Retro Flash vs hang!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Retro Flash
This app helps climbers maximize their spray wall training with unique tools for setting various problems and supports multiple grading systems. It fosters a community for climbers to share and improve their training.
- Spray wall problem setting
- Supports symmetrical, partly symmetrical, adjustable, and private walls
- Circuit and competition boulder creation
- Fontainebleau, Dankyu, and Hueco grading systems
- Customizable grading systems
- Wall upgrades for new possibilities
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Welcome to Retro Flash and the Arcade Bouldering Community! Retro Flash is the Ultimate Spray Wall App, designed with every member of the climbing community in mind! We have created a lot of unique tools to ensure that everyone has everything they need to get the most out of their spray walls! For example, we support symmetrical, partly symmetrical, adjustable and private walls! Set all kinds of problems on your wall, like circuits or even competition boulders! With our wall upgrades, we upgrade your walls to the next level, opening up a lot of new possibilities! Now, you can even upgrade your walls by yourself!! Retro Flash supports the Fontainebleau, Dankyu and Hueco grading systems. You can also define your own grading systems or even deactivate grading! Download Retro Flash now and become a part of our growing community!
hang!
This app helps climbers train smarter with customizable hangboard timers. Organize workouts into folders, log sessions with notes and RPE, and sync with Apple Health for progress tracking. Designed for efficiency, it streamlines your training routine.
- Customizable hang and rest timers
- Workout organization by focus
- Session logging with notes and RPE
- Apple Health synchronization
- Climber-designed interface
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Crush Your Training with hang! - The Hangboard App Built for Climbers Trying to level up your climbing? hang! helps you train smarter, not just harder. Whether you're gunning for your next redpoint, piecing together a project, or just keeping those fingers crimp-ready, hang! has you covered. Here's What Makes hang! a Go-To: - Custom Timers That Fit Your Style: Max hangs, repeaters, whatever your thing is - set your own hang time, rest, and reps. No more tweaking stopwatches. - Train From Your Wrist: Your timers sync straight to the Apple Watch app. Run the whole session from your wrist with haptics, live heart rate, and the workout saved to Apple Health. - Organize Like a Pro: Group your timers into folders by focus - power endurance, warm-ups, finger strength - so you're not digging through a mess every session. - Log It or Lose It: Keep track of every session. Add notes, log RPE, and see your progress stack up over time. - Apple Health Sync: Your workouts automatically show up in Apple Health - helpful for tracking overall load and recovery. - Simple, Fast, No B.S. Designed by climbers who'd rather be training than tapping through menus. Whether you're training for comps, chasing your first V5, or just trying to stay strong between weekend trips - hang! keeps you dialed in and ready to send. Download hang! and get after it.
Screenshots
Verdict
The clearest difference is in-app purchases: hang! at none against Retro Flash's 8. hang! also leads on rating (5.0 vs 4.7) and review sentiment (100% vs 83%). Retro Flash's advantage is ratings volume (226 vs 30) and iOS requirement (15.6 vs 18.0). On price, update cadence, 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
Both are free to download. Retro Flash sells 8 one-off in-app purchases. hang! asks for nothing beyond the download.
hang! holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Retro Flash has 226 ratings behind it against 30, so its average is the more settled of the two. Written reviews point the same way: 83% of Retro Flash's written reviews are positive against 100% of hang!'s.
Retro Flash ships an update every 3 weeks, hang! every 5 weeks. The most recent releases landed on September 27, 2026 and September 22, 2026 respectively.
| Parameter | Retro Flash | hang! |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (226 ratings) | 5.0 (30 ratings) — better |
| Positive reviews | 82.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 226 — better | 30 |
| Update frequency | Every 3 weeks — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 15.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 162 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Arcade Bouldering UG (haftungsbeschrnkt) | Pawel Burda |
Customer experience
Retro Flash
hang!
Bugs and requests
Retro Flash
Reported bugs
8 issues- Cannot see sends anymore
- All boulders set to unclimbed for all users
- Statistics are gone
- Won't let me reset wall
- Won't let me delete walls
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- Won't let me add a new wall on a new account
- Camera button to add a photo doesn't do anything
- Can't change the angle of the wall
Requested features
4 requests- Add a tick list of all climbs done
- Show number and distribution of grades
- Copy route feature for minor adjustments
- Ability to edit names or grades of existing boulders
hang!
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Retro Flash
- Unlock Rules for Circles$4.99
- Home Wall Year Pass$4.99
- 1 Month Upgrade Pass$8.99
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- Additional Wall$9.99
- Gym Year Pass Tier 1$14.99
- Add Gym$14.99
- Gym Year Pass Tier 2$29.99
- 6 Months Upgrade Pass$44.99
hang!
No in-app purchases
