ReadiSync by Fatigue Science vs XO
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
ReadiSync by Fatigue Science
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ReadiSync by Fatigue Science is a companion app for the Readi enterprise platform, designed to streamline the group syncing process of Readi wearable devices using an iPhone or iPad sync station. With ReadiSync, Readi program managers can: β’ Activate and pair Readi wearable devices to specific users β’ Automatically capture sleep data from nearby Readi devices via Bluetooth β’ Securely sync collected data to their organization's Readi platform Requirements: β’ A Readi account with Location Manager (or higher) access Supported Devices: β’ iPhones and iPads running iOS 13 or later
XO
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Using the XO-SOLE application, seamlessly connect to the XO-SOLE system to record, visualize, and store movement data directly to your insoles. Powered by XO-NANO's patented Smartfoamβ’ technology, XO-SOLE captures high-quality movement data without the limitations of traditional laboratory equipment. Whether you're conducting research in the lab or collecting data in real-world environments, XO-SOLE makes movement analysis more portable, efficient and accessible than ever before!
Screenshots
Verdict
ReadiSync by Fatigue Science and XO are too close to call on the numbers: across 6 compared parameters β price, update cadence, ads and in-app purchases among them β neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ReadiSync by Fatigue Science ships an update monthly, XO every 2 weeks. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.
| Parameter | ReadiSync by Fatigue Science | XO |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 2 weeks β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details β not scored | ||
| Size | 66 MB | 57 MB |
| Age rating | 4+ | 12+ |
| Developer | Fatigue Science | XOnano Smartfoam |
In-app purchases
ReadiSync by Fatigue Science
No in-app purchases
XO
No in-app purchases
Questions
Is ReadiSync by Fatigue Science free?
Is XO free?
Do ReadiSync by Fatigue Science or XO have ads?
Which is updated more often, ReadiSync by Fatigue Science or XO?
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