Comparison

第77回鯱光祭 vs Hz Lab

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

Head to head
About

第77回鯱光祭

This app guides visitors through the annual school festival, "Shokokukai," at Asahigaoka High School. It provides easy access to the festival program, class presentation schedules, and performance timings for students and guests. Discover all the convenient features to navigate the event.

Highlights
  • Festival program details
  • Class presentation schedules
  • Performance timings
  • Event information
  • Visitor guidance
Features
Read full description

旭丘高校の学校祭、鯱光祭(ここうさい)の生徒会公式アプリです ◆2025年度鯱光祭アプリが新しくなって登場!◆ 来場者の方に旭丘高校の鯱光祭を丁寧に案内します! プログラムの内容をいつでも確認! クラス発表一覧でどこに行くかこれで確認! 三年生の劇や有志団体発表のスケジュールを見れる! 体育祭や討論会の情報もこれで確認! その他、便利な機能が多数! 【アプリについて】 ・このアプリは2025年度旭丘高校の学校祭である第77回鯱光祭のために制作されました。 ・旭丘高校に在学中の生徒以外の方は一部の機能が制限されることに予めご了承下さい。 ・学校祭のプログラムとしてご利用ください。

About

Hz Lab

Features
Read full description

Hz Lab puts mosquito tones, speaker water eject and a frequency generator into one simple tool. No ads. No subscription. The paid features are a single one-time purchase. MOSQUITO TONE Nine steps from 8,000Hz to 20,000Hz, playing the moment you tap. Every step is free. Each frequency comes with a rough guide to the age that usually still hears it, which makes it easy to compare with friends and family. HEARING CHECK Tones play from low to high and you answer "I hear it" or "I don't". You get a rough idea of where your hearing tops out. WATER EJECT For when water gets into the speaker. Pulsed low tones around 165Hz move the diaphragm far enough to help push droplets out. A countdown and waveform show you exactly how long is left. FREQUENCY GENERATOR Anything from 20Hz to 20,000Hz, by slider or by typing the number. The full range is free with a sine wave. SOLFEGGIO AND BINAURAL BEATS Solfeggio frequencies from 174Hz to 963Hz, plus binaural beats that play slightly different tones in each ear. HZ LAB PRO (one-time purchase) - Tune in 1Hz steps - Square, triangle and sawtooth waveforms - Strong and quiet water eject courses, with adjustable timing and range - Full control over binaural beats - All nine Solfeggio frequencies - Unlimited presets (the free version keeps three) - Sleep timer and background playback - Hearing check history and per-ear testing Pay once and keep it. Nothing auto-renews. WHAT WE TELL YOU UP FRONT - The iPhone's built-in speaker drops off sharply above about 16,000Hz. Use headphones for high frequencies. The app says the same thing. - Water eject does not guarantee that all water is removed, does not improve water resistance, and does not repair a water-damaged device. - The hearing check and age guidance are informational only, not a substitute for a medical hearing test. PROTECTING YOUR HEARING High tones rarely feel loud but still strain your ears. By default Hz Lab caps the volume above 15,000Hz and while headphones are connected (adjustable in Settings), and playback stops automatically if your headphones are unplugged. PRIVACY No account needed. No personal data is collected at all. No advertising or analytics SDKs. Presets and hearing check results stay on your device.

Screenshots

第77回鯱光祭4 screens
Hz Lab4 screens

Verdict

The call

The clearest difference is in-app purchases: 第77回鯱光祭 at none against Hz Lab's 1. 第77回鯱光祭 also leads on update cadence (daily vs every 2 weeks) and device support (3 vs 1). On price and ads 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. Hz Lab sells 1 one-off in-app purchase. 第77回鯱光祭 asks for nothing beyond the download.

UpkeepUpdate frequency

第77回鯱光祭 ships an update daily, Hz Lab every 2 weeks. The most recent releases landed on October 8, 2026 and September 29, 2026 respectively.

Scorecard4 real differences · 4 level
第77回鯱光祭 versus Hz Lab: the parameters behind the verdict, then further details
Parameter第77回鯱光祭Hz Lab
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyDaily — betterEvery 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size212 MB2 MB
Age rating4+4+
DeveloperAsahigaoka high schoolDaishi Sugawara

In-app purchases

None

第77回鯱光祭

No in-app purchases

1 purchases

Hz Lab

One-time1
  • Hz Lab Pro$1.99

Questions

Is 第77回鯱光祭 free?
第77回鯱光祭 is free to download, with no in-app purchases.
Is Hz Lab free?
Hz Lab is free to download, with in-app purchases available.
Do 第77回鯱光祭 or Hz Lab have ads?
Neither 第77回鯱光祭 nor Hz Lab shows ads.
Which is updated more often, 第77回鯱光祭 or Hz Lab?
第77回鯱光祭 ships an update daily, and Hz Lab every 2 weeks. Most recently, 第77回鯱光祭 was updated on October 8, 2026 and Hz Lab on September 29, 2026.

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