Challenger vs GR Linker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Challenger
Discover and create location-based video challenges. Explore challenges near you on a map and share your attempts by uploading videos. Contribute to a growing encyclopedia of local activities.
- Create location-based challenges
- Upload challenge attempt videos
- Browse challenges on a map
- Discover local activities
- Contribute to a challenge encyclopedia
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Challenger is a living encyclopedia of location-based challenges. CREATE A CHALLENGE Upload a video of you attempting a challenge tied to a specific place. BROWSE THE MAP See what challenges exist near you. ADD YOUR ATTEMPT Upload a video of you attempting an existing challenge.
GR Linker
Wirelessly transfer photos and videos from your Ricoh GR II, GR III, or GR IIIx camera to your phone. Browse, select, and download JPG, RAW, and MOV files with support for multitasking and quick connections.
- Wireless photo and video transfer
- Supports JPG, RAW, and MOV formats
- Browse camera photos and Exif data
- Swipe to select multiple photos
- Multitasking concurrent downloads
- Quick camera connection
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GR Linker is a specialized tool for Wi-Fi wireless photo transfer for Ricoh GR II, GR III, GR IIIx and GR IV cameras (including the HDF Edition). With this tool, you can wirelessly transfer photos and videos from your camera to your phone. It supports browsing and downloading of JPG, RAW, and MOV format photos and videos. It also supports quick camera connection, swipe to select multiple photos, and multitasking concurrent downloads. - Connect Easily configure for a quick connection. - Browse Browse photos on your camera and view photo Exif information. - Select Swipe to select multiple photos and quickly add them to the download list. - Download Download multiple items concurrently and save them to the system album. --------------- Terms of Use: https://solotechstudio.com/terms/english Privacy Policy: https://solotechstudio.com/privacy/english Contact Us: If you have any questions, please email support@solotechstudio.com ：）
Screenshots
Verdict
The clearest difference is price: Challenger at Free against GR Linker's $7.99. Challenger also leads on review sentiment (100% vs 58%) and rating (5.0 vs 4.5). GR Linker's advantage is ratings volume (112 vs 6) and chart position (#167 vs unranked). On update cadence, 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
Challenger is free to download; GR Linker costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Challenger holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: GR Linker has 112 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 100% of Challenger's written reviews are positive against 58% of GR Linker's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on June 9, 2026 and September 21, 2026 respectively.
| Parameter | Challenger | GR Linker |
|---|---|---|
| Price | Free — better | $7.99 |
| Rating | 5.0 (6 ratings) — better | 4.5 (112 ratings) |
| Positive reviews | 100.0% of reviews — better | 57.6% of reviews |
| Number of ratings | 6 | 112 — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | — | #167 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 56 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | William Leaf | Hangzhou Yuhang Solo Tech Studio (Individually Owned Business) |
Customer experience
Challenger
GR Linker
In-app purchases
Challenger
No in-app purchases
GR Linker
No in-app purchases
