Comparison

Ding Dong Doorbell vs Contraction Timer

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

Head to head
About

Ding Dong Doorbell

Features
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Never miss a visitor with Ding Dong - the simple smart doorbell that works anywhere. With Ding Dong, visitors scan a QR code to ring your doorbell and you are notified on your phone. - Instant notifications when someone rings your doorbell - No wires, no batteries, no WiFi config - just a QR code - Perfect for homes, apartments, offices, and temporary setups - Cover multiple entrances with ease - Works whether you're on the couch or across town Get your weatherproof QR code through the app or print one yourself.

About

Contraction Timer

Features
Read full description

Contraction Timer by Wavely helps you track your contractions easily and accurately during labor. When contractions start, timing them is one of the most important things you can do. Contraction Timer makes it simple – just tap to start and stop, and the app does the rest. FEATURES • One-tap timing – start and stop with a single tap • Automatic tracking of duration, frequency and intervals • Clear overview of your contraction history • Know when to go to the hospital based on the 5-1-1 rule • Clean, calm design for stressful moments • Share your contraction log with your partner or midwife WHEN TO USE • When you feel your first contractions • To distinguish real labor from Braxton Hicks • To track patterns and know when to head to the hospital Designed by parents, for parents. Simple, reliable, and there when you need it most. Download now and be ready for the big day!

Screenshots

Ding Dong Doorbell3 screens
Contraction Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: Ding Dong Doorbell at none against Contraction Timer's 1. Ding Dong Doorbell also leads on iOS requirement (12.0 vs 17.0). Contraction Timer's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Contraction Timer sells 1 one-off in-app purchase. Ding Dong Doorbell asks for nothing beyond the download.

UpkeepUpdate frequency

Ding Dong Doorbell ships an update every 2 months, Contraction Timer every 3 weeks. The most recent releases landed on October 6, 2026 and September 27, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Ding Dong Doorbell versus Contraction Timer: the parameters behind the verdict, then further details
ParameterDing Dong DoorbellContraction Timer
PriceFreeFree
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size50 MB3 MB
Age rating4+4+
DeveloperDirk UysSALEH MUSTAFA

In-app purchases

None

Ding Dong Doorbell

No in-app purchases

1 purchases

Contraction Timer

One-time1
  • Wavely Premium$2.99

Questions

Is Ding Dong Doorbell free?
Ding Dong Doorbell is free to download, with no in-app purchases.
Is Contraction Timer free?
Contraction Timer is free to download, with in-app purchases available.
Do Ding Dong Doorbell or Contraction Timer have ads?
Neither Ding Dong Doorbell nor Contraction Timer shows ads.
Which is updated more often, Ding Dong Doorbell or Contraction Timer?
Ding Dong Doorbell ships an update every 2 months, and Contraction Timer every 3 weeks. Most recently, Ding Dong Doorbell was updated on October 6, 2026 and Contraction Timer on September 27, 2026.

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