Comparison

Retro Flash vs Fatometer

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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!

About

Fatometer

Features
Read full description

Turn your weight loss into a fun activity! Fatometer shows you in real time how much effort it takes to burn the foods you eat. Watch your favorite foods disappear as you exercise. Make weight loss a fun and motivating challenge: set goals, visualize your efforts, and finally understand how your body eliminates every calorie. Already available: • Personal settings (weight, height, age) to estimate your basal energy needs and determine how fast your body burns calories. • Choose a physical activity to start a session (slow, normal, or fast walking, running, cycling, strength training…) with calorie burn calculated using standardized MET values and your body’s estimated burn rate. • Fun visualization of foods burned in real time (e.g., a fry, a burger, etc.): finally, watch your effort progress minute by minute. • Set goals: today, burn 10 fries; in a month, eliminate a full burger! • Check your “burned foods” board to track your efforts and progress. Coming soon: • Smart tracking of your eating habits to raise awareness of unhealthy practices and discover easy optimizations—without overhauling your entire diet. This first version is the starting point of a new way to understand your body. Your feedback is essential to help the app evolve. Important: This app is designed for fun and informational purposes. It is not a substitute for medical advice. For any health-related goals, please consult a professional.

Screenshots

Retro Flash4 screens
Fatometer4 screens

Verdict

The call

The clearest difference is in-app purchases: Fatometer at none against Retro Flash's 8. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Retro Flash sells 8 one-off in-app purchases. Fatometer asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

Scorecard1 real difference · 9 level
Retro Flash versus Fatometer: the parameters behind the verdict, then further details
ParameterRetro FlashFatometer
PriceFreeFree
Rating4.7 (226 ratings) — better—
Positive reviews82.9% of reviews—
Number of ratings226 — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size162 MB60 MB
Age rating4+4+
DeveloperArcade Bouldering UG (haftungsbeschrnkt)SPIKE FLOW

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
Show 3 more
  • 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

Fatometer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Retro Flash

One-time8
  • Unlock Rules for Circles$4.99
  • Home Wall Year Pass$4.99
  • 1 Month Upgrade Pass$8.99
Show 5 more
  • 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
None

Fatometer

No in-app purchases

Questions

Is Retro Flash free?
Retro Flash is free to download, with in-app purchases available.
Is Fatometer free?
Fatometer is free to download, with no in-app purchases.
Do Retro Flash or Fatometer have ads?
Neither Retro Flash nor Fatometer shows ads.
Which is updated more often, Retro Flash or Fatometer?
Retro Flash ships an update every 3 weeks, and Fatometer every 3 weeks. Most recently, Retro Flash was updated on October 24, 2026 and Fatometer on October 6, 2026.

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