Comparison

大事计 vs Blink

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

Head to head
About

大事计

Features
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Yet another simple and elegant countdown app LICENSED APPLICATION END USER LICENSE AGREEMENT Terms of use EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy(User Service Agreement): https://appsfeedback.notion.site/User-Service-Agreement-and-Privacy-Policy-Support-2879a95f531c801a97b7fa832cb818b0

About

Blink

Features
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Blink is an offline light signaling app for sending SOS, preset phrases, and Morse-style flash patterns with your iPhone flashlight or screen. When you have no network, need a quiet way to get someone’s attention, or want a simple visual signal within sight range, Blink helps you send short, clear messages fast. It is designed for camping, hiking, night meetups, trail coordination, car-to-car reminders, and other short-range communication scenarios where sound or connectivity may not work well. You do not need to know Morse code before using Blink. Choose SOS, a preset phrase, or enter a short custom message, and the app converts it into a readable flash rhythm. Chinese text can be converted to pinyin before Morse encoding, and you can preview the rhythm before sending. Key Features SOS and preset signals • Send SOS and common emergency phrases quickly • 3-second countdown helps reduce accidental sends • Loop sending with clear stop controls • Live progress, current character, and rhythm display Two sending modes • Flashlight mode uses the rear LED for outdoor and night signaling • Screen mode uses full-screen light for close-range or quiet situations • Adjustable transmission speed for different distances and conditions Preset phrase library • Emergency, outdoor, medical, teamwork, silent communication, and direction phrases • Useful for common requests such as help, stay here, I am safe, need water, and more • Good for pre-arranged signals with friends, teammates, or family Custom messages and text signal tools • Turn short text into a Morse-style timing preview • Estimate transmission duration before sending • Large text, marquee, and flashing text modes for close-range silent cues Camera-assisted flash reading • Point your camera at a flashing light source to help read dot-dash rhythm • Useful for practice, testing, and nearby reception • Results depend on distance, alignment, brightness, motion, and ambient light Night mode and device protection • Red screen flash with reduced brightness for lower glare at night • Warnings or automatic fallback for heat and low battery situations • Pause protection during long repeated sending sessions • Auto-pause when the app goes to the background Blink Pro One-time purchase. No subscription. • Unlock all phrase categories • Save favorite phrases • Add custom phrases and longer custom messages • Customize screen flash colors • Access full history and quick resend • Use higher speed ranges • Adjust loop intervals Useful scenarios • Camping, hiking, and trail coordination • Night meetups and campsite signaling • Quiet, non-verbal reminders • Practice and testing for light-based signaling • Offline backup signaling when connectivity is unavailable Important safety note Blink is an auxiliary signaling tool. It does not contact emergency services, rescue agencies, or personal contacts. In a real emergency, use local emergency numbers, satellite SOS, a whistle, signal mirror, radio, or other more reliable rescue methods when available. Whether a light signal can be seen or understood depends on distance, obstacles, weather, ambient light, battery level, device brightness, receiver attention, and whether both sides understand the intended meaning. Do not rely on Blink as your only emergency option.

Screenshots

大事计4 screens
Blink4 screens

Verdict

The call

The clearest difference is update cadence: Blink at every 9 days against 大事计's every 2 months. 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. 大事计 sells 2 in-app purchases, starting at $1.99 per year and Blink sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

大事计 ships an update every 2 months, Blink every 9 days. The most recent releases landed on October 10, 2026 and October 5, 2026 respectively.

Scorecard1 real difference · 5 level
大事计 versus Blink: the parameters behind the verdict, then further details
Parameter大事计Blink
PriceFreeFree
Update frequencyEvery 2 monthsEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS18.017.0 — better
Further details — not scored
Size20 MB3 MB
Age rating4+4+
Developermin yao荣晖 丁

In-app purchases

2 purchases

大事计

Subscriptions1
  • 连续包年$1.991 Year
One-time1
  • 永久解锁$2.99
1 purchases

Blink

One-time1
  • Blink Pro Lifetime$1.99

Questions

Is 大事计 free?
大事计 is free to download, with in-app purchases available.
Is Blink free?
Blink is free to download, with in-app purchases available.
Do 大事计 or Blink have ads?
Neither 大事计 nor Blink shows ads.
Which is updated more often, 大事计 or Blink?
大事计 ships an update every 2 months, and Blink every 9 days. Most recently, 大事计 was updated on October 10, 2026 and Blink on October 5, 2026.

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