Comparison

RunGap vs Cudex

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

Head to head
About

RunGap

Consolidate workout data from over 50 fitness services into one app. Access, share, and export your training history with detailed statistics, charts, and gear tracking. Integrates with popular devices and platforms.

Highlights
  • Syncs data from 50+ fitness services
  • Consolidates training history
  • Detailed statistics and charts
  • Interactive maps and activity details
  • Track shoe, bike, and gear usage
  • Geotag photos and videos
Features
Read full description

The most well-connected Workout Data manager on the App Store with support for 50 of the most popular apps and services. Get your complete training history and take control of your workout data. Keep all your workout details from popular services including Apple Watch, Polar, Garmin, Coros, Peloton, Strava, Runtastic, Suunto, adidas, SportsTracker, Apple Health, Zwift, Rouvy and many others on your iPhone or iPad for instant access anytime. Easily share, backup and export your workouts as you like (requires "Swag Bag" subscription available as in-app purchase). Unattended background operation. RunGap can both read and write workouts from and to Health including route maps, heart rate and distance. View statistics and interactive charts, maps and details for individual workouts. Browse your favorite tracks and compare past results. Easily track your shoe, bike and other gear usage. Geotag photos and videos related to an activity. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ PLEASE NOTE: If you have any issues, consider contacting support instead of giving a negative rating - most times your issues can be solved or answered. A rating will not get your app back to work, but the support can help - simply use the integrated "Online Support" function.

About

Cudex

This app gamifies your daily steps by turning them into experience points to collect and hatch unique monsters. Earn in-app currency to customize your collection and compete with friends. Unlock new creatures and features with optional Pro upgrades.

Highlights
  • Collect monsters by walking
  • Earn XP from daily steps
  • Track steps via Apple Health
  • Compete with friends
  • In-app shop for customization
  • Optional Pro subscription for advanced features
Features
Read full description

There's a monster in here. Your steps collect more. Cudex turns your daily walking into a collection of monsters. Walk with your phone. Collect your steps. Hatch something new. Cudex is free to use, with no ads. Cudex Pro adds more. HOW IT WORKS • Your iPhone already counts your steps with Apple Health • Tap Collect in the app to turn today's steps into XP • XP raises your level, and every level hatches a new monster into your collection Every 100 steps is 1 XP. Steps you don't collect by midnight are gone, so the daily tap is the habit. Up to three reminders a day help you collect before the day ends. FREE FOR EVERYONE • 60 monsters to find, one every level • Streaks, badges and quests to chase • A history calendar of every day you've walked • Outfits and places for your monster from the shop, bought with coins you earn by walking • Share cards for a great day or a new monster • A daily step goal you set yourself WALK WITH FRIENDS Add friends with a code and see who has walked the most today. Tap a friend to see their monster, their collection and their badges. Friends is optional. Nothing is shared until you turn it on, and you can stop sharing at any time. WHAT CUDEX PRO ADDS • 48 rare monsters to find • Home screen and lock screen widgets, so you can collect without opening the app • Apple Watch complications • Insights: trends, consistency, your week, goal days and the hours you walk • The full shop of outfits and places YOUR STEPS, YOUR CHOICE Cudex reads step counts from Apple Health. Your steps stay on your phone unless you turn on Friends, and then only the friends you add can see them SUBSCRIPTION Cudex Pro is available as a monthly or yearly subscription, or as a one-time Lifetime purchase. If a free trial is offered, it converts to a paid subscription unless you cancel before it ends. Payment is charged to your Apple ID at confirmation of purchase. A subscription renews automatically unless you cancel at least 24 hours before the end of the current period. Manage or cancel it in your Apple ID settings. Collect monsters. Keep walking. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://acris.ai/monster-steps/privacy

Screenshots

RunGap4 screens
Cudex4 screens

Verdict

The call

The clearest difference is ratings volume: RunGap at 5.9K against Cudex's 6. RunGap also leads on iOS requirement (16 vs 26.5). On price, rating, update cadence and ads 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. RunGap sells 2 in-app purchases, starting at $4.99 per 3 months and Cudex sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for RunGap against 4.8 for Cudex. That said, the two scores are not equally well evidenced: RunGap has 5.9K ratings behind it against 6, so its average is the more settled of the two.

UpkeepUpdate frequency

RunGap ships an update every 2 weeks, Cudex weekly. Both last shipped on November 6, 2026.

Scorecard2 real differences · 8 level
RunGap versus Cudex: the parameters behind the verdict, then further details
ParameterRunGapCudex
PriceFreeFree
Rating4.8 (5.9K ratings)4.8 (6 ratings) — better
Positive reviews77.0% of reviews—
Number of ratings5.9K — better6
Update frequencyEvery 2 weeksWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS16 — better26.5
Further details — not scored
Size14 MB31 MB
Age rating12+4+
DeveloperCTRL-NSiraj Hasanov

Customer experience

RunGap

All ratings5,937 ratings
Positive94.9%
Neutral2.1%
Negative2.9%
Written reviews439 reviews
Positive77.0%
Neutral5.0%
Negative18.0%

Cudex

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

RunGap

Reported bugs

3 issues
  • App crashes or freezes
  • Syncing issues with certain platforms
  • Incorrect data transfer or formatting

Requested features

4 requests
  • Improved user interface and navigation
  • Automatic background syncing
  • Integration with more fitness platforms
  • Offline data access and editing

Cudex

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

RunGap

Subscriptions2
  • Quarterly Swag Bag$4.993 Months
  • Annual Swag Bag$14.991 Year
3 purchases

Cudex

Subscriptions2
  • Pro Month$4.991 Month
  • Pro Year7 Days trial$29.991 Year
One-time1
  • Pro Lifetime$59.99

Questions

Is RunGap free?
RunGap is free to download, with in-app purchases available.
Is Cudex free?
Cudex is free to download, with in-app purchases available.
Which has better reviews, RunGap or Cudex?
Cudex is rated higher. RunGap averages 4.8 out of 5 from 5.9K ratings, while Cudex averages 4.8 from 6 ratings.
Do RunGap or Cudex have ads?
Neither RunGap nor Cudex shows ads.
Which is updated more often, RunGap or Cudex?
RunGap ships an update every 2 weeks, and Cudex weekly. Most recently, RunGap was updated on November 6, 2026 and Cudex on November 6, 2026.

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