Comparison

QuietAlert vs Silent Flash Timer

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

Head to head
About

QuietAlert

This utility app notifies you of timer completion using LED flashes and vibration, ideal for quiet environments like libraries or trains. It offers customizable vibration frequencies and optional sound alerts, even playing through headphones.

Highlights
  • LED flash and vibration alerts
  • Customizable vibration frequency
  • Background operation
  • Optional beep on completion
  • Headphone-only sound output
  • Custom alarm sound support
  • Widget alarm stop
Read full description

"QuietAlert" tells the end of timer LED Flash and vibration. Using the "QuietAlert", such as libraries and train in unmentionable sounds quieter and where noise is audible, even terminate the timer can with vibration and LED flashes. (models without the vibrator, iPod Touch and iPad will sound. ) Mode button long press then vibration frequency (1-9) can be set. "QuietAlert" works in the background. You needn't start the app at all times. However, you must have set a LED Flash app to front. When your app to front screen, falling into place. You can reduce power consumption to turn off screen in doing so. As an option provides the following features. -Beep on completion of a timer. -Play a sound from the headphones only. -You can use alarm sound file yourself. -You can stop the alarm from the widget. Give it a try. Poor English, I'm sorry.

About

Silent Flash Timer

This app provides a silent timer that uses screen flashes for notifications instead of sound or vibration. It's ideal for focused work, quiet environments like libraries, or for users sensitive to auditory alerts, ensuring time management without disruption.

Highlights
  • Screen flash notifications
  • No sound or vibration alerts
  • Ideal for focused work
  • Suitable for quiet environments
  • User-friendly interface
  • Supports time management
Features
Read full description

In environments like the workplace or a cafe, even setting a timer to vibrate can feel intrusive. However, with this app, instead of audio or vibration alerts, your screen will flash to let you know when the set time has come. This app could be useful in the following situations: During focused work: Ideal for managing time during work or study. When the set time has passed, you will be notified with a noticeable screen flash, but there will be no noise or vibration to distract others. In environments where audible notifications are not allowed: In quiet places like libraries or meeting rooms, conventional timers are not usable. With this app, you can check the passing of time with a non-disturbing screen flash. When you want to avoid stress from sound and vibration: This app is perfect for people sensitive to sound and vibration or those who want to maintain a pleasant silence. Only when needed, the screen will flash quietly, not disturbing your focus. This app quietly yet effectively supports your time management. Adapting to each environment and need, it offers a user-friendly interface for easy time management. For anyone needing quiet notifications, this app is the ultimate solution. ■ Subscription Please refer to the following links for the terms and conditions related to the use of the subscription: Privacy Policy: https://neudesignlab.notion.site/Privacy-Policy-117364cad9f7809eab89cfe9d30764d5?pvs=74 Terms of Use: https://neudesignlab.notion.site/Terms-of-Use-117364cad9f78080bac2e540af0330bb

Screenshots

QuietAlert4 screens
Silent Flash Timer4 screens

Verdict

The call

The clearest difference is rating: Silent Flash Timer at 4.4 against QuietAlert's 2.8. Silent Flash Timer also leads on update cadence (every 2 weeks vs every 12 months) and review sentiment (67% vs 44%). QuietAlert's advantage is ads (none vs shown). On price, ratings volume, in-app purchases and monetization model 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. QuietAlert sells 3 one-off in-app purchases and Silent Flash Timer sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Silent Flash Timer holds the better App Store score, 4.4 against 2.8. Both are backed by a comparable volume of ratings — 16 and 9 respectively. Written reviews point the same way: 44% of QuietAlert's written reviews are positive against 67% of Silent Flash Timer's.

UpkeepUpdate frequency

QuietAlert ships an update every 12 months, Silent Flash Timer every 2 weeks. The most recent releases landed on July 18, 2026 and September 8, 2026 respectively.

Scorecard5 real differences · 5 level
QuietAlert versus Silent Flash Timer: the parameters behind the verdict, then further details
ParameterQuietAlertSilent Flash Timer
PriceFreeFree
Rating2.8 (16 ratings)4.4 (9 ratings) — better
Positive reviews43.8% of reviews66.7% of reviews — better
Number of ratings16 — better9
Update frequencyEvery 12 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS26.017.6 — better
Further details — not scored
Size18 MB11 MB
Age rating4+4+
DeveloperYasushi SakaiNEUDESIGNLAB, LLC

Customer experience

QuietAlert

All ratings16 ratings
Positive43.8%
Neutral0.0%
Negative56.3%
Written reviews32 reviews
Positive43.8%
Neutral9.4%
Negative46.9%

Silent Flash Timer

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews6 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

3 purchases

QuietAlert

One-time3
  • Sound Option$1.99
  • Alarm Option$1.99
  • Widget Option$1.99
4 purchases

Silent Flash Timer

Subscriptions2
  • 1 Month Plan$0.991 Month
  • Premium - Yearly$4.991 Year
One-time2
  • Lifetime Ad Removal Discounted$5.99
  • Lifetime Ad Removal$9.99

Questions

Is QuietAlert free?
QuietAlert is free to download, with in-app purchases available.
Is Silent Flash Timer free?
Silent Flash Timer is free to download, with in-app purchases available.
Which has better reviews, QuietAlert or Silent Flash Timer?
Silent Flash Timer is rated higher. QuietAlert averages 2.8 out of 5 from 16 ratings, while Silent Flash Timer averages 4.4 from 9 ratings.
Do QuietAlert or Silent Flash Timer have ads?
Silent Flash Timer shows ads; QuietAlert does not.
Which is updated more often, QuietAlert or Silent Flash Timer?
QuietAlert ships an update every 12 months, and Silent Flash Timer every 2 weeks. Most recently, QuietAlert was updated on July 18, 2026 and Silent Flash Timer on September 8, 2026.

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