Comparison

Buzz Off Shield vs Callme Timer

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

Head to head

Ultrasonic Shield

Call Alarm Reminders

About

Buzz Off Shield

Features

Read full description

Let “Buzz Off” help you avoid intrusions from stray dogs, flies, mosquitoes, and rats. Download now! Discover more frequency functions yourself!

About

Callme Timer

Features

Read full description

Callme Timer is a phone-call style alarm app for mornings and scheduled reminders. Set quick alarms in seconds, create custom countdowns up to 24 hours, and trigger high-priority reminders in a familiar incoming-call format. Free: Unlimited daily call alarms Quick triggers and custom countdown Scene slots for common reminders Pro: Schedule Timer (different times for each weekday) Precise Timer and specific-time alarms Call Queue for consecutive reminder calls Callback Details and auto-hangup controls My Recordings for custom reminder audio Designed for focus and time management.

Screenshots

Buzz Off Shield2 screens

Callme Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: Buzz Off Shield at none against Callme Timer's 1. Callme Timer's advantage is iOS requirement (16 vs 18.4). On price, update cadence, ads 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. Callme Timer sells 1 one-off in-app purchase. Buzz Off Shield asks for nothing beyond the download.

UpkeepUpdate frequency

Buzz Off Shield ships an update every 3 weeks, Callme Timer monthly. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 4 level

Buzz Off Shield versus Callme Timer: the parameters behind the verdict, then further details
Parameter	Buzz Off Shield	Callme Timer
Price	Free	Free
Update frequency	Every 3 weeks — better	Monthly
Ads	No	No
In-app purchases	No — better	Yes
Devices	iPhone, iPad	iPhone, iPad, iPod — better
Requires iOS	18.4	16 — better
Further details — not scored
Size	26 MB	4 MB
Age rating	4+	17+
Developer	Pochang Chen	胜荇杨

In-app purchases

None

Buzz Off Shield

No in-app purchases

1 purchases

Callme Timer

One-time1

Pro lifetime$0.99

Questions

Is Buzz Off Shield free?

Buzz Off Shield is free to download, with no in-app purchases.

Is Callme Timer free?

Callme Timer is free to download, with in-app purchases available.

Do Buzz Off Shield or Callme Timer have ads?

Neither Buzz Off Shield nor Callme Timer shows ads.

Which is updated more often, Buzz Off Shield or Callme Timer?

Buzz Off Shield ships an update every 3 weeks, and Callme Timer monthly. Most recently, Buzz Off Shield was updated on October 14, 2026 and Callme Timer on October 2, 2026.