Comparison

ChallengeUp vs Iceberg SOS

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

Head to head
About

ChallengeUp

This app helps you build new habits, improve self-care, or break bad ones with a structured, short-term challenge system. Focus on achieving goals within 7 to 60 days to experience lasting change without the pressure of lifelong commitment.

Highlights
  • Short challenge system (7-60 days)
  • Create custom challenges
  • Track progress visually
  • Receive goal reminders
  • Share progress on social media
  • Access useful challenge tips
Features
Read full description

A challenge isn't about "changing your life in a month." It's about "trying 30 days and seeing what happens." ChallengeUp is an app for short challenges: ready-made ones from 7 to 90 days, custom ones for any length. No endless "lifelong" trackers, no promises of a "new you." Just a clear format: pick a challenge, cross the finish line, see the result. WHAT'S INSIDE 10 ready-made challenges, free. From "no sugar" to "sleep before midnight," from "read every day" to "learn a foreign language." Each one comes with a clear description — what to do, why, and what to expect. Build your own in 30 seconds. Name, duration, frequency, reminders — and you're ready. No required fields, no endless setup screens. A finish line that motivates. Every challenge ends. It's not the "forever habit" that wears you out by week three. It's a defined distance with a finish — and the feeling of "I did it." Progress cards for social media. Share your wins with people who matter — close ones, friends, followers. Get support when you need it, and lock in the result by saying it out loud. The cards are drawn so they're a pleasure to share. No ads. Ever. Not in the free version, not anywhere else. ChallengeUp Plus When the free version isn't enough: — Unlimited active challenges (up to 3 in free) — Expanded catalog of exclusive challenges, with more added over time — Duration up to 1000 days — nearly three years of practice, for those who want to go long — Home screen widget — Additional colors and customization — Support for an independent dev team WHY A CHALLENGE Most habit trackers are built on the idea of a "forever" habit — you should brush your teeth or meditate every day for the rest of your life, and a single miss breaks everything. This rarely works, because the brain isn't built for infinite distances. According to Lally et al. (2009), a stable habit forms in about 66 days, not the often-cited 21. A short challenge is a way to cover that distance without burning out: with a visible finish, and the right to stop if it's not for you. ChallengeUp is an independent app. We're not building "another habit tracker." We're building the app we'd want to use for our own challenges: no fluff, no features for the sake of features, no pointless push notifications. Just what works. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://challengeupapp.com/privacy2026

About

Iceberg SOS

Instantly send emergency alerts with your current location to chosen contacts and legal professionals with a single tap. Some advanced features are unlocked with a paid subscription.

Highlights
  • One-tap emergency notifications
  • Up-to-date location sharing
  • Selectable contacts and lawyers
  • Paid subscription for advanced features
Features
Read full description

This apps allows you to make emergency notifications with your up-to-date location for your selected contacts and lawyers by 1 tap. Some features require a paid subscription. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ChallengeUp4 screens
Iceberg SOS4 screens

Verdict

The call

The clearest difference is review sentiment: ChallengeUp at 89% against Iceberg SOS's 0%. ChallengeUp also leads on rating (5.0 vs 3.5) and monetization model (free vs freemium). Iceberg SOS's advantage is update cadence (fortnightly vs every 2 months). On price, ads, in-app purchases 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. ChallengeUp sells 2 in-app purchases, starting at $14.99 per year and Iceberg SOS sells 3 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

ChallengeUp holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: ChallengeUp has 42 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 89% of ChallengeUp's written reviews are positive against 0% of Iceberg SOS's.

UpkeepUpdate frequency

ChallengeUp ships an update every 2 months, Iceberg SOS fortnightly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
ChallengeUp versus Iceberg SOS: the parameters behind the verdict, then further details
ParameterChallengeUpIceberg SOS
PriceFreeFree
Rating5.0 (42 ratings) — better3.5 (2 ratings)
Positive reviews89.2% of reviews — better0.0% of reviews
Number of ratings42 — better2
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFreemium
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better18
Further details — not scored
Size85 MB21 MB
Age rating12+4+
DeveloperLIKE WRONG LLPIlya Kiselev

Customer experience

ChallengeUp

All ratings38 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews65 reviews
Positive89.2%
Neutral4.6%
Negative6.2%

Iceberg SOS

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

2 purchases

ChallengeUp

Subscriptions1
  • Plus (Annual)$14.991 Year
One-time1
  • Plus Lifetime$39.99
3 purchases

Iceberg SOS

Subscriptions3
  • Monthly Subscription$19.991 Month
  • 3 Months$49.993 Months
  • Yearly$149.991 Year

Questions

Is ChallengeUp free?
ChallengeUp is free to download, with in-app purchases available.
Is Iceberg SOS free?
Iceberg SOS is free to download, with in-app purchases available.
Which has better reviews, ChallengeUp or Iceberg SOS?
ChallengeUp is rated higher. ChallengeUp averages 5.0 out of 5 from 42 ratings, while Iceberg SOS averages 3.5 from 2 ratings.
Do ChallengeUp or Iceberg SOS have ads?
Neither ChallengeUp nor Iceberg SOS shows ads.
Which is updated more often, ChallengeUp or Iceberg SOS?
ChallengeUp ships an update every 2 months, and Iceberg SOS fortnightly. Most recently, ChallengeUp was updated on November 3, 2026 and Iceberg SOS on October 31, 2026.

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