Comparison

Elmo Calls vs ISS Repeater

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

Head to head
About

Elmo Calls

Engage in interactive video and audio calls with a beloved Sesame Street character. This app encourages imaginative play, teaches healthy habits, and fosters self-confidence through fun conversations and scheduled calls.

Highlights
  • Receive audio and video calls from Elmo
  • Send and receive voicemails from Elmo
  • Live video of user during calls
  • Schedule calls for various situations
  • Learn about healthy habits and letters
  • Engage in imaginative play with Elmo
Read full description

This is an app full of fun phone calls from Elmo, which will help teach your child about healthy habits, self-confidence, and letters. Pick up the phone, Elmo’s calling! Receive video calls, audio calls, and voice mail from Sesame Street’s own furry, red monster. Or, give him a call yourself! With Elmo Calls you can laugh, play, and sing with Elmo! FEATURES • Receive audio and video calls from Elmo, or dial Elmo yourself. • Receive voicemail from Elmo regularly and listen to the messages any time. • See live video of yourself in the corner of the screen while you’re chatting with Elmo. • Grown-ups can activate calls or schedule calls for a variety of situations, such as time to wake up! (more calls for going to the doctor, bath time and learning to potty available with additional call packs) LEARN ABOUT "Elmo Calls" encourages children to engage in imaginative play, practice listening skills and sing songs with Elmo! This app also fosters self-confidence by encouraging children to celebrate important life moments, such as visiting the doctor, going to the potty and learning the alphabet! CALL PACKS Elmo Calls comes with The Sunny Day Sampler Call Pack. This pack includes 13 fun-filled calls for you and your child to enjoy right away! For even more calls, get "Playdate with Elmo" which is ready to download, plus you can buy additional Call Packs easily right within the app: • Firsts and Celebrations: Special calls for special days. Elmo calls you during big events, such as your birthday! • Elmo is Proud of You: You're proud of your achievements and so is Elmo! • Feelings: Everybody has feelings and Elmo can call you to share and talk about those feelings. • ABCs: Saying your ABCs is fun! It’s even more fun with Elmo! • Special Visits: Elmo wants to talk about your special plans for today. • Holidays: Holidays are fun to celebrate and Elmo wants to celebrate with you! • You Can Do It!: No matter what you're learning, whether its your ABCs or using the potty, Elmo wants to cheer you on. • Sing with Elmo!: Elmo sings for you! You can sing along or just listen. • Happy Habits: Healthy habits are more fun when you do them with Elmo. • Laugh with Elmo: Elmo just wants to say hi! • Playdate with Elmo: Play and pretend with Elmo! Ready to download! TIPS • Please allow Notifications to receive scheduled calls from Elmo! ABOUT US Sesame Workshop’s mission is to use the educational power of media to help kids everywhere grow smarter, stronger, and kinder. Delivered through a variety of platforms, including television programs, digital experiences, books and community engagement, its research-based programs are tailored to the needs of the communities and countries they serve. Learn more at www.sesameworkshop.org. ABOUT IDEO IDEO is a human-centered design and innovation firm ranked independently among the ten most innovative companies in the world. Learn how our team of child-development experts, veteran toy designers and interaction designers approach the creation of award-winning kid apps at www.ideotoylab.com. PRIVACY POLICY The Privacy Policy can be found here: https://www.sesameworkshop.org/privacy-policy/ CONTACT US Your input is very important to us. If you have any questions, comments or need help, please contact us at: sesameworkshopapps@sesame.org.

About

ISS Repeater

Features
Read full description

Most satellite trackers tell you when the ISS passes over you. This app tells you when you and a second station are within radio range for communicating. The ISS carries a cross-band FM repeater. To make a contact through it, the station has to be above your horizon and above the other operator's at the same moment. ISS Repeater finds those windows for any two stations, up to seven days ahead. TWO STATIONS, OR ONE In DUAL mode, enter both stations and get back only the windows you can actually share. In SINGLE mode it works as a straightforward pass planner for listening to the repeater yourself. Coordinates go in three ways: typed, dropped as a pin on a map, or taken from your phone's own GPS fix. A DOPPLER SCHEDULE, NOT JUST A PASS TIME The downlink drifts about 20 kHz from one end of a pass to the other. Each result card lays out five receive channels across 437.790-437.810 MHz and tells you when to move to each one and when to leave it - separately for each station, so both operators can work from the same plan. FIND IT IN THE SKY Tap LIVE VIEW and hold the phone up. The camera shows the horizon, the compass points, the whole arc of that pass, and a marker on where the ISS is right now. When it is out of frame, an arrow points the way to turn. Azimuth, elevation and range are read out along the bottom. Bearings are TRUE, not magnetic. The app carries the World Magnetic Model and corrects for declination at your own coordinates, so what you see lines up with a rotator readout or a map. SAVE A PASS, GET A REMINDER Tap SAVE on any window to keep it. Saved passes keep their numbers current against freshly fetched orbital elements, and an optional notification arrives ten minutes before each one opens. NIGHT MODE Black background, red text, for use at the radio without wrecking your dark adaptation. PRACTICAL NOTES - Orbital elements come from CelesTrak, with AMSAT as a fallback, and are cached on the phone. Once they are there, searching, Doppler planning and the sky finder all work with no connection at all. You can paste your own element set instead if you prefer. - The app predicts geometry, not equipment. The repeater is powered down for some crew operations, EVAs and school contacts. A window means the station is mutually visible, not that it is transmitting. - Uplink and operating practice are yours to get right, according to your licence class and national regulations. PRIVACY No accounts, no analytics, no advertising, and nothing about you is collected or transmitted anywhere. The only requests the app makes are for orbital elements, and for Apple's map tiles if you use the map picker.

Screenshots

Elmo Calls4 screens
ISS Repeater4 screens

Verdict

The call

The clearest difference is price: ISS Repeater at Free against Elmo Calls's $1.99. ISS Repeater also leads on in-app purchases (none vs 11) and update cadence (monthly vs every 7 months). Elmo Calls's advantage is chart position (#10 vs unranked) and device support (3 vs 1). On ads 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

ISS Repeater is free to download; Elmo Calls costs $1.99 up front. Elmo Calls sells 11 one-off in-app purchases. ISS Repeater asks for nothing beyond the download.

UpkeepUpdate frequency

Elmo Calls ships an update every 7 months, ISS Repeater monthly. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard6 real differences · 5 level
Elmo Calls versus ISS Repeater: the parameters behind the verdict, then further details
ParameterElmo CallsISS Repeater
Price$1.99Free — better
Rating4.3 (956 ratings) — better—
Positive reviews73.5% of reviews—
Number of ratings956 — better—
Update frequencyEvery 7 monthsMonthly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#10 — better—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.6
Further details — not scored
Size171 MB5 MB
Age rating4+4+
DeveloperSesame Workshop (Apps)KEEGAN JAMES MCCARTHY

Bugs and requests

Elmo Calls

Reported bugs

4 issues
  • App crashes on launch
  • Video calls don't work
  • Purchased content not restoring
  • Scheduled calls not triggering

Requested features

4 requests
  • More character call options (Big Bird, Cookie Monster, etc.)
  • Ability to record video calls
  • Improved UI for young users
  • Scheduled calls that actually ring the device

ISS Repeater

Not enough reviews yet to summarise bugs or requests.

In-app purchases

11 purchases

Elmo Calls

One-time11
  • "Playdate With Elmo" PackFree
  • "Feelings" Pack$0.99
  • "ABCs" pack$0.99
Show 8 more
  • "Special Visits" Pack$0.99
  • "Firsts and Celebrations" Pack$0.99
  • "Elmo is Proud of You!" Pack$0.99
  • "Laugh With Elmo!" Pack$0.99
  • "Happy Habits" Pack$0.99
  • "You Can Do It!" Pack$0.99
  • "Sing With Elmo!" Pack$0.99
  • "All Calls" Pack$6.99
None

ISS Repeater

No in-app purchases

Questions

Is Elmo Calls free?
Elmo Calls costs $1.99, and also offers in-app purchases.
Is ISS Repeater free?
ISS Repeater is free to download, with no in-app purchases.
Do Elmo Calls or ISS Repeater have ads?
Neither Elmo Calls nor ISS Repeater shows ads.
Which is updated more often, Elmo Calls or ISS Repeater?
Elmo Calls ships an update every 7 months, and ISS Repeater monthly. Most recently, Elmo Calls was updated on October 30, 2026 and ISS Repeater on October 25, 2026.

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