Comparison

challenge.camera vs 12px Photo Challenge

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

Head to head
About

challenge.camera

Features
Read full description

I have a couple of friends that are also into photography, we try to meet up on a regular basis and take pictures. We soon realised that we need themes, and we did not find an easy solution to the problem. So I sat down one weekend and created challenge.camera. The site has been up since mid-2019, and has seen some traffic. To make it even easier, I decided to make an app that links to the webpage, and here it is! All example images are copyrighted be me fredrikmolnar.se or from unsplash.com. If you have any suggestions, send an email to suggestions@challenge.camera Enjoy!

About

12px Photo Challenge

Features
Read full description

Photo challenges every month: each month a topic will be published and participants have to upload their work. Test your imagination and ability as a photographer. When uploading a participation, simply choose from the gallery or from your mobile camera. The image metadata (if any) will then be automatically populated. You just have to fill in the title of the photo and if you want us to share your work on our social networks. The idea is that you upload a photo captured the current month, so you force yourself to go out, use your camera, and capture something fresh. But of course, you can upload what you want. You can modify or delete your participation at any time, as well as modify the details of the photo: title, description, metadata... You will also be able to comment on other images participating in the different monthly photography challenges. As soon as the contest ends, 12px.app team will review all the photographs and make a selection of the best ones. To see the winners, simply navigate the app to the "Previous" section, where all past challenges will appear. In the Profile section you can see all your uploaded photos, as well as add or delete access methods to your account.

Screenshots

challenge.camera4 screens
12px Photo Challenge4 screens

Verdict

The call

The clearest difference is ads: challenge.camera at none against 12px Photo Challenge's shown. 12px Photo Challenge's advantage is update cadence (every 4 weeks vs every 4 months) and iOS requirement (12.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

challenge.camera ships an update every 4 months, 12px Photo Challenge every 4 weeks. The most recent releases landed on November 7, 2026 and October 27, 2026 respectively.

Scorecard3 real differences ยท 3 level
challenge.camera versus 12px Photo Challenge: the parameters behind the verdict, then further details
Parameterchallenge.camera12px Photo Challenge
PriceFreeFree
Update frequencyEvery 4 monthsEvery 4 weeks โ€” better
AdsNo โ€” betterYes
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod โ€” better
Requires iOS15.612.0 โ€” better
Further details โ€” not scored
Size1 MB71 MB
Age rating9+17+
DeveloperFredrik MolnarJavier Hernandez Torres

In-app purchases

None

challenge.camera

No in-app purchases

None

12px Photo Challenge

No in-app purchases

Questions

Is challenge.camera free?
challenge.camera is free to download, with no in-app purchases.
Is 12px Photo Challenge free?
12px Photo Challenge is free to download, with no in-app purchases.
Do challenge.camera or 12px Photo Challenge have ads?
12px Photo Challenge shows ads; challenge.camera does not.
Which is updated more often, challenge.camera or 12px Photo Challenge?
challenge.camera ships an update every 4 months, and 12px Photo Challenge every 4 weeks. Most recently, challenge.camera was updated on November 7, 2026 and 12px Photo Challenge on October 27, 2026.

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