Comparison

RehabKit vs Bubble Level

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

Head to head
About

RehabKit

This app provides physical therapists and trainers with a suite of tools for timing, measurement, analysis, and clinical calculations. It also offers access to curated research and clinical resources, streamlining the assessment-to-action workflow.

Highlights
  • Timing tools (Tempo, Tabata, Metronome)
  • Measurement and motion analysis
  • Clinical calculators
  • Curated research feeds
  • Clinical practice guidelines
  • Background execution
  • Live Activities support
Read full description

RehabKit – Precision Tools for Rehab & Performance RehabKit is a comprehensive toolkit built for physical therapists, athletic trainers, strength coaches, and performance professionals. Designed for real-world use, it brings together timing, measurement, analysis, clinical calculators, and research - all in one seamless workflow. Whether you’re in the clinic, on the field, or in the gym, RehabKit helps you move faster from assessment to action with precision and confidence. All the Tools You Need. One App. Timing Tools for Real Training Flow Tempo, Tabata, EMOM, Metronome, Timer, and Playlist tools give you complete control over session structure. - Audio cues, haptics, and voice support - Live Activities (Dynamic Island + Lock Screen) - Background execution so your session never stops - Fast setup with saved preferences - Wirelessly transfer Playlists to/from your clients Measurement & Motion Analysis Turn your device into a powerful assessment tool. - Inclinometer (digital goniometer) - Rotation (multi-axis movement tracking) - Cadence (real-time step rate) - Motion Analysis with video + pose detection Capture objective data where it matters most. Clinical Calculators Fast, repeatable calculations designed for real sessions: - Heart Rate Reserve (HRR) training zones - One-Rep Max (1RM) predictions (multiple formulas) - Recovery analysis - Limb symmetry comparisons Research That Stays Relevant Stay current without extra effort. - Curated feeds from leading rehab journals (JOSPT, BJSM, AJSM, and more) - Article summaries with images - Offline access for use anywhere Clinical Resources Built In Access evidence-based care instantly: - Clinical Practice Guidelines (CPGs) with summaries - Clinical Prediction Rules (CPRs) - Built-in viewers with fast navigation No switching apps. No lost time. Designed for How You Actually Work - Clean, fast navigation across all tools - Deep linking for instant access (even from widgets) - Customizable settings, audio, and feedback - Guided onboarding with in-app tutorials - Built for real sessions - not just demos Built on a Professional Foundation RehabKit is engineered with modern iOS frameworks for reliability and performance: - Sensor-driven measurement tools (CoreMotion) - High-precision audio timing engine - Real-time video analysis - Seamless subscription and trial experience Free Trial Download RehabKit and explore all features with a limited free trial before subscribing. Subscription Options Unlock full access with flexible options: - Monthly - Yearly - One-time purchase Subscriptions include: - Ongoing updates and enhancements - Access to new tools as they are released - Performance improvements and fixes Subscription Details - Payment will be charged to your Apple ID 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 - Your account will be charged for renewal within 24 hours prior to the end of the current period - You can manage subscriptions in your Account Settings after purchase - Any unused portion of a free trial will be forfeited upon subscription purchase EULA/Terms of Use: http://www.apple.com/legal/itunes/appstore/dev/stdeula Privacy Policy: https://rehabkit.app/app-privacy-policy RehabKit isn’t just a collection of tools—it’s a complete system for modern rehab and performance. Measure better. Move faster. Deliver results. Medical Disclaimer In addition to using this app, always consult with a physician or qualified healthcare provider before making medical decisions.

About

Bubble Level

This utility app transforms your device into a precise bubble level and angle finder. It offers augmented reality measurement tools, a user-friendly interface, and Apple Watch integration for live readings. Ideal for DIY enthusiasts and professionals needing accurate surface leveling and inclination measurements.

Highlights
  • Augmented reality ruler and protractor
  • Precise angle measurements to one tenth of a degree
  • Effortless one-touch calibration
  • Clear and easy-to-read visual display
  • Apple Watch integration for live angle readings
  • Measures inclination and slope
Features
Read full description

Transform Your Phone into a Precision Leveling Tool! Over 450K users - 4.5 Star Average Rating Introducing the Super-Easy Level: Turn your device into a highly accurate bubble level (spirit level) with ease. Ideal for both DIY aficionados and professional builders, our app delivers unparalleled precision for any leveling task. Why Choose Super-Easy Level? Versatile Measurement Tools: Not only can you check the level and inclination of surfaces, but with our camera integration, measuring lengths becomes a breeze. Augmented Reality Features: Equipped with an augmented reality ruler and protractor for cutting-edge measurement accuracy. Simplicity at Its Best: Enjoy a user-friendly interface that makes navigation a piece of cake on any smartphone or tablet. Now on Apple Watch: Angle measurements appear live on your wrist. The Watch app mirrors your iPhone's mode and accent color in real time. In 1D mode, a full-screen artificial horizon tilts with your measured angle — choose degrees, slope %, or near-delta. In 2D mode, a dual-axis crosshair with a yaw compass ring tracks tilt on both axes simultaneously. Lock readings or save angles directly from your Watch; the last reading stays on screen even if the iPhone connection drops. Key Features: Ultra-Precise: Measures angles to the nearest tenth of a degree. Effortless Calibration: Simple one-touch calibration keeps accuracy at your fingertips. Clear Visual Display: Our interface is designed for clarity, ensuring your measurements are easy to read at a glance. Robust Toolset: Whether it's a quick DIY project or a professional job, our app is up to the task. Get Started in Seconds: Align your phone with a known level or vertical edge. Press the calibration button. Done! Elevate your DIY and professional projects with Super-Easy Level — download now and level up your precision game! Features: ◉ Accurate measuring to one tenth of a degree. ◉ Super easy angle calibration and handling. ◉ Precise and reliable measurements ◉ Ability to measure inclination/slope ◉ Easy to read display ◉ Calibration function for even more accurate results ◉ User-friendly interface and can be used on any smartphone or tablet. ◉ Apple Watch support — live angle readings, lock & save from your wrist. How to calibrate: ◉ Align the phone with a level or vertical edge and hit the calibration button. ◉ That's it. Terms of use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

RehabKit4 screens
Bubble Level4 screens

Verdict

The call

The clearest difference is review sentiment: RehabKit at 100% against Bubble Level's 43%. RehabKit also leads on rating (5.0 vs 4.5) and ads (none vs shown). Bubble Level's advantage is ratings volume (721 vs 82) and iOS requirement (16.6 vs 26.0). On price, update cadence, in-app purchases and monetization model 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. RehabKit sells 3 in-app purchases, starting at $12.99 per month and Bubble Level sells 10 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

RehabKit holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Bubble Level has 721 ratings behind it against 82, so its average is the more settled of the two. Written reviews point the same way: 100% of RehabKit's written reviews are positive against 43% of Bubble Level's.

UpkeepUpdate frequency

RehabKit ships an update every 9 days, Bubble Level weekly. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

Scorecard5 real differences · 5 level
RehabKit versus Bubble Level: the parameters behind the verdict, then further details
ParameterRehabKitBubble Level
PriceFreeFree
Rating5.0 (82 ratings) — better4.5 (721 ratings)
Positive reviews100.0% of reviews — better43.3% of reviews
Number of ratings82721 — better
Update frequencyEvery 9 daysWeekly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS26.016.6 — better
Further details — not scored
Size139 MB43 MB
Age rating12+4+
DeveloperSchumacher Physical Therapy and PerformanceJens Rieckhof

Customer experience

RehabKit

All ratings82 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews15 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bubble Level

All ratings721 ratings
Positive87.1%
Neutral3.9%
Negative9.0%
Written reviews30 reviews
Positive43.3%
Neutral3.3%
Negative53.3%

Bugs and requests

RehabKit

Not enough reviews yet to summarise bugs or requests.

Bubble Level

Reported bugs

2 issues
  • App crashes on launch
  • Measurement point behaves erratically

Requested features

2 requests
  • Ability to calibrate the app
  • Option to change the display color

In-app purchases

3 purchases

RehabKit

Subscriptions2
  • Clinical Suite (1-month)7 Days trial$12.991 Month
  • Clinical Suite (1-year)7 Days trial$79.991 Year
One-time1
  • Clinical Suite (Lifetime)$249.99
10 purchases

Bubble Level

Subscriptions5
  • Spirit Level Premium – Monthly$2.991 Month
  • Bubble Level Premium - Weekly$2.997 Days
  • Bubble Level Premium - Monthly$5.991 Month
Show 2 more
  • Spirit Level Premium – Annual7 Days trial$14.991 Year
  • Bubble Level Premium - Annual7 Days trial$19.991 Year
One-time5
  • All features - No ads$1.99
  • Unlock all AR features$5.99
  • Discount Lifetime Premium$14.99
Show 2 more
  • Bubble Level PREMIUM Lifetime$19.99
  • Bubble Level - Lifetime Premium$29.99

Questions

Is RehabKit free?
RehabKit is free to download, with in-app purchases available.
Is Bubble Level free?
Bubble Level is free to download, with in-app purchases available.
Which has better reviews, RehabKit or Bubble Level?
RehabKit is rated higher. RehabKit averages 5.0 out of 5 from 82 ratings, while Bubble Level averages 4.5 from 721 ratings.
Do RehabKit or Bubble Level have ads?
Bubble Level shows ads; RehabKit does not.
Which is updated more often, RehabKit or Bubble Level?
RehabKit ships an update every 9 days, and Bubble Level weekly. Most recently, RehabKit was updated on November 6, 2026 and Bubble Level on November 7, 2026.

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