A guide for early-stage founders on what the tool reviews and which edits deck-reading data supports.
TL;DR
- Investors read decks quickly, and founders are too close to their own deck to see what a first-time reader will understand, question or find missing, so a deck needs outside feedback before its first send.
- The largest drop in investor attention falls between slide one and slide two, which makes the first three slides the highest-priority edit.
- Founders should use the output as a revision checklist and confirm the changes with human readers and with research on investor fit.
- The Pitch Deck Evaluator is an AI tool in Grove Ventures’ Founder OS that returns instant insights, an investor takeaway for each slide and action items for early-stage founders.
The Grove Deck Evaluator, one of the AI tools in Grove Ventures’ Founder OS, is built to give early-stage founders instant feedback on a pitch deck from an investor’s perspective. A founder submits the deck and receives insights on what is working, what is missing and what to improve, plus a slide-by-slide investor perspective and action items. The tool reviews the deck alone, so it shows how the deck reads and does not judge the company or its traction. Grove Ventures invests in early-stage companies and built the tool, so founders should treat its feedback as one informed perspective among several.
Why a deck needs feedback before the first send
For an early-stage investor, the deck is the clearest snapshot of the problem, the insight, the approach and the ambition. It is often the first chance, and sometimes the only chance, to explain why this team is the one building the product. The deck has a few minutes at most to make that case, and the founder who wrote it is the person least able to judge how it reads.
Founders work inside their business every day. Terms, customer context and technical background that feel obvious to them are new to a reader opening the deck cold. As a result, founders tend to miss three things: what an investor will understand immediately, what will raise a question, and what is missing altogether. These are hard to see from the inside, which is why feedback from an outside reader is worth getting before the first send.
Papermark’s 2026 fundraising report, which draws on 24,541 pitch decks shared through tracked links on its platform, shows how little time that first impression gets. The average view lasts 4.0 minutes, but 16 percent of views end within 10 seconds. The largest drop in attention falls between slide one and slide two, and fewer than half of readers who open a deck reach the last slide. The data does not show why readers stop. It does show that what a reader understands in the first few slides carries the most weight, and that is the part a founder finds hardest to judge alone. The data comes from founders who use one vendor’s platform, so it describes that group and not every fundraise. A review from an investor’s perspective, such as the slide-by-slide takeaways in the Grove Deck Evaluator, shows where the story is clear and where it raises questions, before an investor reads the deck.
What the Grove Deck Evaluator reviews
The feedback covers several areas, described in Grove’s launch post. The tool shows what investors expect to see in a deck and what is currently missing, and it shows what could be improved and how to improve it, through action items derived from the deck. It gives an investor takeaway for each slide, so a founder can see how every slide reads. It also checks whether the deck communicates the problem, the solution, the unique technology and the team, and whether the market, product and differentiation are clear. Based on this feedback, it explains how to prepare for investor meetings.
Grove’s launch post, Introducing the Grove Deck Evaluator, covers the feedback categories and the privacy notice in full.
What deck data suggests founders should check
- Check the opening. Decks that open with traction in the first three slides drew 20 percent more views in the Papermark data. Early-stage founders without meaningful traction can still open with their strongest point, whether that is the technology, a unique insight, the problem they are solving or the team’s expertise. Traction is just one way to create a strong opening. The cover holds about 45 percent more time than the median page, because it is where an investor decides whether to continue.
- Check length. 46 percent of decks run 9 to 16 pages. Views and completion are different measures: views count how often a deck is opened, and completion is the share of readers who reach the final slide. 12-page decks, which fall within the 9 to 16 range, collected the most views of any exact length, and about half of their readers reached the final slide. Completion falls as decks get longer. About 60 percent of readers reached the end of 8-page decks, compared with about 40 percent for 16-page decks, even though 16-page decks drew about as many views as 12-page decks.
- Check content. Only about 40 percent of decks included a financials slide, even though investors spent more time on it than on the median slide. The team slide, by contrast, appeared in 71 percent of decks and received the most attention of any slide, at 5.7 seconds per view. Slides that investors read closely are not always the ones founders include.
- Check the market. Two thirds of tracked deck views come from outside the United States. Many of these readers may not know the company’s home market, so one line on the problem slide that names the market the company serves can help them.
How to use the evaluator’s output
| Evaluator output | What it covers | Why it matters before sending |
| Expectations and gaps | What investors expect to see and what is missing | Identifies content to add before the first send |
| Slide-by-slide takeaway | The investor perspective on each slide | Shows how each slide reads, which matters because attention drops after slide one |
| Action items | Specific edits derived from the deck that show what to improve and how | Turns feedback into a revision list |
| Clarity check | Whether problem, solution, unique technology, team, market, product and differentiation come through | Covers the core elements of an early-stage deck |
| Meeting preparation | How to prepare for investor meetings based on the feedback | Connects deck changes to the questions a founder will face |
After the revision: sending and following up
Papermark’s data comes from founders who share decks through tracked links, so its findings on sharing and follow-up apply to founders who do the same. A tracked link, unlike a PDF attachment, shows when a deck is opened, how long readers stay and whether they return. One link per firm keeps each view attributable to that firm, yet 79 percent of founders in the data send the same link to everyone, which makes individual views hard to interpret. Among these tracked decks, the median first open came after 7.9 hours and 24 percent were still unopened after three days, so a founder who tracks views can treat silence before day three as a weak sign about interest. In the same data, a second open or a download was a stronger signal for a follow-up than a quiet week. A founder who sends a PDF or does not track views cannot see these signals and will need other ways to judge timing.
The same data separates two problems for founders who track views. Few views point to the investor list, which calls for more investors or warmer introductions. Short views and shallow reads point to the deck, which is where the evaluator’s action items apply. Papermark’s advice is to check the list before the deck, since fixing the deck when the list is the issue wastes time in a raise.
Practical takeaways
First, submit the current draft and sort the action items by slide position, starting with the first three slides.
Second, treat 9 to 16 pages as a useful guideline. The right length depends on the company and on what needs explaining, so keep what helps an investor understand the case and cut what does not.
Third, check that the deck covers financials in a way that fits the company’s stage. Investors spent more time on the financials slide than on the median slide in the Papermark data, but an early-stage company may not have meaningful financial results yet. In that case a simpler slide can still help, such as the size of the round, how the funds will be used and the milestones they are meant to reach. Also confirm that the deck includes a team slide, since it received the most attention.
Fourth, ask a founder who has raised, or an investor in your network, to read the revised deck. Their judgment and knowledge of fundraising add to the evaluator’s feedback, and the two work well together.
Finally, research each fund before sending the deck to it.
Preparing to raise? Try the Grove Deck Evaluator or browse the other tools in Founder OS.
FAQs
Q: What does the Grove Deck Evaluator give founders?
A: It gives instant insights into what is working, what is missing and what can be improved in a pitch deck, plus an investor takeaway for each slide and action items derived from the deck. It also covers how to prepare for investor meetings based on the feedback received. Grove built the tool to give early-stage founders high-quality feedback loops, particularly at stages when small changes in framing and clarity can change outcomes.
Q: Does the Grove Deck Evaluator judge whether Grove Ventures would invest in a company?
A: No. The tool reviews the deck alone, not the founder’s background, network or traction, and its feedback is not a prediction of fundraising outcomes. Deck feedback and an investment decision are separate things. Grove Ventures is an early-stage firm in Tel Aviv that manages more than $500 million and invests in Israeli founders from pre-seed and seed through Series A across Enterprise AI, Semiconductors, AI infrastructure and compute, Vertical AI, Physical AI, Healthtech and Energy. Its investment decisions look at strong founding teams, defensible technology and long-term potential, which a deck can only partly show.
Q: Is a deck stored after the Grove Deck Evaluator reviews it?
A: The deck is processed temporarily for evaluation only and never stored, with analysis that is automated and private. No human reads the deck and that tool retains no company names, content or identifying information. Founders with specific confidentiality requirements can read the Privacy Policy and the Terms of Use before submitting a deck.
Q: How long should a deck be after revisions?
A: There is no single right length, because it depends on the company and on what needs explaining. In the Papermark data, 46 percent of decks run 9 to 16 pages, which makes that range a useful reference point. 12-page decks collected the most views of any exact length, but views and completion are different measures: about 60 percent of readers reached the end of 8-page decks, compared with about 40 percent for 16-page decks. A deck works best when it is as concise as it can be while still making the case clearly. The evaluator’s investor takeaway for each slide shows how each slide reads, which helps a founder decide what to keep, tighten or cut.
Q: How can founders use the evaluator with the Investor Check when approaching Grove Ventures and other early-stage Israeli funds?
A: Start with the deck, then research the funds. After revising the deck with the evaluator’s action items, a founder can run The Investor Check, part of Founder OS, for any fund on a shortlist, including Grove Ventures. The tool asks for the fund and partner, then for the founder’s market, round size and priorities, and builds a brief from public sources that covers the fund’s stage focus, latest fund and portfolio attribution, among other things. A founder can use that information to tailor the deck to the specific investor, for example by moving the part of the story that fits the fund’s stage focus or the partner’s past investments into the opening slides. Public data on a partner’s portfolio is often partial, so founders should confirm attribution directly before relying on it.
Q: Which other Founder OS tools help during a fundraise?
A: Founder OS lists the Pitch Deck Evaluator alongside four other resources, and the tools are free and open to founders whether or not Grove invests. The Investor Check builds a due diligence brief on an investor, and the Cap Table Simulator shows how dilution, SAFEs and ESOP top-ups affect each stakeholder. The People First Coach is an AI coach based on Grove’s People First Playbook. It gives founders practical guidance on early people decisions, such as defining a role, structuring a hiring process, running a reference check and planning onboarding. US Health Market Decoded is a practical glossary written for Israeli founders.