Comparison

This & That vs Watch Over

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

Watch Over

Features
Read full description

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

This & That4 screens
Watch Over4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
This & That versus Watch Over: the parameters behind the verdict, then further details
ParameterThis & ThatWatch Over
PriceFree — better$3.99
Rating3.6 (9 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings9 — better—
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, Apple Watch
Requires iOS26.017.6 — better
Further details — not scored
Size12 MB17 MB
Age rating12+4+
DeveloperMatthew Bruce GreenfieldMustafa Samed Kasal

In-app purchases

3 purchases

This & That

Subscriptions2
  • Monthly subscription7 Days trial$1.991 Month
  • Yearly subscription7 Days trial$17.991 Year
One-time1
  • Lifetime purchase$69.99
None

Watch Over

No in-app purchases

Questions

Is This & That free?
This & That is free to download, with in-app purchases available.
Is Watch Over free?
Watch Over costs $3.99, with no in-app purchases.
Do This & That or Watch Over have ads?
Neither This & That nor Watch Over shows ads.
Which is updated more often, This & That or Watch Over?
This & That ships an update every 6 weeks, and Watch Over every 2 months. Most recently, This & That was updated on October 21, 2026 and Watch Over on October 24, 2026.

Other comparisons