Comparison

International Calling vs CHALLENCY

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

Head to head
About

International Calling

Make affordable international calls to landlines and mobiles worldwide. Avoid roaming fees by calling over Wi-Fi and keep your personal number visible. Easily recharge mobile phones and send international SMS messages.

Highlights
  • Affordable international calls
  • Wi-Fi calling to avoid roaming
  • Caller ID with personal number
  • Transparent per-minute rates
  • Earn free calling credits
  • Easy mobile recharge
  • International SMS texting
Features
Read full description

Call landlines and mobiles in the the United Kingdom, Nigeria, Ghana, Jamaica, Kenya, Ethiopia, France, the United Arab Emirates, Saudi Arabia, Egypt, Oman, Philippines, and 200 more countries and territories. Why Yolla: ∙ VALUE FOR MONEY. Compare our rates and prepare to be amazed. We provide the best rates on more than 30.000 international call destinations. Forget about time – talk more for less. ∙ AVOID ROAMING FEES. Make a call via Wi-Fi and save a fortune on your carrier's roaming fees. Make the most out of your staying abroad! ∙ KEEP YOUR NUMBER. Enjoy Caller ID - a premium feature offered by Yolla for free! Your friends will always receive a call from your personal phone number. They won't know you're calling from the app! ∙ STAY IN CONTROL. We show the price before the call and don't have any hidden charges and connection fees. You pay a straightforward per-minute rate and always know where your money goes. ∙ EARN CREDITS. By inviting friends you can easily earn free credits to call to landlines and mobiles all over the world. Simply send out your personal link and enjoy talking for free! ∙ EASY MOBILE RECHARGE. Top up any mobile number. With Yolla you will have no problem sending airtime to your colleagues, friends, loved ones or anyone. We offer easy & instant mobile recharge with low fees. Forget about calling cards or complex procedures and recharge any number online in just 2 clicks. ∙ INTERNATIONAL SMS TEXTING. Don't have time to call abroad and need to drop a message ASAP? Send text messages to 150 + countries via Yolla. ∙ SEND YOLLA TOP-UPS TO ANYONE. Have friends or family using Yolla? Great! Now you can recharge their accounts. Just purchase and send Yolla credits to your family and friends. They will enjoy free talktime with you or anyone else. ∙ MILLIONS TRUST YOLLA. Be a savvy caller like thousands of Yolla users! Get Yolla today and start talking more for less! Drop the doubt and start enjoying calling abroad! All you need is the Internet connection – WiFi, 4G, LTE, or 3G. Your friends and partners will see no difference - but you will. Any questions or suggestions? Please contact us at hi@yollacalls.com.

About

CHALLENCY

Features
Read full description

About Challency: Challency is a mobile app designed to create a platform for individuals seeking personal growth through challenging experiences. Users can engage in various challenges and share their journey through videos on the app. Key Actors: Main Challengers: Users who initiate challenges by setting goals and sharing their progress. Co-Challengers: Participants who join and complete challenges initiated by Main Challengers. Followers: Users who follow Main and Co-Challengers to stay updated on their challenges and progress. Challenges: Challenges are activities aimed at improving quality of life but are often postponed due to various reasons. Each challenge consists of two edges (bottom and up) and three stages (first, second, and end). Challenge Progress: Main Challengers set daily goals for their challenges and share short videos (daily reports) of their progress on the Storyline. Co-Challengers participate in these challenges and share their experiences as well. Challenger's Motto: The trademark of Challengers is "I don't have a dream, I am challenging."

Screenshots

International Calling4 screens
CHALLENCY4 screens

Verdict

The call

The clearest difference is in-app purchases: CHALLENCY at none against International Calling's 8. CHALLENCY also leads on update cadence (every 9 days vs every 3 weeks). International Calling's advantage is ads (none vs shown). On price, device support and iOS requirement 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. International Calling sells 8 one-off in-app purchases. CHALLENCY asks for nothing beyond the download.

UpkeepUpdate frequency

International Calling ships an update every 3 weeks, CHALLENCY every 9 days. The most recent releases landed on October 21, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 7 level
International Calling versus CHALLENCY: the parameters behind the verdict, then further details
ParameterInternational CallingCHALLENCY
PriceFreeFree
Rating4.7 (9K ratings) — better—
Positive reviews35.6% of reviews—
Number of ratings9K — better—
Update frequencyEvery 3 weeksEvery 9 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size105 MB50 MB
Age rating4+17+
DeveloperYolla Calls InternationalCHALLENCY INC.

Bugs and requests

International Calling

Reported bugs

3 issues
  • Keypad not working during calls
  • Balance disappearing without explanation
  • Simultaneous call limit issues

Requested features

3 requests
  • Improve SMS/text messaging functionality
  • Add option to edit contact photos
  • Provide more transparent pricing information

CHALLENCY

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

International Calling

One-time8
  • $4 Yolla Top-Up$4.99
  • $5 Yolla Top-Up$5.99
  • $8 Yolla Top-Up$8.99
Show 5 more
  • $8 Yolla Top-Up$9.99
  • $10 Yolla Top-Up$12.99
  • $16 Yolla Top-Up$16.99
  • $16 Yolla Top-Up$19.99
  • $20 Yolla Top-Up$24.99
None

CHALLENCY

No in-app purchases

Questions

Is International Calling free?
International Calling is free to download, with in-app purchases available.
Is CHALLENCY free?
CHALLENCY is free to download, with no in-app purchases.
Do International Calling or CHALLENCY have ads?
CHALLENCY shows ads; International Calling does not.
Which is updated more often, International Calling or CHALLENCY?
International Calling ships an update every 3 weeks, and CHALLENCY every 9 days. Most recently, International Calling was updated on October 21, 2026 and CHALLENCY on October 8, 2026.

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