Comparison

SAI Alerts vs Water Temperature

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

Head to head
About

SAI Alerts

Features
Read full description

The SAI Platform is an industry leading machine vision platform tailored for the challenges of retail. Using feeds from existing in-store cameras, retailers can measure, deter and ultimately prevent losses throughout the store, including at assisted and self-service checkouts. The SAI Alerts app takes the data gathered by the platform and turns it into actionable insights for store managers, colleagues and security officers. The return on investment is compelling and the improvements in store operations are immediate.

About

Water Temperature

Monitor and record water temperatures directly from your Apple Watch. Get real-time readings, switch between units, and track your session duration. Ideal for water sports enthusiasts and anyone interested in water conditions.

Highlights
  • Real-time temperature monitoring
  • Fahrenheit/Celsius unit switching
  • Accurate temperature readings
  • Session timer
  • Min/Max temperature recording
  • Latest reading display
  • Dive Mode integration
Features
Read full description

The Water Temperature app is designed to help you monitor and record water temperatures using your Apple Watch. This app is perfect for surfers, swimmers, ice-bathers, and anyone wants water temperature readings in real-time. Key Features: - Real-Time Temperature Monitoring: Instantly view the current water temperature on your Apple Watch. - Temperature Units: Easily switch between Fahrenheit and Celsius. - Temperature Accuracy: Provides accurate readings with a ± precision. - Session Timer: Track the duration of your water activities with the built-in timer. - Min/Max Temperature Recording: Record and review the minimum and maximum water temperatures during your session. - Latest Reading Display: Always displays the most recent temperature reading and how long ago it was measured when out of the water. - Dive Mode Integration: Easily set up Dive mode using the Action button for quick access during water activities. Usage Instructions: 1. Install the Water Temperature app on your Apple Watch. 2. Enable the app in your settings to start monitoring water temperatures. 3. Switch to the Water Temperature app on your watch to begin recording temperatures. 4. View real-time temperature updates directly on your watch face. 5. Use the session timer to keep track of the duration of your activities. 6. Review the minimum and maximum temperatures recorded during your session. 7. Configure the Action button to quickly launch Dive mode for underwater activities by following the setup instructions in your watch settings. Note: This app is available only on devices with a Depth Gauge and Water Temperature Sensor. See Measure underwater temperature, duration, and depth on Apple Watch for more information: https://support.apple.com/guide/watch/measure-underwater-temperature-duration-depth-apd9073c83d6/watchos WARNING: Underwater activities are risky. To reduce the risk of serious or fatal injury, read and follow all instructions and warnings in the Apple Watch Ultra User Guide. THIS APP IS NOT A DIVE COMPUTER AND IS INTENDED FOR SURFACE LEVEL ACTIVITY ONLY. Enhance your water activities with accurate and reliable water temperature monitoring. Download the Water Temperature app now and start tracking!

Screenshots

SAI Alerts4 screens
Water Temperature3 screens

Verdict

The call

The clearest difference is price: SAI Alerts at Free against Water Temperature's $2.99. SAI Alerts also leads on update cadence (every 2 months vs every 14 months) and iOS requirement (13.4 vs 17.0). On ads, in-app purchases 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

SAI Alerts is free to download; Water Temperature costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SAI Alerts ships an update every 2 months, Water Temperature every 14 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard3 real differences · 7 level
SAI Alerts versus Water Temperature: the parameters behind the verdict, then further details
ParameterSAI AlertsWater Temperature
PriceFree — better$2.99
Rating—3.8 (6 ratings) — better
Positive reviews—16.7% of reviews
Number of ratings—6 — better
Update frequencyEvery 2 months — betterEvery 14 months
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS13.4 — better17.0
Further details — not scored
Size27 MB2 MB
Age rating4+4+
DeveloperSAI GroupsAaron Satterfield

In-app purchases

None

SAI Alerts

No in-app purchases

None

Water Temperature

No in-app purchases

Questions

Is SAI Alerts free?
SAI Alerts is free to download, with no in-app purchases.
Is Water Temperature free?
Water Temperature costs $2.99, with no in-app purchases.
Do SAI Alerts or Water Temperature have ads?
Neither SAI Alerts nor Water Temperature shows ads.
Which is updated more often, SAI Alerts or Water Temperature?
SAI Alerts ships an update every 2 months, and Water Temperature every 14 months. Most recently, SAI Alerts was updated on November 3, 2026 and Water Temperature on November 4, 2026.

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