This & That vs Watch Over
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
This & That
This app analyzes your health data to uncover correlations and provide insights into exercise, diet, vital signs, and more. It presents complex statistical information in an easy-to-understand format.
- Correlates diverse health data types
- Analyzes exercise, diet, vitals, and more
- Calculates correlation coefficients and p-values
- Performs cross and lagged correlations
- Explains statistical data in simple terms
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This & That find correlations in your Health data to help you gain a deeper understanding. - Finds correlations between almost all Health app data types, including: - Exercise and activity - Dietary types (both macro and micro nutrients) - Body measurements and vital signs - Tracked symptoms - Reproductive health - Meditation and sleep stages - Environmental sound and headphone exposure - Daily weather (temperature, humidity, precipitation, etc) - Calculates and displays statistically appropriate information such as correlation coefficients, confidence intervals, and p-values. - Calculates cross correlations, lagged correlations for up to 60 days before and after, and also Granger causality. - Provides correlation analyses in layman's terms to make the statistical data accessible and understandable. Note: All app functionality requires an active free trial, active subscription, or Lifetime purchase.
Watch Over
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Keep your phone safe while you focus on your workout. Sentry Motion alerts your Apple Watch the moment your iPhone is touched, moved, or picked up—so you can train with confidence. Designed for the gym, pool, and any environment where your phone may be at risk. Movement detection with multiple sensitivity levels Instant haptic alerts on your Apple Watch Works even while the Workout app is running Easily enable or disable Sentry Mode Mute or dismiss alarms directly from your watch or phone Sentry Motion keeps watch over your phone—so you can keep watch over your goals.
Screenshots
Verdict
The clearest difference is price: This & That at Free against Watch Over's $3.99. Watch Over's advantage is in-app purchases (none vs 3) and iOS requirement (17.6 vs 26.0). On update cadence, 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
This & That is free to download; Watch Over costs $3.99 up front. This & That sells 3 in-app purchases, starting at $1.99 per month. Watch Over asks for nothing beyond the download.
This & That ships an update every 6 weeks, Watch Over every 2 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.
| Parameter | This & That | Watch Over |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 3.6 (9 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 6 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Requires iOS | 26.0 | 17.6 — better |
| Further details — not scored | ||
| Size | 12 MB | 17 MB |
| Age rating | 12+ | 4+ |
| Developer | Matthew Bruce Greenfield | Mustafa Samed Kasal |
In-app purchases
This & That
- Monthly subscription7 Days trial$1.991 Month
- Yearly subscription7 Days trial$17.991 Year
- Lifetime purchase$69.99
Watch Over
No in-app purchases









