Retro Flash: Climbing

Retro Flash: Climbing

Spray Wall and Community App

226 ratings
29 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • December 10, 2020
  • June 19, 2026

Features

Retro Flash: Climbing screenshot #1 for iPhone
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Retro Flash: Climbing screenshot #7 for iPhone
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About

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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What's New in Retro Flash

2.1.6

June 19, 2026

fix hold rule display/selection bug fix filter and custom grading bugs small ui adjustment

More
8

In-App Purchases

$9.99

Additional Wall

A wall will be added to this Gym/Profile.

User reviews

Thumbs Up

Very easy and not very expensive compared to other apps that are not really much better. Intuitive and good layout, with many options for upgrades and whatnot if that’s what you’re going for. Yall should add a tick list of all the climbs you’ve done. similar to random system boards that show the number and distribution of grades for the individual. this is more for fun than anything but i think it would be nice since it’s the app i use the most for spray/limit bouldering and it would be nice to see my distribution.
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Extremely functional

Needed a way to log and keep track of my spray wall boulders. This app does 3 primary things I love…
(1) allows me to document boulders
(2) organizes the boulders with filters
(3) provides the community with the ability to use the spray wall

On top of that this is completely free to use. There are options you can pay for but they are a one time fee (NOT a subscription), love that part. I hate subscription instead of one time fees
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Horrid UI

The ui is just genuinely awful to use

Hee it

Thank god I don’t have to pay

The Best Community Spray Wall App

This is by far the best app for users who have a home wall that many people climb on.

Developer apps

FAQ

What does Retro Flash do?

Retro Flash is an app designed to help climbers optimize their spray wall training. It provides tools for setting various types of climbing problems, supports different wall configurations, and integrates with popular grading systems.

What are the key features of Retro Flash?

Key features include the ability to set circuits and competition boulders, support for symmetrical, partly symmetrical, adjustable, and private walls, and integration with Fontainebleau, Dankyu, and Hueco grading systems. Users can also define their own grading systems or deactivate grading.

Is Retro Flash free to use?

The app is free to download and use, but it offers in-app purchases for wall upgrades that unlock new training possibilities. These upgrades allow users to enhance their spray wall experience further.

What climbing grading systems does the app support?

Retro Flash supports the Fontainebleau, Dankyu, and Hueco grading systems. Additionally, users have the flexibility to define their own custom grading systems or choose to deactivate grading altogether if preferred.

Who is Retro Flash for?

This app is designed for every member of the climbing community, particularly those who utilize spray walls for training. It aims to provide climbers with the tools and community support they need to get the most out of their practice.