Comparison

Tell vs CoolGuard

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

Head to head
About

Tell

Features
Read full description

He left you on read. Then liked your story. Then texted "wyd" at 1am. What is he doing? Tell reads the conversation for you. Drop screenshots of the chat or paste it as is — Tell decodes what he's really saying, flags the games he's playing, and drafts your next move in words that sound like you. WHAT TELL DOES • The read — a straight verdict on what's actually going on: into you, bored, breadcrumbing, or playing you • His tells — the signals hiding in his texts: red flags, green flags, mixed signals, mind games • Your move — a reply drafted for what you want next: hook him harder, create distance, or get the truth • My voice — paste a few of your own messages once, and every draft sounds like you, not a robot BUILT FOR THE 1AM SPIRAL Stop forwarding screenshots to the group chat and waiting for opinions. Tell answers the questions you're actually asking: • Is he into me? • Am I overreacting? • Is something off — is he being shady? • Should I text back or let it breathe? PRIVATE BY DESIGN • No account, no sign-up, no feed • Your chat goes to the server only while it's being read — finished reads stay on your phone • Delete every read from your device in one tap Tell Premium unlocks unlimited reads with a 3-day free trial, then a weekly auto-renewing subscription. Payment is charged to your Apple ID account. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in App Store settings. Terms: https://lifewheel.us/tell/legal/#terms Privacy: https://lifewheel.us/tell/legal/#privacy

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.

Screenshots

Tell4 screens
CoolGuard4 screens

Verdict

The call

The clearest difference is rating: CoolGuard at 4.7 against Tell's 1.0. CoolGuard also leads on ratings volume (3 vs 1). 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. Tell sells 1 in-app purchase, starting at $6.99 per 7 days and CoolGuard sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

CoolGuard holds the better App Store score, 4.7 against 1.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Scorecard2 real differences · 7 level
Tell versus CoolGuard: the parameters behind the verdict, then further details
ParameterTellCoolGuard
PriceFreeFree
Rating1.0 (1 ratings)4.7 (3 ratings) — better
Number of ratings13 — better
Update frequency—Weekly
AdsNoNo
In-app purchasesYesYes
Monetization—Free
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size4 MB7 MB
Age rating9+4+
DeveloperOleksandr StepanovNorbert Pentek

In-app purchases

1 purchases

Tell

Subscriptions1
  • Tell Premium$6.997 Days
3 purchases

CoolGuard

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

Questions

Is Tell free?
Tell is free to download, with in-app purchases available.
Is CoolGuard free?
CoolGuard is free to download, with in-app purchases available.
Which has better reviews, Tell or CoolGuard?
CoolGuard is rated higher. Tell averages 1.0 out of 5 from 1 ratings, while CoolGuard averages 4.7 from 3 ratings.
Do Tell or CoolGuard have ads?
Neither Tell nor CoolGuard shows ads.

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