Comparison

CoolGuard vs Message Receipts

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

Head to head
About

CoolGuard

This app monitors your phone's temperature, providing real-time heat levels and alerts to prevent performance issues and battery aging. It also functions as a customizable night clock with alarms and displays local weather information.

Highlights
  • Live heat level monitoring
  • Heat trend and log with map
  • Customizable alerts and cooling tips
  • Night clock with sleep mode
  • Multiple alarms with system integration
  • Outdoor weather display
  • Lock screen and Dynamic Island widgets
Features
Read full description

CoolGuard keeps an eye on your phone's heat — and at night, it's the clock on your nightstand. A hot iPhone runs slower, its battery ages faster, and in summer it heats up within moments in the sun or while gaming, navigating, or charging. CoolGuard shows you where your phone stands on a four-level scale (Normal, Slightly Warm, Hot, Critical), warns you in time, and tells you what to do. HEAT MONITORING • Live heat level on the main screen, with a color-coded ring and a quick tip • Heat Trend: 1-hour and 24-hour curves in a banded or clean style — drag your finger to read the details • Heat Log with calendar and map: when and where your phone got hot • Alerts from the level you choose: push notifications, sound alerts, quiet hours • Monitor Mode: background monitoring, with a Live Activity on the Lock Screen and in the Dynamic Island • Cooling tips and a carefully curated selection of active coolers NIGHT CLOCK AND ALARM • Sleep Mode: dark screen with just the clock and the outdoor temperature — three sizes, your choice of color • Alarms: up to 10, repeating daily; on iOS 26 and later they ring through the system alarm, even when your phone is silenced • Landscape view: big clock, swipeable alarm bar, brightness slider • Burn-in protection: slow pixel drift and dimming to keep your display safe • 12- or 24-hour clock, with seconds if you like WEATHER • Outdoor temperature, with today's and tomorrow's highs and lows • Weather face in the ring: the sun and moon travel around it from sunrise to sunset • A warning on dangerously hot days WIDGET • Small: thermometer, weather, battery level, clock • Medium: adds the heat trend curve and the date • Works on the Lock Screen, too BATTERY • Battery Health and cycle count, compared month by month with your phone's heat MORE • 50 languages, Celsius or Fahrenheit • Private by design: no ads, no analytics, no accounts — your Heat Log never leaves your phone • Free — you can support development with a tip Note: iOS doesn't expose exact temperatures to apps — CoolGuard shows Apple's four official thermal levels.

About

Message Receipts

Features
Read full description

Message Receipts lets you create realistic looking prop iMessage screenshots. All features of iMessage are supported including: • Reactions • SMS and iMessage • Replies • Images • Encryption status • Do not disturb mode • Group chats • Chat names and images • Avatar images The iMessage thread that the app creates exactly follows the same display logic as the real iMessage app, including: • Correct timestamp frequency • Colors • Spacing, margins, padding • Sizing • Fonts In short, it looks exactly like a real iMessage thread would. Why would someone want to do this? Here's a few reasons: • Motion picture and photography prop • Advertisements • Memes • Jokes on friends • Social media content Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

CoolGuard4 screens
Message Receipts4 screens

Verdict

The call

The clearest difference is update cadence: Message Receipts at daily against CoolGuard's weekly. CoolGuard's advantage is iOS requirement (17.0 vs 26.0). On price, 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

Both are free to download. CoolGuard sells 3 one-off in-app purchases and Message Receipts sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CoolGuard ships an update weekly, Message Receipts daily. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 7 level
CoolGuard versus Message Receipts: the parameters behind the verdict, then further details
ParameterCoolGuardMessage Receipts
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyWeeklyDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better26.0
Further details — not scored
Size7 MB3 MB
Age rating4+4+
DeveloperNorbert PentekWNM Live

In-app purchases

3 purchases

CoolGuard

One-time3
  • Small tip$0.99
  • Medium tip$2.99
  • Large tip$9.99
1 purchases

Message Receipts

One-time1
  • Unlock Screenshots$9.99

Questions

Is CoolGuard free?
CoolGuard is free to download, with in-app purchases available.
Is Message Receipts free?
Message Receipts is free to download, with in-app purchases available.
Do CoolGuard or Message Receipts have ads?
Neither CoolGuard nor Message Receipts shows ads.
Which is updated more often, CoolGuard or Message Receipts?
CoolGuard ships an update weekly, and Message Receipts daily. Most recently, CoolGuard was updated on October 6, 2026 and Message Receipts on October 10, 2026.

Other comparisons