Comparison

Stop Calling vs Otro

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

Head to head
About

Stop Calling

Identify unknown callers and protect yourself from fraudulent or annoying calls. See descriptions of incoming calls, such as "Financial Services" or "Telemarketing," directly on your screen. The database of suspicious numbers is constantly updated.

Highlights
  • Caller identification
  • Spam call blocking
  • Real-time call descriptions
  • Updated database of suspicious numbers
  • Protection from fraudulent calls
Features
Read full description

Are you getting calls from unknown numbers? Do you wonder whether to pick up because you don't know if they might be fraudulent or harassing? This app will help you with that and protect you from unwanted calls. If one of these numbers calls you, you will see on your phone's display, in addition to the unknown number, a description of it, such as "Financial Services" or "Telemarketing." We continuously update the list of fraudulent and harassing numbers. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Otro

Get a private, real second phone number for calls and texts on your iPhone. Keep your personal number private while using a dedicated line for work, sales, or online accounts. Enjoy unlimited domestic calling and texting with flexible credit options for international use.

Highlights
  • Real second phone number
  • Private calls and texting
  • No new SIM or device needed
  • Unlimited domestic calls/texts
  • International calling credits
  • Secure account with Apple Sign-In
Features
Read full description

Otro is a real second phone number for calls and texts, right on your iPhone. Choose a number in the country you need and start using it in minutes. No new SIM, no second device. Unlimited calls and texting are included in your plan. Calling and texting other countries is billed from your credit balance, and purchased credits never expire. Share your Otro number freely. Your real number stays private, always. Built for anyone who needs a second line: work calls kept separate from personal ones, a temporary number for marketplace sales or short-term rentals, or a private number for online accounts and dating apps. Sign in with Apple to secure your account and recover it on any device. Manage your subscription, top up credits, and check your rates from Settings. Subscriptions auto-renew until canceled and can be managed anytime in your iOS Settings. Otro's calls are audio-only over the internet and do not support emergency calls to 911, 112, or other local emergency numbers. Use your carrier's Phone app for emergencies. https://getotro.app/terms/

Screenshots

Stop Calling4 screens
Otro4 screens

Verdict

The call

The clearest difference is review sentiment: Stop Calling at 38% against Otro's 0%. Stop Calling also leads on update cadence (every 6 days vs every 3 months) and rating (4.7 vs 4.3). On price, ratings volume, ads and in-app purchases 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. Stop Calling sells 2 in-app purchases, starting at $0.99 per month and Otro sells 6 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Stop Calling holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 3 and 6 respectively. Written reviews point the same way: 38% of Stop Calling's written reviews are positive against 0% of Otro's.

UpkeepUpdate frequency

Stop Calling ships an update every 6 days, Otro every 3 months. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 7 level
Stop Calling versus Otro: the parameters behind the verdict, then further details
ParameterStop CallingOtro
PriceFreeFree
Rating4.7 (3 ratings) — better4.3 (6 ratings)
Positive reviews38.0% of reviews — better0.0% of reviews
Number of ratings36 — better
Update frequencyEvery 6 days — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhoneiPhone
Requires iOS17.616.4 — better
Further details — not scored
Size13 MB49 MB
Age rating4+4+
DeveloperMiroslav BaudysCan Tasar

Customer experience

Stop Calling

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews50 reviews
Positive38.0%
Neutral12.0%
Negative50.0%

Otro

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

2 purchases

Stop Calling

Subscriptions1
  • Buy me a coffee every month$0.991 Month
One-time1
  • Buy me a coffee$1.99
6 purchases

Otro

Subscriptions3
  • Weekly$7.997 Days
  • Monthly$14.991 Month
  • Yearly$79.991 Year
One-time3
  • 100 Credits$4.99
  • 300 Credits$12.99
  • 1000 Credits$34.99

Questions

Is Stop Calling free?
Stop Calling is free to download, with in-app purchases available.
Is Otro free?
Otro is free to download, with in-app purchases available.
Which has better reviews, Stop Calling or Otro?
Stop Calling is rated higher. Stop Calling averages 4.7 out of 5 from 3 ratings, while Otro averages 4.3 from 6 ratings.
Do Stop Calling or Otro have ads?
Neither Stop Calling nor Otro shows ads.
Which is updated more often, Stop Calling or Otro?
Stop Calling ships an update every 6 days, and Otro every 3 months. Most recently, Stop Calling was updated on November 1, 2026 and Otro on October 25, 2026.

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