Comparison

MemSurf vs ARC

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

Head to head
About

MemSurf

This app transforms your collected notes into personalized lessons and daily exercises to enhance knowledge retention. It adapts to your learning speed and goals, helping you build long-term understanding and recall.

Highlights
  • Bespoke lessons from your notes
  • Short daily exercises
  • Science-based spaced repetition
  • Personalized learning goals
  • Sprint and deadline modes
  • Habit-building streaks
Features
Read full description

Every chapter of your life needs its own way of learning — your hobbies, your career, school, the things you must remember, and the things you simply want to. HOW MEMSURF ADAPTS TO YOU Every quiz and lesson adapts — to the type of content you're studying, how you're actually performing, and the learning goal you've set. Review timing adjusts automatically. No two study sessions look the same, because no two people (or days) are the same. THE LEARNING LADDER Real learning isn't one pass through a deck. MemSurf moves you through four stages — Expose, Differentiate, Recall, Apply. That means: see the new information, tell it apart, recall it cold, then use it in a practical way. PICK YOUR GOAL Different situations need different learning modes and scheduling: - Keep Fresh — gentle upkeep so you never fully forget - Sprint Mode — fast memorization when time is short - Deadline Mode — build toward a specific date, like an exam, a date or a big presentation - Occasional Review — light touches, no pressure SEE YOUR GAPS. WATCH YOUR KNOWLEDGE TREE GROW. MemSurf identifies your knowledge gaps, tracks them over time, and recommends exactly what to review next. As each gap disappears, your knowledge tree grows and you become a better, more knowledgeable version of yourself. LESS FRICTION THAN ANKI. MORE STRUCTURE THAN QUIZLET. No deck design, no card templates, no manual spaced-repetition math. Send in what you want to learn — a PDF, an online article, a voicenote, a screenshot — and MemSurf builds the lesson and the review schedule for you. BUILT TO OUTLAST SCHOOL Students graduate. Curiosity doesn't. MemSurf is for lifelong learners, professionals keeping skills sharp, parents who want to stay close to what their kids are learning — and yes, students too, because every student eventually becomes one of the other three. The habit you build now is the one you'll still have in ten years. Send it in. Show up daily. We take care of the rest. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ARC

Features
Read full description

This app contains the visual puzzles of the ARC-AGI benchmark. Each puzzle follows a simple, hidden rule. Your task is to discover the rule and solve the puzzle. These are not tests of knowledge or memory. They are tests of fluid intelligence: the ability to reason and solve new problems. The ARC-AGI benchmark was created to provide a fair comparison between human and artificial intelligence. By using puzzles that do not rely on prior knowledge, it measures a machine's ability to learn and adapt. To date, no AI has been able to solve all of these puzzles. The app lets you engage with the very same problems researchers use, giving you a hands-on sense of what remains difficult for machines.

Screenshots

MemSurf4 screens
ARC2 screens

Verdict

The call

The clearest difference is in-app purchases: ARC at none against MemSurf's 7. ARC also leads on ads (none vs shown). On price, update cadence, 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. MemSurf sells 7 in-app purchases, starting at $9.99 per month. ARC asks for nothing beyond the download.

UpkeepUpdate frequency

MemSurf ships an update every 8 days, ARC every 10 days. Both last shipped on October 30, 2026.

Scorecard2 real differences · 8 level
MemSurf versus ARC: the parameters behind the verdict, then further details
ParameterMemSurfARC
PriceFreeFree
Rating4.7 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 8 days — betterEvery 10 days
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad — better
Requires iOS2626.0
Further details — not scored
Size237 MB0 MB
Age rating4+4+
DeveloperSehajroop SinghBlackbelt Labs

In-app purchases

7 purchases

MemSurf

Subscriptions2
  • Pro Monthly$9.991 Month
  • Pro Yearly$95.991 Year
One-time5
  • Tiny Boost$0.99
  • AI Credits Small Boost$2.99
  • Purchase Gems$4.99
Show 2 more
  • AI Credits Medium Boost$6.99
  • AI Credits Heavy Boost$12.99
None

ARC

No in-app purchases

Questions

Is MemSurf free?
MemSurf is free to download, with in-app purchases available.
Is ARC free?
ARC is free to download, with no in-app purchases.
Do MemSurf or ARC have ads?
MemSurf shows ads; ARC does not.
Which is updated more often, MemSurf or ARC?
MemSurf ships an update every 8 days, and ARC every 10 days. Most recently, MemSurf was updated on October 30, 2026 and ARC on October 30, 2026.

Other comparisons