Comparison

ARMOR vs Free Up Space

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

Head to head
About

ARMOR

Simulate robot dynamics with a powerful physics engine and visualize them in augmented reality. Load and inspect URDF robot files, edit them, and export for further development. Ideal for engineers, students, and researchers working with robotics.

Highlights
  • MuJoCo physics engine
  • Advanced URDF viewer
  • Built-in editor and export
  • Humanoid and spatial robot visualization
  • Robot arm kinematics
  • Augmented Reality (AR) integration
  • ROS workflow integration
Features
Read full description

ARMOR brings real MuJoCo physics simulation to your pocket. Load any URDF (Unified Robot Description Format) robot, simulate true dynamics, and place it in AR — directly on iPhone, iPad, and Mac. Built for robotics engineers, students, and researchers, ARMOR bridges the gap between desktop-grade simulation and mobile accessibility — inspect joint kinematics, fine-tune a humanoid's balance, or demo a collaborative robot arm, all without a workstation. KEY FEATURES: • MuJoCo Physics Engine: Leverage the industry-standard MuJoCo engine for high-fidelity physics simulations. ARMOR makes it easy to visualize joint dynamics and collisions on mobile hardware. • Advanced URDF Viewer: Load and inspect your own URDF robot files—the standard XML format produced by ROS and XACRO workflows. ARMOR handles complex links, joints, and geometries with ease, providing a comprehensive engineering view of your robot's structure. • Built-In Editor & Export: Create and edit links and joints with guided wizards, then export your project as a ROS-style URDF package or a MuJoCo MJCF file to continue your work on the desktop. • Humanoid & Spatial Robot Visualization: Perfect for visualizing cutting-edge platforms. Load models similar to the Boston Dynamics Atlas or open-source humanoids like the Reachy Mini to study their form and motion in a spatial context. • Robot Arm Kinematics: A vital tool for industrial automation and cobot development. Inspect robot arms like the ABB YuMi and other multi-axis systems with precision. • Augmented Reality (AR): Move from the screen to the real world. Place your robot models in your physical environment at 1:1 scale to assess spatial dimensions and workplace layout. • Engineering Workflow Integration: Designed for the modern robotics professional. ARMOR supports standard file formats, making it the perfect companion for ROS (Robot Operating System) workflows. WHY ARMOR? ARMOR was built by engineers, for engineers. By bridging the gap between desktop simulation and mobile accessibility, ARMOR allows you to present your robotics projects to clients, teach engineering concepts in the classroom, or debug kinematics during a field test—all from your mobile device. COMPATIBILITY: ARMOR supports a wide range of URDF configurations, including those used for humanoid robots, industrial grippers, and mobile platforms. Optimized for the latest iOS hardware to ensure smooth, fluid rendering even for complex assemblies. Disclaimer: ARMOR is an independent third-party application and is not affiliated with, sponsored by, or endorsed by Boston Dynamics, ABB, or the MuJoCo project. References to third-party trademarks and robot models are for nominative and descriptive purposes only, to indicate compatibility and visualization capabilities. All other trademarks are the property of their respective owners. Terms and Conditions: https://armor.dc-engineer.com/terms.html

About

Free Up Space

This app helps you reclaim storage space on your iPhone by identifying and removing duplicate or similar photos, compressing large videos, and clearing out forgotten clutter like screenshots and blurry images. It offers an offline, private, and free solution to manage your device's memory.

Highlights
  • Find and delete duplicate photos
  • Identify and keep best similar photos
  • Compress large videos and photos
  • Clear screenshots, bursts, and blurry images
  • Swipe interface for quick cleaning
  • Filter and sort media by size and date
  • Track reclaimed storage space
Features
Read full description

Free up Storage in minutes • Find duplicate photos and delete them in one tap • Spot similar shots and keep only the best one • Compress large videos - keep the memory, lose the gigabytes • Clear out screenshots, selfies, bursts and blurry photos • Swipe through your camera roll: left to bin, right to keep • Merge duplicate contacts into one card • Filter and sort by size, date, month or media type • See exactly how much space every cleanup frees • 100% offline - your photos and contacts never leave your iPhone 100% FREE. NO PAYWALL. Declutta is a free iPhone storage cleaner that helps you reclaim space without a subscription or paywall. Your storage is full, and it is not your fault. Every burst, every screenshot, every 4K video adds up until iOS starts refusing to take the next photo. Declutta finds the clutter hiding in your camera roll and helps you delete it - fast, in bulk, and without ever uploading a single image. Find duplicate photos Declutta scans your library and groups every duplicate together. Copies saved twice from messages, AirDrops of photos you already had, screenshots of screenshots - all found, all grouped, all ready to go. One tap keeps the best copy and clears the rest. Find similar photos You took eight shots of the same sunset. You need one. Declutta groups near-identical photos so you can keep your favorite and delete the rest in a single action, instead of scrolling through an album one photo at a time. Compress large videos and photos Large videos are the biggest win on almost any iPhone. Declutta finds them, shows you exactly how much each one is holding, and compresses them to 1080p, 720p or 540p - the video stays in your library, just smaller. Photos compress too, with dates, locations and album membership preserved. Clean the clutter you forgot about • Screenshots - receipts, memes and boarding passes from last year • Screen recordings - they can take up a surprising amount of space • Bursts - keep the best frame, clear the other thirty • Blurry photos - the ones that never came out • Selfies - review a year of them in one place • Live Photos - convert to stills and reclaim the paired video Merge duplicate contacts The same person saved three times? Declutta finds contacts sharing a name, email or number and merges them into one card, keeping every detail. Swipe to clean Quick Clean turns tidying up into something you can do in a queue. Swipe left to bin a photo, right to keep it. Nothing is removed until you confirm the whole batch, so you can go fast without worrying. Filter down to what matters Sort by size to find the space hogs first. Filter by date, by a specific month or year, or narrow a list to photos or videos only. Open any photo full screen and pinch to zoom before you decide. Track your progress Declutta counts every gigabyte you reclaim and turns it into milestones - from your first cleanup to a whole month cleared. The storage ring updates as you go, so you can watch the space come back. Private and secure by design • 100% offline - the entire scan runs on your iPhone • No uploads, ever - nothing is sent to a server • No account, no sign-up, no email required • No tracking, no ads, no data sold or shared • Deleted photos go to Recently Deleted, so you can always change your mind Declutta cannot look at your photos. Not because we promise not to - because there is nowhere for them to go. Built for iPhone Native, fast and designed for iPhone and iPad. A Home Screen widget shows your reclaimable space at a glance, and Shortcuts or Siri can start a cleanup. Dark mode included. Available in 14 languages. Free, no paywall Declutta is completely free to use. No subscription is required to find duplicates, compress videos or free up storage. Stop deleting apps to make room for photos. Download Declutta and take your storage back. Privacy policy: https://codivolabs.com/apps/declutta/privacy/ Terms of use: https://codivolabs.com/apps/declutta/terms/

Screenshots

ARMOR4 screens
Free Up Space4 screens

Verdict

The call

The clearest difference is rating: ARMOR at 5.0 against Free Up Space's 4.5. Free Up Space's advantage is in-app purchases (none vs 3) and update cadence (every 5 days vs every 2 weeks). On price, ratings volume, 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. ARMOR sells 3 in-app purchases, starting at $4.99 per month. Free Up Space asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ARMOR holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

ARMOR ships an update every 2 weeks, Free Up Space every 5 days. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 6 level
ARMOR versus Free Up Space: the parameters behind the verdict, then further details
ParameterARMORFree Up Space
PriceFreeFree
Rating5.0 (1 ratings) — better4.5 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings12 — better
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS18.017.0 — better
Further details — not scored
Size36 MB7 MB
Age rating4+4+
DeveloperEliott RadcliffeTushar Sharma

Customer experience

ARMOR

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Free Up Space

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

ARMOR

Subscriptions2
  • Premium Monthly$4.991 Month
  • Premium Yearly$49.991 Year
One-time1
  • Premium Lifetime$99.99
None

Free Up Space

No in-app purchases

Questions

Is ARMOR free?
ARMOR is free to download, with in-app purchases available.
Is Free Up Space free?
Free Up Space is free to download, with no in-app purchases.
Which has better reviews, ARMOR or Free Up Space?
ARMOR is rated higher. ARMOR averages 5.0 out of 5 from 1 ratings, while Free Up Space averages 4.5 from 2 ratings.
Do ARMOR or Free Up Space have ads?
Neither ARMOR nor Free Up Space shows ads.
Which is updated more often, ARMOR or Free Up Space?
ARMOR ships an update every 2 weeks, and Free Up Space every 5 days. Most recently, ARMOR was updated on October 11, 2026 and Free Up Space on October 7, 2026.

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