Comparison

High Frequency Highway vs LastLine

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

Head to head
About

High Frequency Highway

Explore a library of unique sounds and a binaural beat generator designed to enhance sleep, focus, and relaxation. This app guides users toward higher states of awareness, promoting emotional well-being and inner peace through meditation and sound.

Highlights
  • Unique audios
  • Sleep sounds & melodies
  • Binaural beat generator
  • High Frequency Hub
  • User-friendly interface
  • Stress relief
  • Emotional well-being
Features
Read full description

Sound and frequencies to help you sleep, focus, relax and more! Our unique library of sounds and our binaural beat generator is the gem you're looking for. Play our carefully selected sounds, and you will sleep like a baby. Enjoy the high-quality sleep sounds and wake up refreshed. The purpose of High Frequency Highway is to guide you to the higher states of awareness you desire. We restore an ancient balance through meditation and sleep. The simple app can help you grow your emotional well-being through deep relaxation and meditation. Remove your stress and replace it with an abundance of inner peace. Features: - Unique audios - Sleep sounds & melodies - Binaural beat frequency generator - Simple and user-friendly interface - High Frequency Hub of global information that will empower you and make you grateful to be on earth Privacy Policy: https://www.highfrequencyhw.com/privacyprivacy-policy Terms Of Use: https://www.highfrequencyhw.com/privacyterms-conditions & https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

LastLine

Features
Read full description

Last Line is a memento mori app that counts down your remaining days — and asks you to write just one line each day. No journal. No diary. Just one line. As if today were your last. HOW IT WORKS • Enter your birth date. The app calculates your remaining days based on actuarial life expectancy data. • Every day, you receive a philosophical question — drawn from Stoicism, Zen Buddhism, and Existentialism. • Write one line. That's it. One line per day. 1,000 QUESTIONS From Marcus Aurelius to Kierkegaard. From Zen koans to Camus. Each question is designed to cut through noise and reach what matters. "If this were your last morning, what would you leave unsaid?" "What are you pretending not to know?" "Who would you call if you had one hour left?" YOUR COUNTDOWN A simple number. The estimated days you have left. It doesn't lie. It doesn't comfort. It just counts. FAMOUS LAST WORDS The app opens with real deathbed quotes from Steve Jobs, Oscar Wilde, Beethoven, and others. Their last words. Soon, yours. FEATURES • Death countdown based on life expectancy data • 1,000+ unique daily questions from philosophy and contemplative traditions • One-line daily entry — minimal, intentional • Staggered fade-in animations and haptic feedback • Pure black UI — no distractions • All data stored locally on your device LAST LINE PRO • Life prediction based on personal habits (smoking, exercise, sleep, stress) • Expanded question library • Home screen widget Built for people who find meaning in brevity, darkness, and honesty. Your days are numbered. Make each line count. Terms of Use: https://lastline.day/terms Privacy Policy: https://lastline.day/privacy

Screenshots

High Frequency Highway4 screens
LastLine4 screens

Verdict

The call

The clearest difference is update cadence: LastLine at every 4 days against High Frequency Highway's every 2 weeks. LastLine also leads on iOS requirement (13.0 vs 17.0). High Frequency Highway's advantage is chart position (#189 vs unranked). 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. High Frequency Highway sells 10 in-app purchases, starting at $1.99 per 7 days and LastLine sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

High Frequency Highway ships an update every 2 weeks, LastLine every 4 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 8 level
High Frequency Highway versus LastLine: the parameters behind the verdict, then further details
ParameterHigh Frequency HighwayLastLine
PriceFreeFree
Rating4.7 (695 ratings) — better—
Positive reviews63.1% of reviews—
Number of ratings695 — better—
Update frequencyEvery 2 weeksEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
Best chart rank#189 — better—
DevicesiPhoneiPhone, iPod — better
Requires iOS17.013.0 — better
Further details — not scored
Size209 MB32 MB
Age rating4+4+
DeveloperJ JohnsonKosei Sakaguchi

Bugs and requests

High Frequency Highway

Reported bugs

25 issues
  • App crashes randomly
  • App is glitchy
  • Headphones disconnect when using 'Read Your Frequency'
  • Subscription not recognized after purchase
  • App crashes immediately after opening
Show 20 more
  • Cannot log in or restore purchases after getting a new phone
  • Error when trying to change password
  • Cannot register due to confirmation button being covered by keyboard
  • App asks to subscribe even after starting a free trial
  • App crashes after a few minutes of use
  • Cannot upgrade to paid version
  • App refuses to allow access to premium features
  • App closes when cancelling notifications
  • Paid subscription not recognized
  • Headphones don't connect or produce sound
  • App is buggy and buttons are not clickable
  • App crashes when pressing the 3 lines menu
  • Inconsistent continuity of frequency playback
  • Buzzing noise in some frequency recordings
  • App signs out and requires reinstallation to log in
  • App crashes frequently
  • App is buggy and closes when pressing a specific button
  • App doesn't loop sounds correctly
  • App not accessible on MacBook or computer
  • App crashes when trying to open it

Requested features

11 requests
  • Offline mode
  • Website/desktop version
  • More content within specific categories (e.g., sleep, relief)
  • Longer track options
  • Ability to loop sounds
Show 6 more
  • More information on frequencies and how to maximize use
  • Fix for the confirmation button being covered by the keyboard
  • Fix for saved frequencies not saving
  • Fix for the button that closes the app
  • Fix for pop-up notifications every time the app is opened
  • Add remote viewing frequency

LastLine

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

High Frequency Highway

Subscriptions3
  • BePositive Premium3 Days trial$1.997 Days
  • Premium HF User3 Days trial$6.991 Month
  • Special offer 38% off7 Days trial$59.991 Year
One-time7
  • One-time unlock of a paid creation.$0.99
  • Paid track$0.99
  • Unlock Paid Sound – $1.99$1.99
Show 4 more
  • Unlock Sound$2.99
  • Unlock Sound$3.99
  • paidplaylist$9.99
  • Septa Sync$39.99
2 purchases

LastLine

Subscriptions1
  • LastLine Pro Monthly$1.991 Month
One-time1
  • LastLine Pro Lifetime$19.99

Questions

Is High Frequency Highway free?
High Frequency Highway is free to download, with in-app purchases available.
Is LastLine free?
LastLine is free to download, with in-app purchases available.
Do High Frequency Highway or LastLine have ads?
Neither High Frequency Highway nor LastLine shows ads.
Which is updated more often, High Frequency Highway or LastLine?
High Frequency Highway ships an update every 2 weeks, and LastLine every 4 days. Most recently, High Frequency Highway was updated on November 7, 2026 and LastLine on October 31, 2026.

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