Comparison

Idle vs atrophy

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

Head to head
About

Idle

Features
Read full description

Idle is a chat app built around widgets that lets your group chat do more than just talk. Because every group is different, so is every chat on Idle. Your rec softball team can add a calendar widget and a roster tracker. Your small business might need a shared Todo list widget or a place to share links. Your book club can create a poll or write in a shared notepad. And your neighborhood group can make announcements and add events to the board. In Idle, you never get features you didn’t ask for and you’re never missing the ones you need. WIDGES FOR ANY GROUP Every group has unique needs so only add the widgets that you need [Calendar] - Meetups, games, and sessions everyone can see at a glance [Events]- Post events with details and RSVPs so nothing slips through [Signup Sheets] - Keep tabs on attendance, scores, signups, or progress [Notepad]- Shared notes, lists, and agendas the whole group can edit [Paid Memberships] - Collect dues, fees, or contributions right inside the group [Polls] - Vote on the next book, the next date, the next anything [Announcements] - Pin the things that matter so they don't get buried New widgets are added regularly, so there's always more to choose from. CREATE YOUR OWN Need something that’s not off the shelf? Create your own custom one made just for your group. If your group has a need, your chat can meet it. SET THE VIBE Make the space feel like your group with custom wallpapers, your own emojis, and name tags. Idle Chat should feel like being in a friends’ living room, not the JPMorgan office. Terms: https://idlechat.app/terms Privacy: https://idlechat.app/privacy

About

atrophy

This app helps you assess how much you rely on AI for judgment. It offers offline diagnostic quizzes to identify AI-generated content, verify claims, and gauge your confidence. Results are presented as a calibration score and a shareable card.

Highlights
  • Offline diagnostic quizzes
  • AI content identification
  • Claim verification
  • Confidence gauging
  • Calibration score
  • Shareable result card
Features
Read full description

Atrophy is a short diagnostic that measures how much of your judgment you've handed to LLMs. It runs entirely offline. No accounts, no servers, no analytics, no third-party SDKs. Everything stays on your device. WHAT IT DOES - A focused calibration quiz: spot AI slop, verify weak claims, explain back what you read, gauge confidence. - A calibration score with a plain-language reading of where you're solid and where you're drifting. - A shareable result card you can save to Photos. WHAT IT DOESN'T DO - No tracking. No advertising IDs. No ATT prompt — there's nothing to track. - No content rented from a server. The drills ship in the app. - No social graph, no leaderboard, no streaks. ATROPHY PRO (Optional Subscription) Unlocks the Practice Pack — additional drills for ongoing calibration. - Monthly: $4.99 / month - Annual: $49.99 / year Subscriptions auto-renew until canceled. Cancel anytime in your Apple ID settings (Settings → Apple ID → Subscriptions). Account is charged for renewal within 24 hours prior to the end of the current period. Payment is charged to your Apple ID account at confirmation of purchase. Privacy policy: https://atrophy-ai.github.io/privacy.html Terms of use: https://atrophy-ai.github.io/terms.html

Screenshots

Idle4 screens
atrophy4 screens

Verdict

The call

The clearest difference is in-app purchases: Idle at none against atrophy's 2. atrophy's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence, ads 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. atrophy sells 2 in-app purchases, starting at $4.99 per month. Idle asks for nothing beyond the download.

UpkeepUpdate frequency

Idle ships an update every 6 days, atrophy every 5 days. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 7 level
Idle versus atrophy: the parameters behind the verdict, then further details
ParameterIdleatrophy
PriceFreeFree
Rating—3.7 (3 ratings) — better
Number of ratings—3 — better
Update frequencyEvery 6 daysEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad — betteriPhone
Requires iOS26.017.0 — better
Further details — not scored
Size112 MB11 MB
Age rating4+4+
DeveloperSynthetic Solutions, Inc.Graham Annett

In-app purchases

None

Idle

No in-app purchases

2 purchases

atrophy

Subscriptions2
  • Atrophy Monthly$4.991 Month
  • Atrophy Yearly$49.991 Year

Questions

Is Idle free?
Idle is free to download, with no in-app purchases.
Is atrophy free?
atrophy is free to download, with in-app purchases available.
Do Idle or atrophy have ads?
Neither Idle nor atrophy shows ads.
Which is updated more often, Idle or atrophy?
Idle ships an update every 6 days, and atrophy every 5 days. Most recently, Idle was updated on October 13, 2026 and atrophy on October 7, 2026.

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