Comparison

ChatThread vs Second Eye

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

Head to head
About

ChatThread

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ChatThread is a workflow-first AI chat. Choose a workflow to guide the conversation, then ask naturally for more consistent resultsβ€”writing, summaries, translation, and more. Explore the Workflow Store to install community-made flows in a tap. Build and manage workflows on desktop, then run them instantly on mobile. Upload files (PDFs, docs, images, spreadsheets) to extract key points and get structured outputs. Start in seconds: tap β€œStart New Conversation” and pick a flow. Support: chatmagic@163.com

About

Second Eye

Features
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Stop guessing which AI is best - just see for yourself. 2nd Eye runs your question across multiple AI models at the same time and shows you the answers side by side. Compare Claude, Gemini, DeepSeek, and more leading AI models in seconds. WHY 2ND EYE? β€’ Ask once, get answers from multiple AIs instantly β€’ Compare text responses and AI-generated images β€’ Vote on the best answer and build your personal leaderboard β€’ Daily question mode to make AI part of your routine β€’ See response time and cost per model (Pro) FREE PLAN 29 credits/month with 3 top AI models - no credit card needed. PRO PLAN 300 credits/month, choose your own models, unlock runtime and cost display. Expand your credits anytime with the Expand Pack. Whether you're a professional, student, or just curious - 2nd Eye helps you get the best answer, not just an answer. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ChatThread3 screens
Second Eye4 screens

Verdict

The call

The clearest difference is update cadence: Second Eye at fortnightly against ChatThread's every 2 months. ChatThread's advantage is device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. ChatThread sells 6 one-off in-app purchases and Second Eye sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ChatThread ships an update every 2 months, Second Eye fortnightly. The most recent releases landed on October 1, 2026 and October 13, 2026 respectively.

Scorecard2 real differences Β· 4 level
ChatThread versus Second Eye: the parameters behind the verdict, then further details
ParameterChatThreadSecond Eye
PriceFreeFree
Update frequencyEvery 2 monthsFortnightly β€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod, Mac β€” betteriPhone, iPad
Requires iOS15.0 β€” better16.4
Further details β€” not scored
Size41 MB51 MB
Age rating4+9+
Developer鞯 衡PRAGMATIC TECH INNOVATIONS LTD

In-app purchases

6 purchases

ChatThread

One-time6
  • 100 Gold$3.99
  • 500 Gold$17.99
  • 1000 Gold$29.99
Show 3 more
  • 2000 Gold$59.99
  • 5000 Gold$129.99
  • 8000 Gold$199.99
2 purchases

Second Eye

Subscriptions1
  • Pro Monthly$3.991 Month
One-time1
  • Expand Pack$1.99

Questions

Is ChatThread free?
ChatThread is free to download, with in-app purchases available.
Is Second Eye free?
Second Eye is free to download, with in-app purchases available.
Do ChatThread or Second Eye have ads?
Neither ChatThread nor Second Eye shows ads.
Which is updated more often, ChatThread or Second Eye?
ChatThread ships an update every 2 months, and Second Eye fortnightly. Most recently, ChatThread was updated on October 1, 2026 and Second Eye on October 13, 2026.

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