Comparison

Isobar vs px.

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

Head to head
About

Isobar

Design and order custom-fit compression socks from home. This app uses your phone's camera to create a 3D model of your legs for a perfect fit, helping to reduce DVT risk and alleviate travel-related leg discomfort.

Highlights
  • Custom compression sock ordering
  • 3D leg scanning via mobile video
  • Personalized fit and style selection
  • Direct-to-door delivery
  • DVT risk reduction
  • Alleviate heavy legs and jet lag
Features
Read full description

Benefit from Isobar’s unmatched Custom Travel Compression Socks, all from the comfort of your own home and delivered to your door with the new Isobar app. Reduce your risk of DVT, alleviate that post-travel heavy-leg feeling and minimise jet lag without compromising your comfort. How it works: β€’ Take a video of your legs using your mobile device β€’ We generate an accurate 3D model of your unique anatomy β€’ Select your style and colour and order through the app β€’ Your socks are custom designed to fit you β€’ We manufacture your socks to order in Manchester β€’ Delivery direct to your door Risks of long haul travel: β€’ When we sit for long periods, blood pools in our legs β€’ Blood pooling can lead to a blood clot or deep vein thrombosis (DVT) β€’ Blood clots can be fatal if not caught and travel to your lungs (pulmonary embolism) β€’ 4-10% of long-haul travellers will develop an asymptomatic DVT Why choose Isobar Custom Made Compression Socks: β€’ Studies have show off-the-shelf flight socks don’t fit 98% of people β€’ 54% had a negative effect because they are too tight β€’ Custom made for you to guarantee a perfect fit every time β€’ Machine washable and certified to maintain their efficacy after washing β€’ Available in a range of colours Proudly developed, designed and manufactured in Manchester, UK. Isobar Compression are official suppliers and partners of: β€’ Royal Ballet β€’ INEOS Grenadiers Cycling Team β€’ British Cycling β€’ INEOS Britannia, Challenger of Record for the 37th America’s Cup

About

px.

Features
Read full description

For the over-equipped, under-coached. You already have the watch, the apps and the data. What you have never had is one coach that understands all of it and turns it into one clear decision about today. px is one coach for training, mind and nutrition. It builds your plan around what you are working towards, then adjusts it each day based on your sleep, training, calendar and how you are actually doing. px tells you what to do today, and why. ONE COACH. ONE DIRECTION. Tell px what you are working towards, what your week looks like and what usually gets in the way. px turns that into a plan. Then it keeps adjusting the plan as your life changes, without losing sight of where you are going. Slept well? The hard session stays. Short night? px eases off and tells you why. Busy day? Your plan adapts. You do not have to interpret a dashboard of scores and decide what matters. px makes the decision with you. YOUR DAY MOVE Training built around your goal, your equipment and the day you are having. Strength, cardio and mobility sessions adapt as you progress, with exercise guidance so you know what to do and how to do it. MIND Meditation and breathwork selected for the day you are having. From five minutes to longer sessions, px helps you build the mental side of performance alongside the physical. FUEL Meals, macros and recipes built around your training, preferences and goals. Log by search, barcode, photo or simply tell px what you ate. See what your day needs and get practical ways to close the gap. KNOW WHERE YOU ARE GOING Your work should mean something. px gives you a clear picture of where you are in your journey, what you have achieved and what you are working towards. Follow your Pursuits, phases, benchmarks, personal bests and milestones as you move forward. Your biggest competitor is your previous self. ASK px Your coach is always there. Ask px by text or voice about training, nutrition, sleep, recovery, mindset or your plan. Change today's session. Move a workout. Log a meal. Understand your data. Ask why your plan changed. px knows your plan, your data and your recent conversations, so the answer is built around you. Ask px is AI software, not a person. UNDERSTAND YOUR DATA px brings your health and performance data together and turns it into something useful. See your sleep, HRV, resting heart rate, training load, recovery and more alongside the decisions px makes from them. When your data cannot support a conclusion, px shows you the gap, never a guess. Connect Apple Health and more than 20 watches, rings and training apps, including Garmin, Oura, WHOOP, Fitbit and Polar. TRAIN WITH YOUR PEOPLE Progress is personal, but you do not have to do it alone. Pair with friends or build a crew. Share progress, personal bests and achievements, stay accountable and keep moving forward together. YOUR DATA Your data is never sold and is never used by our AI providers to train their models. AI features require your consent, and Private Mode keeps a conversation out of px's memory. Export, pause or delete your data whenever you like. The app, the coach, sessions, recipes and meditations all speak 15 languages. px is not a medical device and does not diagnose, treat, cure or prevent any medical condition. START WITH px Start with a free trial and experience your first week with px. The trial is seven days, once per Apple ID. After it, px needs a membership; there is no free version. Choose a monthly or yearly membership, with everything included. Payment is charged to your Apple ID at confirmation of purchase. Your subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel your membership at any time in your App Store account settings. Terms of Use (EULA): https://pxmembership.com/terms Privacy Policy: https://pxmembership.com/privacy

Screenshots

Isobar3 screens
px.4 screens

Verdict

The call

The clearest difference is in-app purchases: Isobar at none against px.'s 2. px.'s advantage is update cadence (every 3 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. px. sells 2 in-app purchases, starting at $29.99 per month. Isobar asks for nothing beyond the download.

UpkeepUpdate frequency

Isobar ships an update every 2 months, px. every 3 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard2 real differences Β· 6 level
Isobar versus px.: the parameters behind the verdict, then further details
ParameterIsobarpx.
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 2 monthsEvery 3 days β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
MonetizationFreeβ€”
DevicesiPhone, iPadiPhone, iPad, Apple Watch β€” better
Requires iOS16.416.4
Further details β€” not scored
Size73 MB250 MB
Age rating4+17+
DeveloperAdvanced Therapeutic Materials LtdPursue Excellence Ltd

In-app purchases

None

Isobar

No in-app purchases

2 purchases

px.

Subscriptions2
  • px membership: monthly7 Days trial$29.991 Month
  • px membership: annual7 Days trial$199.001 Year

Questions

Is Isobar free?
Isobar is free to download, with no in-app purchases.
Is px. free?
px. is free to download, with in-app purchases available.
Do Isobar or px. have ads?
Neither Isobar nor px. shows ads.
Which is updated more often, Isobar or px.?
Isobar ships an update every 2 months, and px. every 3 days. Most recently, Isobar was updated on October 24, 2026 and px. on October 28, 2026.

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