reviews56 reviews
Positive71.4%
Neutral5.4%
Negative23.2%

Bugs and requests

KRUU

Reported bugs

3 issues
  • Printer malfunctions and errors
  • Connectivity issues with WiFi networks
  • App crashes and freezes

Requested features

4 requests
  • Ability to download all photos at once
  • Web-based photo viewing option
  • Improved app usability and navigation
  • Better integration with existing accounts

Once

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

KRUU

No in-app purchases

10 purchases

Once

One-time10
  • Film: 10 participants$1.99
  • Add 10 participants$3.99
  • Film: 25 participants$4.99
Show 7 more
  • Add 25 Participants$9.99
  • Film: 50 participants$14.99
  • Add 50 Participants$19.99
  • 50 Participants (Unlimited Shots)$24.99
  • Film: 100 participants$29.99
  • 100 Participants (Unlimited Shots)$39.99
  • Film: 150 participants$49.99

Questions

Is KRUU free?
KRUU is free to download, with no in-app purchases.
Is Once free?
Once is free to download, with in-app purchases available.
Which has better reviews, KRUU or Once?
KRUU is rated higher. KRUU averages 4.9 out of 5 from 2.1K ratings, while Once averages 4.8 from 714 ratings.
Do KRUU or Once have ads?
Once shows ads; KRUU does not.
Which is updated more often, KRUU or Once?
KRUU ships an update every 3 weeks, and Once every 5 days. Most recently, KRUU was updated on November 3, 2026 and Once on November 5, 2026.

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