--- title: "Free Growth Tools for SaaS Founders | OneUp Today" description: "Free tools for SaaS founders and indie hackers: multi-platform post preview, cold DM templates, Reddit shadowban checker, subreddit finder, and more." url: https://oneup.today/tools --- Free tools ยท No sign-up needed # Growth tools for SaaS founders Pick the workflow you need and start in seconds. 23 free tools to find leads, write outreach that gets answered, stay un-banned on Reddit, and ship to every platform. 23 free toolsNo login requiredBuilt by OneUp Today ## Find leads 3 tools Surface people already asking for what you sell. [ ![Reddit Lead Finder](https://oneup.today/assets/tools/reddit-lead-finder.webp)New ### Reddit Lead Finder Enter your keywords and target subreddits, get real recent Reddit posts from people asking for a product like yours, ranked by buyer intent. A free taste of OneUp Today's core lead engine. Try it ](https://oneup.today/tools/reddit-lead-finder)[ ![AI Subreddit Recommender](https://oneup.today/assets/tools/subreddit-recommender.webp)New ### AI Subreddit Recommender Describe your product, get the subreddits where your buyers actually gather, validated against Reddit and ranked by size. Then jump straight to finding leads in them. Try it ](https://oneup.today/tools/subreddit-recommender)[ ![Subreddit Finder for Your SaaS](https://oneup.today/assets/tools/find-subreddits.webp)New ### Subreddit Finder for Your SaaS 50 curated subreddits ranked by self-promo tolerance, industry, and ICP. Filter by what you sell, find where your customers hang out. Try it ](https://oneup.today/tools/find-subreddits) ## Write outreach 5 tools Draft replies, DMs, and posts that get answered, not flagged. [ ![AI Reddit Reply Generator](https://oneup.today/assets/tools/reddit-reply-generator.webp)New ### AI Reddit Reply Generator Paste a Reddit post, get two genuinely helpful reply drafts that lead with value and mention your product naturally. The 9:1-rule way OneUp writes replies. Try it ](https://oneup.today/tools/reddit-reply-generator)[ ![AI Cold DM Personalizer](https://oneup.today/assets/tools/cold-dm-personalizer.webp)New ### AI Cold DM Personalizer Paste a prospect's bio or recent post, get three personalized opening DMs for Reddit, X, or LinkedIn that reference their actual context and don't read like spam. Try it ](https://oneup.today/tools/cold-dm-personalizer)[ ![Cold DM Generator](https://oneup.today/assets/tools/dm-generator.webp)New ### Cold DM Generator Enter the prospect's pain and your product, get three personalized cold DM drafts for Reddit, X, or LinkedIn. Value-first, question-first, and peer angles to edit and send. Try it ](https://oneup.today/tools/dm-generator)[ ![AI Reddit Post Writer](https://oneup.today/assets/tools/reddit-post-writer.webp)New ### AI Reddit Post Writer Tell it your subreddit, topic, and goal, get a self-promo-safe post title and body that respects the 9:1 rule and gets upvoted instead of removed. Try it ](https://oneup.today/tools/reddit-post-writer)[ ![Cold DM Template Library](https://oneup.today/assets/tools/cold-dm-templates.webp)New ### Cold DM Template Library 15+ proven cold DM templates for Reddit, X, and LinkedIn. Filter by platform, industry, ICP, and value prop. Copy ready-to-personalize messages with reply-rate estimates. Try it ](https://oneup.today/tools/cold-dm-templates) ## Reddit safety & rules 3 tools Stay un-banned: check account health, rules, and timing. [ ![Reddit Shadowban Checker](https://oneup.today/assets/tools/reddit-shadowban-checker.webp)New ### Reddit Shadowban Checker Enter a username, get a 0-100 account health score, signal breakdown, and a recovery checklist. Detects shadowbans, low-karma flags, single-sub spam patterns. Try it ](https://oneup.today/tools/reddit-shadowban-checker)[ ![Reddit Self-Promotion Rules Checker](https://oneup.today/assets/tools/reddit-self-promotion-checker.webp)New ### Reddit Self-Promotion Rules Checker Can you promote in r/X? Look up any of 49 communities to see its self-promotion policy, plus the 9-to-1 rule and a playbook for promoting on Reddit without getting banned. Try it ](https://oneup.today/tools/reddit-self-promotion-checker)[ ![Best Time to Post on Reddit](https://oneup.today/assets/tools/best-time-to-post-reddit.webp)New ### Best Time to Post on Reddit Recommended Reddit posting windows converted to your timezone and split by goal: maximum reach, B2B subreddits, or comments and discussion. Try it ](https://oneup.today/tools/best-time-to-post-reddit) ## Analytics & research 2 tools Know your numbers and what actually works. [ ![Reddit vs Cold Email ROI Calculator](https://oneup.today/assets/tools/reddit-roi-calculator.webp)New ### Reddit vs Cold Email ROI Calculator Compare cost per customer across Reddit DMs, cold email, and paid ads. Plug in your funnel and see which channel is actually cheapest for your numbers. Try it ](https://oneup.today/tools/reddit-roi-calculator)[ ![Reddit DM Benchmarks 2026](https://oneup.today/assets/tools/reddit-dm-benchmarks.webp)New ### Reddit DM Benchmarks 2026 Original research from 5,756 real Reddit DM conversations: the 26.6% baseline reply rate, what message length and openers win, and why AI relevance scores predict nothing. Try it ](https://oneup.today/reddit-dm-benchmarks) ## Publish & preview 3 tools Ship to every platform and track what you post. [ ![Multi-Platform Post Preview](https://oneup.today/assets/tools/post-preview.webp)New ### Multi-Platform Post Preview Paste your post and image, see live mockups across all 9 platforms. X (with tier toggle), LinkedIn, Reddit, Instagram, Threads, Facebook, TikTok, YouTube, Pinterest. Catches truncation, hashtag styling, image crops, and link cards before you publish. Try it ](https://oneup.today/tools/post-preview)[ ![UTM Campaign Link Builder](https://oneup.today/assets/tools/utm-builder.webp)New ### UTM Campaign Link Builder Build trackable campaign URLs for Google Analytics in seconds. Presets for Reddit, X, LinkedIn, and email, plus a plain-English guide to each parameter. Try it ](https://oneup.today/tools/utm-builder)[ ![Places to Publish Your Startup](https://oneup.today/assets/tools/startup.webp) ### Places to Publish Your Startup Discover directories, forums, and platforms to promote your startup. Try it ](https://oneup.today/tools/startup) ## Media & utilities 7 tools Quick image, video, and everyday helpers. [ ![App Screenshot Generator](https://oneup.today/assets/tools/appstore-screenshot-generator.webp) ### App Screenshot Generator Create professional app screenshots with device frames, text overlays, and backgrounds. Try it ](https://oneup.today/tools/appstore-screenshot-generator)[ ![Social Media Image Resizer](https://oneup.today/assets/tools/social-media-image-resizer.webp) ### Social Media Image Resizer Resize images for Instagram, X, Facebook, LinkedIn, Pinterest, YouTube, and TikTok in one click. Try it ](https://oneup.today/tools/social-media-image-resizer)[ ![Image Compressor](https://oneup.today/assets/tools/image-compressor.webp) ### Image Compressor Compress PNG, JPEG, and WebP images. Reduce file size while keeping quality. Batch with ZIP download. Try it ](https://oneup.today/tools/image-compressor)[ ![Meme Generator](https://oneup.today/assets/tools/meme-generator.webp) ### Meme Generator Create memes with 15 popular templates or your own images. Try it ](https://oneup.today/tools/meme-generator)[ ![Video to GIF Converter](https://oneup.today/assets/tools/video-to-gif.webp) ### Video to GIF Converter Convert MP4, WebM, or MOV videos to animated GIFs. Trim, set FPS, choose resolution. Try it ](https://oneup.today/tools/video-to-gif)[ ![WhatsApp Chat Video Generator](https://oneup.today/assets/tools/whatsappchatgenerator.webp) ### WhatsApp Chat Video Generator Create custom WhatsApp conversation videos. Try it ](https://oneup.today/tools/whatsappchatgenerator)[ ![BMI Calculator](https://oneup.today/assets/tools/bmi.webp) ### BMI Calculator Calculate BMI with metric / imperial conversion and a health-feedback scale. Try it ](https://oneup.today/tools/bmi) ## Want this on autopilot? OneUp finds the leads and drafts the outreach for you, then you just review and send. The free tools are a taste, the product runs the whole loop. [See pricing](https://oneup.today/pricing)