Comparison

Rock Climbing Grade Converter vs BoulderBot

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

Head to head
About

Rock Climbing Grade Converter

Easily compare rock climbing grades across different international systems. Simply set your preferred systems and swipe to find equivalent grades for any climb.

Highlights
  • Compare international grade systems
  • Swipe to find equivalent grades
  • Customizable grade system setup
  • Lightweight and easy to use
Features
Read full description

Rock climbing is rated in different grade system in different countries and they are hard to compare. Grade converter allows you to easily look up which grade corresponds to which in different grade systems. Once you set up grade systems you want to compare, all you need to do is trivial swiping!

About

BoulderBot

Generate and track bouldering routes on your home climbing wall. Features procedural generation for infinite climb variations, manual creation, and progress logging. Supports various wall types and works offline.

Highlights
  • Procedural climb generation
  • Manual climb creation
  • Progress tracking and logging
  • Wall setup wizard
  • Offline functionality
  • Search and filter problems
Features
Read full description

BoulderBot is your personal bouldering Spray Wall setter, tracker and organizer. Challenge yourself and find new inspiration by using the experimental Procedural Generation algorithms, quickly creating an infinite number of new climbs on your wall! You can customize parameters like Difficulty and Length to create problems suited to your needs. The generation algorithms are experimental and under active development, but even if they don't produce perfect results, you can immediately edit the generated problems in a few seconds (which is also a great way to improve your setting skills). You can also easily create your own custom problems from scratch. Problems can be saved for tracking your progress and logging ascents, and functionality like searching, filtering and sorting is available to find problems for your training sessions. ADDING YOUR WALL An interactive wizard procedure will allow you to add your wall in the application, guiding you in specifying all required information (this procedure will take around 5 to 10 minutes): - An image of the wall (specific instructions are given to ensure the best generation results) - Attributes like height and angle - The position of the holds on your wall, and their relative difficulty rating This procedure needs to be performed only when you add a new wall or reset the current one. Once a wall is added, all other functionality (like generating problems, or creating them manually) is immediate and takes no extra set up time. An in-app help system is also available if you have any doubt about the application. The application supports Home Climbing Walls, Spray Walls, Woodys, and Training Boards. The generation algorithms work only on generally flat walls which can be pictured in a single image; highly featured walls with many different angles, corners and roof sections are not supported at the moment. NO MANDATORY INTERNET CONNECTIVITY The Application can work completely offline: you can choose to use the App without an account, making the image you select and the Boulder problems you create all stored on your device's internal storage. PROBLEM RULES The boulder problems should be climbed by starting with both hands on green "Start" holds (either one hand per hold if there are two holds, or with both hands matching the single hold). Blue "Hold" holds can be used with both hands and feet, while yellow "Foot" holds cannot be touched by hands. The problem is considered complete once you hold for a couple of seconds onto the red "End" holds (either one hand per hold if there are two holds, or with both hands matching the single hold). DISCLAIMER Climbing is an inherently dangerous activity. Climbs shown in the App are random in nature, there is no guarantee about their safety, quality or correctness, please always judge the safety of the climbs before attempting them.

Screenshots

Rock Climbing Grade Converter4 screens
BoulderBot4 screens

Verdict

The call

The clearest difference is in-app purchases: Rock Climbing Grade Converter at none against BoulderBot's 3. Rock Climbing Grade Converter also leads on rating (4.8 vs 4.4) and review sentiment (100% vs 75%). BoulderBot's advantage is update cadence (every 2 months vs every 10 months). On price, ads, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. BoulderBot sells 3 one-off in-app purchases. Rock Climbing Grade Converter asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Rock Climbing Grade Converter holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Rock Climbing Grade Converter has 140 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 100% of Rock Climbing Grade Converter's written reviews are positive against 75% of BoulderBot's.

UpkeepUpdate frequency

Rock Climbing Grade Converter ships an update every 10 months, BoulderBot every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
Rock Climbing Grade Converter versus BoulderBot: the parameters behind the verdict, then further details
ParameterRock Climbing Grade ConverterBoulderBot
PriceFreeFree
Rating4.8 (140 ratings) — better4.4 (11 ratings)
Positive reviews100.0% of reviews — better75.0% of reviews
Number of ratings140 — better11
Update frequencyEvery 10 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS11.0 — better14.1
Further details — not scored
Size119 MB68 MB
Age rating4+9+
DeveloperYuichi FujikiLuca Dellana

Customer experience

Rock Climbing Grade Converter

All ratings132 ratings
Positive96.2%
Neutral1.5%
Negative2.3%
Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

BoulderBot

All ratings11 ratings
Positive81.8%
Neutral0.0%
Negative18.2%
Written reviews8 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

None

Rock Climbing Grade Converter

No in-app purchases

3 purchases

BoulderBot

One-time3
  • BoulderBot Pro Pass - 3 Months$7.99
  • BoulderBot Pro Pass - 1 Year$17.99
  • BoulderBot Pro$27.99

Questions

Is Rock Climbing Grade Converter free?
Rock Climbing Grade Converter is free to download, with no in-app purchases.
Is BoulderBot free?
BoulderBot is free to download, with in-app purchases available.
Which has better reviews, Rock Climbing Grade Converter or BoulderBot?
Rock Climbing Grade Converter is rated higher. Rock Climbing Grade Converter averages 4.8 out of 5 from 140 ratings, while BoulderBot averages 4.4 from 11 ratings.
Do Rock Climbing Grade Converter or BoulderBot have ads?
Neither Rock Climbing Grade Converter nor BoulderBot shows ads.
Which is updated more often, Rock Climbing Grade Converter or BoulderBot?
Rock Climbing Grade Converter ships an update every 10 months, and BoulderBot every 2 months. Most recently, Rock Climbing Grade Converter was updated on November 2, 2026 and BoulderBot on November 3, 2026.

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