Comparison

Boulderthon vs RetroFit!

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

Head to head
About

Boulderthon

Track race day progress with turn-by-turn navigation and real-time updates for friends and family. Stay informed about your race with live tracking features.

Highlights
  • Real-time race tracking
  • Turn-by-turn navigation
  • Live progress updates for spectators
  • Race day information
Features
Read full description

The Boulderthon app is for race day tracking to receive turn-by-turn instructions and for your friends and family to track your progress in real-time.

About

RetroFit!

Features
Read full description

I was 75 pounds overweight with a BMI of 32 (in the obese category). To address this, I began going to the gym and realized the need to track my calories. Given my familiarity with software development, I decided to create an app for this purpose. Over the following months, I used an iterative design process to develop the app, focusing on supporting my weight loss journey. I added buttons to track food and workout calories, and included settings to calculate my basal metabolic rate (BMR) to monitor my total daily calorie expenditure. The addition of BMR settings allowed me to understand the significant impact of activity level on daily calorie needs. While calories burned during a workout contribute to weight loss, the increase in metabolism from higher activity levels, as shown in the BMR calculations, played a substantial role in my overall weight loss. Initially developed for personal use, the app underwent multiple design iterations to assist me in my weight loss efforts. As a result, I am no longer obese or even overweight, but at a normal optimal weight according to BMI calculations (BMI is calculated in the app in the passive view). Although my primary goal was personal, I am now publishing RetroFit in the hope that it will help others interested in weight loss and calorie management to better understand their calorie consumption. Notes: In addition to calorie tracking, I followed a whole foods plant-based diet. My favorite music genre to listen to while working out is 80s rock and roll, which inspired the app's 80s-style design, resembling a calculator from that time period, but for calories.

Screenshots

Boulderthon4 screens
RetroFit!4 screens

Verdict

The call

The clearest difference is update cadence: Boulderthon at every 3 weeks against RetroFit!'s every 4 months. Boulderthon also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.2). On price, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Boulderthon ships an update every 3 weeks, RetroFit! every 4 months. The most recent releases landed on October 14, 2026 and September 30, 2026 respectively.

Scorecard3 real differences · 7 level
Boulderthon versus RetroFit!: the parameters behind the verdict, then further details
ParameterBoulderthonRetroFit!
PriceFreeFree
Rating2.7 (6 ratings) — better—
Positive reviews36.4% of reviews—
Number of ratings6 — better—
Update frequencyEvery 3 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.2
Further details — not scored
Size101 MB1 MB
Age rating4+17+
DeveloperBrooksee, LLCNicholas Pompea

In-app purchases

None

Boulderthon

No in-app purchases

None

RetroFit!

No in-app purchases

Questions

Is Boulderthon free?
Boulderthon is free to download, with no in-app purchases.
Is RetroFit! free?
RetroFit! is free to download, with no in-app purchases.
Do Boulderthon or RetroFit! have ads?
Neither Boulderthon nor RetroFit! shows ads.
Which is updated more often, Boulderthon or RetroFit!?
Boulderthon ships an update every 3 weeks, and RetroFit! every 4 months. Most recently, Boulderthon was updated on October 14, 2026 and RetroFit! on September 30, 2026.

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