Comparison

Flex Food vs RoxSIM

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

Head to head
About

Flex Food

This app provides accurate calorie and macro tracking with intelligent meal building and extensive progress metrics. It features natural language meal entry, barcode scanning, and brand discounts. Premium features offer coach connectivity and ad removal.

Highlights
  • Verified nutritional information from large database
  • Intelligent and dynamic meal building
  • Natural language meal entry
  • Barcode scanning
  • Real-time macro and calorie adjustments
  • Weekly progress tracking with various metrics
  • Coach connect module (premium)
Features
Read full description

Welcome to FlexFood, the next level in mobile nutrition. We understand that in order for a nutrition app to meet your goals you need to have guaranteed data accuracy when it comes to calories and macros, fast, simple yet intelligent meal building options and extensive metrics for tracking your weekly progress. We offer all of this and much much more with FlexFood. Features: • 100% verified nutritional information from the world's LARGEST food database. • Various fast, intelligent and dynamic meal building options. • The first of it's kind "Natural Language" meal entry. Just type as it as you would say it! • Fast and accurate bar code scanning. • Huge brand discounts from supplements and food to gym apparel and other services. • Easily switch between training day and rest day calorie and macro targets. • Watch your macros and calories change in real time as you manipulate food volumes and meal portion sizes. • All nutritional data visible on one screen so no more back and forth between lots of screens. • Flexible macro modifications at a meal by meal level. FlexFood can also readjust your other meal targets to stay in line. • Generated weekly shopping lists so you can easily see what to buy for the week ahead. • View all daily calorie and macro targets easily from a high level on our weekly view. • Track your weekly progress via various data metrics such as progress picture upload, scale weight, body measurements and various other key metrics. Premium Features: • Access the coach connect module to view feature coaches, connect with a coach and more. • Send an enquiry on packages we have on our featured coaches' bio's if you find one you wish to work with. • Easily send a connection request to a coach via their unique code. • When you add your weekly progress data, your coach will be notified and can view this data right away. • Your coach is able to also modify your calories, macros and setup meal plans to keep you on track. • All ads removed, that are present in free version. Subscription service details: • In app purchase title: Monthly premium subscription • Removes active adds and gives access to the coach section • Length of subscription: 1 month (with 1 month free trial) • Payment will be charged to iTunes Account at confirmation of purchase • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Coming Soon Features: • Meal & Recipe ideas based on the ingredients you have added from our database of 350k recipes. • Add and save your own custom foods to your inventory (inc calories and macros in the food). • Save meals to easily and quickly reuse when planning your day or week ahead. • Nutrition upload service so you can scan and send product label and nutritional label information to be added to our database once verified (to avoid the database becoming inaccurate). • By using this app, you agree to the Apple Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

RoxSIM

Features
Read full description

RoxSIM is the first race simulator built for HYROX and DEKA athletes. Simulate full events with accurate run/station splits, real-time pacing guidance, transition enforcement, audio coaching, fatigue tracking, and performance analytics—so you train like race day, not guesswork. Prepare for HYROX and DEKA formats (Strong, Mile, Fit) with realistic simulations of run segments, sled push/pull, burpee broad jumps, row, SkiErg, AirBike, farmer’s carry, wall balls, lunges, med-ball work, and transitions. Get prompts like “Slow run pace 8%” or “You’re 10s ahead of last DEKA sim” to keep you on strategy. Core features HYROX & DEKA race simulations (Strong, Mile, Fit) - Real-time pacing guidance & audio coaching - Precise run/station split tracking & race time prediction - Fatigue/efficiency modeling and transition timing - Custom simulation builder & training history - Strategy planning: identify weak segments, balance strength vs endurance Why it matters - Train with exact race structure: loads, sequencing, pacing, fatigue patterns - Enforce transitions (no cheating) and manage energy like on-course - Improve where you actually lose time, not with random workouts Built for - HYROX athletes, DEKA Strong/Mile/Fit competitors, hybrid fitness racers, coaches, and anyone who needs a true race simulator instead of a basic timer. Any setup, anywhere - Gym, studio, garage, or limited equipment - RoxSIM adapts. Simulate sleds, carries, wall balls, and runs with alternatives so you can prep anytime. Stop guessing readiness. Start training like you’ve already seen the course. Download RoxSIM and get race-day ready every day.

Screenshots

Flex Food3 screens
RoxSIM4 screens

Verdict

The call

The clearest difference is update cadence: RoxSIM at weekly against Flex Food's every 3 weeks. On price, ads, in-app purchases 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. Flex Food sells 1 in-app purchase, starting at $5.49 per month and RoxSIM sells 5 in-app purchases, starting at $4.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Flex Food ships an update every 3 weeks, RoxSIM weekly. The most recent releases landed on August 11, 2026 and September 19, 2026 respectively.

Scorecard1 real difference · 7 level
Flex Food versus RoxSIM: the parameters behind the verdict, then further details
ParameterFlex FoodRoxSIM
PriceFreeFree
Positive reviews95.7% of reviews—
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size91 MB45 MB
Age rating4+4+
DeveloperThe FlexFood App Ltdfrank vitetta

In-app purchases

1 purchases

Flex Food

Subscriptions1
  • Monthly premium subscription1 Month trial$5.491 Month
5 purchases

RoxSIM

Subscriptions3
  • Monthly Subscription$4.991 Year
  • UK$4.991 Month
  • Pro Access$49.991 Year
One-time2
  • Frank the Tank Unlock$4.99
  • Hyrox Pack Unlock$7.99

Questions

Is Flex Food free?
Flex Food is free to download, with in-app purchases available.
Is RoxSIM free?
RoxSIM is free to download, with in-app purchases available.
Do Flex Food or RoxSIM have ads?
Neither Flex Food nor RoxSIM shows ads.
Which is updated more often, Flex Food or RoxSIM?
Flex Food ships an update every 3 weeks, and RoxSIM weekly. Most recently, Flex Food was updated on August 11, 2026 and RoxSIM on September 19, 2026.

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