12px Photo Challenge vs Rivalarc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
12px Photo Challenge
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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.
Rivalarc
Engage in thrilling 1v1 or group media battles by voting on video and image faceoffs. Create your own challenges, participate in tournaments, and climb leaderboards to earn rewards. Discover diverse content and compete to rise through the ranks.
- 1v1 and group media faceoffs
- Create and join challenges
- Participate in bracket-style tournaments
- Earn in-app currency for rewards
- Interactive voting and commenting
- Discover content via explore feed
- Leaderboard rankings
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RivalArc is where epic media battles unfold - a new-age social platform where creators go head-to-head, and fans decide who wins. Connect your Instagram to battle. Every week, creators are matched up in blind category faceoffs - no picking your opponent, no gaming the bracket. Just pure competition. Fans watch, vote in real time, and crown a winner. Key Features Battles: Connect your Instagram and get matched against a rival creator in your category — blind, fair, and unpredictable. Weekly Cycles: Every week is a new season of battles. Submit, get matched, and see how you stack up. Interactive Voting: React and vote with one tap to decide who takes the win. Leaderboard: Track rankings, see top competitors, and fight for your spot in the arc. Explore Feed: Discover ongoing battles across diverse categories. ArcCoins: Win battles and earn ArcCoins — redeemable soon for rewards and perks. Flexible Search: Find creators, hashtags, and trending battles fast. Smooth Experience: Enjoy an updated UI and bug fixes for seamless battles. Whether you're here to battle or to vote - RivalArc is your space to shine through competition. No likes. Just rivalry. Enter the arc. Rise through votes. Win your crown.
Screenshots
Verdict
The clearest difference is ads: Rivalarc at none against 12px Photo Challenge's shown. Rivalarc also leads on update cadence (every 2 weeks vs every 4 weeks). 12px Photo Challenge's advantage is iOS requirement (12.0 vs 15.1). On price, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
12px Photo Challenge ships an update every 4 weeks, Rivalarc every 2 weeks. The most recent releases landed on October 27, 2026 and October 10, 2026 respectively.
| Parameter | 12px Photo Challenge | Rivalarc |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (6 ratings) — better |
| Number of ratings | — | 6 — better |
| Update frequency | Every 4 weeks | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 71 MB | 92 MB |
| Age rating | 17+ | 12+ |
| Developer | Javier Hernandez Torres | Rivalarc Inc |
In-app purchases
12px Photo Challenge
No in-app purchases
Rivalarc
No in-app purchases









