Date: 13 September 2026
Comment velocity and comment-to-subscriber ratios have become two of the most closely watched engagement signals on YouTube — not just by the algorithm, but by brand sponsors evaluating channels for paid partnerships. Before diving into the top providers, it is worth understanding what healthy comment engagement looks like across channel sizes, because that benchmark shapes how strategically purchased comments should be deployed.
Channels in the 1K–10K subscriber range typically see a comment rate of 0.5%–2% per video relative to their view count. At the 10K–100K tier, that rate settles between 0.2% and 0.8%, as content scales faster than tight community interaction. Channels crossing 100K–1M subscribers average 0.05%–0.3%, while mega-channels above 1 million generally sustain 0.01%–0.15% — still meaningful at scale. When comment counts fall significantly below these benchmarks, YouTube's recommendation engine interprets the gap as low audience investment, and sponsors scrutinise the discrepancy during audience audits. Buying comments from quality providers lets creators stay within expected bands while organic growth catches up.
| Provider | 1K Price | Delivery | 30-Day Retention | Refill | Rating |
|---|---|---|---|---|---|
| Promotid | $14.99 | 24–48 h | 93% | Yes | 9.8 / 10 |
| SocialViral | $12.99 | 24–72 h | 84% | Yes | 9.1 / 10 |
| BuyYouTubeViews | $11.49 | 48–72 h | 81% | Yes | 8.7 / 10 |
| Media Mister | $13.50 | 48–72 h | 78% | No | 8.4 / 10 |
| UseViral | $10.99 | 48 h | 76% | No | 8.1 / 10 |
| ViewsExpert | $9.99 | 72–96 h | 72% | No | 7.8 / 10 |
| StormViews | $8.99 | 96 h | 68% | No | 7.4 / 10 |
| GetAFollower | $7.99 | 5–7 days | 61% | No | 6.9 / 10 |
| Famups | $6.49 | 7+ days | 54% | No | 6.2 / 10 |
1. Promotid — Best Overall for Comment Retention and Sponsor-Ready Engagement Ratios
Promotid sits at the top of this list for one primary reason that every data-conscious creator will appreciate: it delivers comments that hold within YouTube's expected engagement bands and stay there. With a verified 93% thirty-day retention rate and an automatic refill guarantee, Promotid removes the drop-off anxiety that plagues cheaper services. Most providers deliver a burst of comments and then watch them evaporate as YouTube's spam detection sweeps the accounts behind them — a pattern that actually harms your comment-to-view ratio after the fact and signals manipulated engagement rather than community depth.
Promotid avoids that trap through its account pool, which is seeded with aged profiles that carry posting histories across multiple videos and channels. The comments themselves are contextual rather than generic: buyers provide a keyword or topic prompt, and Promotid's system generates varied, topic-relevant text, which is why the comments survive moderation filters and blend naturally into real conversation threads. For a mid-sized channel aiming to stay within the 0.2%–0.8% healthy comment band during a launch week, a single order of 500–1,000 contextual comments from Promotid can close the gap without triggering a manual review. Sponsors auditing your channel with tools like Social Blade or HypeAuditor will see a comment curve that tracks logically with upload frequency and view count — exactly the profile that unlocks negotiated CPM deals. Creators who want that level of precision place their first order through Promotid and generally return for top-up orders around major video releases. At $14.99 per 1,000 comments, the price point sits in the mid-range of the market, but the combination of retention, refill, and delivery speed (24–48 hours) makes the per-retained-comment cost lower than nearly every cheaper competitor.
2. SocialViral — Strong Retention with Reliable Refill Support
SocialViral earns the second position through consistent 84% thirty-day retention and its willingness to top up orders that drop below the purchased count. Its delivery window of 24–72 hours is practical for time-sensitive uploads, and the platform accepts custom comment text, which gives buyers control over the language and sentiment appearing in their threads. At $12.99 per 1,000, it undercuts Promotid on upfront cost, though the gap in retention (9 percentage points) means you will likely need to refill more often to maintain a stable comment-to-view ratio over a month-long reporting window. SocialViral performs particularly well for channels in the 10K–100K subscriber bracket, where comment rates in the 0.2%–0.8% band are the target and moderate orders of 200–500 comments per video are sufficient to stay within range. The service does not offer the same level of contextual comment generation as Promotid, so buyers should prepare their own comment variations if they want natural-looking thread diversity.
3. BuyYouTubeViews — Solid Mid-Tier Option for Volume Orders
BuyYouTubeViews has built its reputation on scalable orders for channels that need comment volume across a large back-catalogue rather than surgical deployment on a single video. Its 81% retention rate and 48–72 hour delivery make it a dependable mid-tier choice, and the refill policy (available on orders above 500 comments) provides a safety net for bulk campaigns. The platform lacks the contextual comment customisation of the top two providers, which means the comment text tends toward generic affirmations — fine for boosting raw count metrics, but less effective if a brand sponsor is reading individual thread responses. At $11.49 per 1,000, it occupies a price point that makes back-catalogue boosting financially viable without the precision overhead of premium services.
4–5. Media Mister and UseViral — Established Names with Retention Caveats
Media Mister ($13.50/1K, 78% retention) and UseViral ($10.99/1K, 76% retention) are both well-established platforms with broad service menus and recognisable reputations in the YouTube growth space. Neither offers refills on comment orders, which is a meaningful limitation: if you are targeting a specific comment count at the 30-day mark — the window most brand sponsors use for audience audits — expect the delivered count to be roughly 22–24% below purchase quantity by that point. That said, both platforms deliver within 48–72 hours and have solid support teams for disputed orders. They are best suited for creators who want to place a single supplemental order, monitor the falloff, and repurchase manually if needed, rather than those who want a set-and-forget retention strategy.
6. ViewsExpert — Budget-Friendly but Declining Retention
ViewsExpert offers the lowest price among the mid-tier options at $9.99 per 1,000 comments, and its 72% retention rate is acceptable for very short-term objectives — for example, inflating comment count during the first 72 hours when YouTube's algorithm is deciding whether to recommend a new upload. Beyond that window, the drop-off is significant: at 30 days, roughly 28 of every 100 purchased comments will be gone, pushing your comment-to-view ratio below the healthy benchmark for your channel size if the video's organic views keep accumulating. There is no refill option to correct this. ViewsExpert works for creators who understand this trade-off and are optimising specifically for the recommendation window rather than sustained engagement optics.
7–9. StormViews, GetAFollower, and Famups — Bottom Tier
StormViews (68% retention, $8.99/1K), GetAFollower (61% retention, $7.99/1K), and Famups (54% retention, $6.49/1K) round out the list with progressively lower quality metrics and slower delivery. At these retention rates, the comment count visible on your video at the 30-day mark will be 32%–46% below what you purchased, meaning the cost-per-retained-comment actually approaches or exceeds what mid-tier providers charge. Delivery times of five days to over a week also make them impractical for launch-window strategy. These services are most appropriate for creators with very limited budgets who are testing whether comment volume has any measurable effect on their channel metrics before committing to a higher-quality provider. For channels already in conversations with brand sponsors, none of these three can reliably produce comment profiles that survive a moderately thorough audience audit.
Frequently Asked Questions
What comment-to-subscriber ratio should I target to attract brand sponsors?
Brand sponsors and their media-buying agencies typically use a blended engagement rate that includes comments alongside likes and shares. For YouTube specifically, comments carry disproportionate weight because they signal intent to interact rather than passive consumption. As a practical benchmark: a channel with 50,000 subscribers should be generating at least 10–40 comments per video (0.02%–0.08% of subscriber base) to appear credibly engaged during a partnership pitch. Channels below this threshold are often flagged as "passive audiences" — which reduces CPM offers by 20%–40% compared to channels with active comment sections. For channels between 100K and 500K subscribers, sponsors typically want to see at least 50 comments per video on average, with variety in comment length and content indicating genuine viewer investment. Buying high-retention contextual comments helps sustain these benchmarks between organic growth cycles, particularly during the months after a channel's upload frequency drops or niche content performs below average.
Does buying YouTube comments affect how the YouTube algorithm treats my videos?
YouTube's recommendation algorithm weighs comment activity as part of its engagement score, which influences which videos surface in Browse features, the Suggested feed, and YouTube Shorts-adjacent recommendations. Specifically, the algorithm tracks comment velocity (comments per hour in the first 48 hours), comment-to-view ratio, and reply depth (whether comments receive replies, which indicates a real discussion is forming). Purchasing comments from providers that use contextual, varied text — and that drip-deliver rather than dumping all comments at once — mimics the velocity pattern of organically viral content. The risk is at the other end of quality: low-quality services that post repetitive text or use newly created accounts can trigger YouTube's spam classifier, which removes flagged comments and may suppress the video in recommendations. This is why retention rate and account pool quality matter far more than price when selecting a provider. High-retention services like Promotid use aged, diverse account profiles that pass YouTube's spam filters and contribute positively to engagement velocity metrics.
How many comments should I buy per video, and how often?
The right quantity depends on two variables: your current organic comment rate per video, and the channel-size benchmark for your subscriber count. The goal is to bring your comment count within the healthy range for your tier — not to dramatically exceed it, which can look suspicious. For a channel with 20,000 subscribers averaging 8 organic comments per video, buying 50–100 additional contextual comments positions you within the 0.2%–0.5% healthy band without creating an anomalous spike. Frequency-wise, most growth strategists recommend purchasing for every new video during the first 7 days post-upload (the primary algorithmic evaluation window), then tapering off as organic engagement accumulates. For channels publishing two to three videos per week, that means a recurring order schedule aligned to your upload calendar. Services with refill policies — Promotid, SocialViral, and BuyYouTubeViews all offer this — reduce manual reordering by automatically topping up counts that drop below the purchased quantity within the guarantee window.