Nirvana for GTD vs SA_agent
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nirvana for GTD
This app helps you capture, organize, and focus on your to-dos using the Getting Things Done methodology. It offers a flexible system to manage tasks without pressure, ensuring nothing gets missed across all your devices.
- Capture to-dos instantly
- Organize with Projects, Areas, and Tags
- Focus on what matters now
- Smart views (Next, Scheduled, Someday)
- Cross-device synchronization
- Flexible and pressure-free system
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Inspired by Getting Things Done®, Nirvana is your trusted space to capture all your to-dos, organize with intention, and focus on what matters right now. Ever feel like you're juggling too much? Nirvana offers a gentle, flexible way to get things done—no pressure, no clutter, no guilt. Here's how it works • Capture to-dos as they pop up • Clarify what needs doing and what can wait • Organize using Projects, Areas, and Tags • Review regularly to stay on track • Engage with what's most important right now Smart views that help you focus • Next — things you can do anytime • Scheduled — to do in the future • Someday — ideas on the back burner Everything stays in sync across your devices, so you can check in whenever, wherever. - - - - - - - - - - - - - - - - - - - - "Your mind is for having ideas, not holding them." — David Allen Whether you're balancing work, creative projects, family life, or all of the above, Nirvana frees your mind with the confidence that everything is captured and nothing gets missed. "It's by far the best GTD app I have used (and I've tried them all!)." — Damian Surr - - - - - - - - - - - - - - - - - - - - Questions, suggestions, or want to learn more? Visit https://www.nirvanahq.com or email us at support@nirvanahq.com - - - - - - - - - - - - - - - - - - - - GTD® and Getting Things Done® are registered trademarks of the David Allen Company. Nirvana is not affiliated with or endorsed by the David Allen Company. - - - - - - - - - - - - - - - - - - - - Apple's Standard EULA is here: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
SA_agent
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SA_agent is a Safari Web Extension for researchers who use Google Scholar on iPhone and iPad. It adds local journal context to supported result pages. A 7-day free trial, then $4.99 per year, unlocks the extension. Summaries use Apple Intelligence on your device. RESEARCH WITH LOCAL JOURNAL CONTEXT • See color-coded SJR quartiles and available JCR, CAS, CiteScore, indexing, and discipline-list fields beside supported Scholar results. • Match journals on device with an ISSN hit, a result cache, a Bloom filter, a sorted prefix index, a token index, and a trigram index that checks plausible titles with a banded edit-distance test. • Search more than 35,000 bundled journals by title or ISSN without contacting a journal-ranking service. • Choose, reorder, and hide ranking badges to match your workflow. • Import a private custom journal list from CSV or JSON and display its ranks alongside bundled data. Custom datasets stay in extension-local storage. OPTIONAL AI RESEARCH TOOLS • Create focused paper summaries from Scholar results. • Choose a 30–1,000-word target and Academic, Formal, or Casual tone. • Regenerate or improve a summary, then copy it or download it as text. • Connect an optional Zotero Web API account, format up to 50 library items in APA, Chicago, MLA, or Harvard style, and generate a downloadable literature-review draft. • Summaries and literature reviews are created with Apple Intelligence on your device. SUBSCRIPTION Start a 7-day free trial in the SA_agent app, then subscribe for $4.99 per year. Apple confirms the price before the trial begins. Cancel during the trial and you will not be charged. An active trial or subscription unlocks Scholar rankings, Journal Search, custom datasets, summaries, and Zotero literature reviews. You do not paste an extension token. Earlier credit packs do not unlock the subscription. PRIVACY BY ACTION Journal matching, ranking lookup, and custom datasets are processed locally. Summaries and literature reviews use Apple Intelligence on your device and are not sent to an SA Agent server. Optional Zotero credentials are used for Zotero API requests. SA_agent does not sell personal information, collect general browsing history, or run advertising analytics. See the Privacy Policy for complete details. GET STARTED 1. Open SA_agent and start the 7-day free trial. After the trial, the subscription is $4.99 per year. 2. Enable the SA_agent extension in Safari and allow access to supported Google Scholar pages. 3. Open the extension Options page to choose badges, search journals, add a custom dataset, or connect Zotero. Availability of optional ranking fields depends on the licensed data included in the installed release. SA_agent is intended for academic research workflows. Google Scholar and Zotero are trademarks of their respective owners. SA_agent is not affiliated with or endorsed by Google Scholar or Zotero. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://swiphtgroup.com/sa-agent/privacy/
Screenshots
Verdict
Nirvana for GTD and SA_agent are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Nirvana for GTD sells 5 in-app purchases, starting at $4.99 per month and SA_agent sells 4 in-app purchases, starting at $4.99 per year. Whichever you choose, the download price is not the number that matters.
Nirvana for GTD ships an update every 2 weeks, SA_agent every 3 weeks. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.
| Parameter | Nirvana for GTD | SA_agent |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (285 ratings) — better | — |
| Positive reviews | 75.4% of reviews | — |
| Number of ratings | 285 — better | — |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Mac, Vision Pro — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 41 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Nirvanahq | 鹏帆 常 |
Bugs and requests
Nirvana for GTD
Reported bugs
4 issues- Recurring tasks duplicating
- Spam tasks appearing
- App freezing or going blank
- Sync issues causing data loss
Requested features
8 requests- iOS widgets
- Calendar integration
- Siri/IFTTT integration
- Location-based reminders
- Attachment support
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- Improved multi-task editing
- More frequent updates
- Collaborative features
SA_agent
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Nirvana for GTD
- Nirvana Pro$4.991 Month
- Nirvana Pro$35.991 Year
- Nirvana Pro7 Days trial$36.001 Year
- One Year Subscription$29.99
- Lifetime Subscription$49.99
SA_agent
- SA_agent Annual7 Days trial$4.991 Year
- SA Agent Credits$0.99
- SA Agent Credits$4.99
- SA Agent Credits$19.99









