Sirius vs TechStack by JSP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sirius
Create personalized AI models and chat with your documents. Get instant answers from PDFs and TXTs, and build AI personas with unique tones and expertise. Experience fast, accurate responses powered by advanced intelligence.
- Chat with PDF and TXT files
- Create custom AI personas
- Personalized AI models
- Advanced AI intelligence
- Fast and accurate responses
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Unlock Your Second Brain with Sirius. Don't just chat with AI—build it. Sirius allows you to create personalized AI models tailored to your specific needs. Chat with Documents: Upload PDF/TXT files and get instant answers based on your files. Custom AI Creation: Build an AI persona with a unique tone and expertise. Advanced Intelligence: Experience lightning-fast, accurate responses powered by next-gen models.
TechStack by JSP
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Connecting End Users to the Professional Technical Community https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: Sirius at none against TechStack by JSP's shown. TechStack by JSP's advantage is update cadence (daily vs fortnightly). On price, in-app purchases, 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
Both are free to download. Sirius sells 2 in-app purchases, starting at $6.99 per 7 days and TechStack by JSP sells 9 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Sirius ships an update fortnightly, TechStack by JSP daily. The most recent releases landed on June 1, 2026 and September 7, 2026 respectively.
| Parameter | Sirius | TechStack by JSP |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Fortnightly | Daily — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.0.0 — better |
| Further details — not scored | ||
| Size | 107 MB | 80 MB |
| Age rating | 17+ | 17+ |
| Developer | FURKAN ZEKIRI | Daryl Marcano |
In-app purchases
Sirius
- Weekly$6.997 Days
- Monthly$19.991 Month
TechStack by JSP
- TechStack (United States)$9.991 Month
- TechStack (United States)$24.993 Months
- TechStack (United States)$44.996 Months
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- TechStack (United States)2 variants$49.993 Months
- TechStack (United States)$74.991 Year
- TechStack (United States)$89.996 Months
- TechStack (United States)$124.993 Months
- TechStack (United States)$239.996 Months
- TechStack (United States)$449.991 Year
Questions
Is Sirius free?
Is TechStack by JSP free?
Do Sirius or TechStack by JSP have ads?
Which is updated more often, Sirius or TechStack by JSP?
Other comparisons
