Merlin vs Heuristica vs Perplexity AI vs Harpa
Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.
Your tool
Merlin
vs Merlin
Competitor 1
Heuristica
Heuristica
Competitor 2
Perplexity AI
Perplexity AI
Competitor 3
Harpa
HarpaCompare
4 tools · best value per row highlighted
Competitor
Harpa
Harpa
harpa.ai
HARPA AI is a Chrome Extension and NoCode RPA platform that automates web tasks to save time and money. It uses a hybrid AI engine built on ChatGPT and Machine Learning to perform tasks such as provid
Traffic estimated monthly website traffic
Monthly visits
1.2Mvisits/mo
145.2Kvisits/mo
95.2Mvisits/mo
281.1Kvisits/mo
MoM change
▼ 13.8%
▼ 25.9%
▼ 8.2%
▼ 18.4%
6-month growth
-9.1%
+68.2%
-42.9%
-55.5%
Global rank web
#46,011
#155,990
#446
#170,120
Avg. last 3 months
1.3M
194.5K
104.9M
326.3K
Bounce rate lower is better
50%
34%
33%
53%
Pages / visit
2.5
6.0
3.6
1.6
Visit duration
4m 15s
4m 06s
4m 18s
1m 09s
Traffic sources
● Direct 83% · ● Referral 14%
● Direct 86% · ● Referral 14%
● Direct 94% · ● Referral 4%
● Direct 95% · ● Referral 4%
MerlinHeuristicaPerplexity AIHarpa
Pricing
Model
Freemium
Freemium
Freemium
Freemium
Starting price
$29per month · free tier available
$5per month · free tier available
$20per month · free tier available
€14.3per month
Free tier
–
Free trial
–
–
–
–
API access
–
–
–
–
Plans
Free FreePro $29/moTeams $15/mo
Free FreeProfessional $5/mo
—
Everyone €14.30/moPro €19.60/moLife €238
Capabilities input → output
Input
Web pagesTextDocumentsCode
Web pagesTextDocuments
DocumentsImagesTextCode
Web pagesText
Output
TextImagesCode
Text
CodeText
TextData
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Intermediate
Categories
Tasks what each tool can do · 1 shared · core partial
Tasks covered
13
8
10
10
Summarizing
Video summaries
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Chatbots
–
Chrome extensions
–
–
Document summarization
–
–
Mind maps
–
–
Writing
–
–
AI search
–
–
–
Agents
–
–
–
Concept maps
–
–
–
Flashcards
–
–
–
Research
–
–
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Search engine
–
–
–
Coding
–
–
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Copywriting
–
–
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Email automation
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–
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Image generation
–
–
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Quiz generation
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–
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Research papers
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–
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Social media
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–
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Social media posts
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–
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Study materials
–
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Translations
–
–
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Web scraping
–
–
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Email management
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–
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Homework assistance
–
–
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Literature reviews
–
–
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Productivity
–
–
–
SEO
–
–
–
Web browsing
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 3
▲ 0
▲ 3
▲ 1
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
1
0
Verified listing
–
–
–
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.