SparkLoop vs Substack (2026): which should you pick?
As of Nov 13, 2026, Substack grades higher than SparkLoop: 3.2 against 2.0 out of 4.0.
Checked Nov 12, 2026 and Nov 13, 2026 · graded Nov 12, 2026 and Nov 13, 2026 by ToolGPA
Substack grades higher on value for money, the free plan, features and ease of use. They get the same grade on platforms.
Price, platforms and features side by side. The table says where each price was read and when.
SparkLoop
Newsletter growth through recommendations and referrals
Substack
Newsletter, podcast and video publishing with paid subscriptions
Which one is for you
Pick SparkLoop if
- Fits if you already send a newsletter and want more subscribers
- Works for publishers happy to run on an existing platform like beehiiv or Kit
Look elsewhere if
- Not for you if you need a tool to send email, as it doesn't
- Pricey if your list is small, since referral programs are a $2,000-a-year add-on
- Watch out: the price of subscribers bought through partner programs isn't on the pricing page
Pick Substack if
- Fits if you want to start writing for free and let readers find you in the network
- Works for writers who plan to charge, as no monthly fee applies
Look elsewhere if
- Watch out: Substack keeps 10% of paid-subscription revenue, on top of card fees
- Skip it if you want drip sequences or segmentation, which the pages read do not describe
- Not for you if you want a custom site or heavy design control
- Watch out: there are no paid plans, so features and limits are the same for every publication
- Skip it if you want a desktop app, as only web and phone apps are listed
How we grade them
| 2.0GPASparkLoopFair | 3.2GPASubstackVery good | |
|---|---|---|
| Value for money | DThe referral program is $2,000 a year, about $167 a month, which is above the $149 where the dearest tenth starts. Free recommendations carry no fee. | AFree to start with no tiers, and no cost until you charge subscribers. Then Substack keeps 10% of paid-subscription revenue, and card fees come out of your share too. |
| Free plan and trial | BPaid recommendations, partner programs and free recommendations are included free. Partner programs charge per subscriber, at a rate not on the page. | AFree outright, with no paid plans or tiers listed and the same features for every publication. |
| Features | DIt does newsletter growth only and doesn't send email, so it is no use without another email platform. | CPaid subscriptions, newsletter, podcast and video, a reader network and subscriber chats. The pages read describe no drip sequences or list segmentation. |
| Ease of use | CNo store rating on record. You connect your email platform and set up programs. | BNo rating on record, but nothing to set up: sign up, write and publish. Apps are listed for iPhone and Android. |
| Platforms and integrations | BWeb with beehiiv, Kit, Mailchimp, Klaviyo, Brevo and HubSpot integrations. | BWeb, iPhone and Android, with no desktop app and no integration list on the pages read. |
| Best for | growing a newsletter through recommendations | writers who want to start a paid newsletter free |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: SparkLoop and Substack. How we grade
Price against what you get
SparkLoop starts at $166.67 a month when paid by the year and scores 2.0 out of 4 on features, ease of use and platforms. Substack has no paid plan and scores 2.7.
Substack scores higher and starts $166.67 a month lower. Of the other email marketing and newsletter tools on the chart, 60 score higher than SparkLoop for less, and none scores higher than Substack for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- SparkLoop also covers reports and partner payouts.
- Substack also covers email campaigns, paid newsletters and community.
At a glance
| SparkLoop | Substack | |
|---|---|---|
| Pricing | Free plan | Free |
| Starts at | $2,000 per year for the Newsletter Referral Programs add-on | Free |
| Free plan | Paid recommendations, partner programs and free recommendations are listed as included free. | Free to start, with no platform fees or tiers; Substack keeps 10% of paid-subscription revenue. |
| Free trial | None listed | None listed |
| Web | ||
| iOS | ||
| Android | ||
| Made by | SparkLoop LLC | Substack Inc. |
| Price read from | sparkloop.app | substack.com |
| Checked | Nov 13, 2026 | Nov 12, 2026 |
Worth knowing
SparkLoop
- It does not send email; you need an existing email platform to send your newsletter.
- The referral program is a $2,000 a year add-on, so it is a sizable cost for small lists.
- The price of subscribers bought through partner programs is not shown on the pricing page.
Substack
- Substack keeps 10% of paid-subscription revenue, and credit card processing fees come out of the writer's share as well.
- There are no paid plans or add-on tiers listed, so features and limits are the same for every publication.
- It is a publishing platform rather than a marketing-automation tool; the pages read do not describe drip sequences or list segmentation workflows.
Key features
SparkLoop
- Paid recommendations
- Earn money by recommending other newsletters to your readers, in emails or through a post-opt-in widget on your site.
- Partner programs
- Get recommended by other newsletters and pay only for subscribers who meet quality criteria you set.
- Free recommendations
- Swap recommendations with similar newsletters at no cost.
- Referral programs
- Reward readers for sharing; rewards are fulfilled automatically and shown in an in-email referral section.
- Email platform integrations
- Two-click, no-code connections to more than 25 email platforms.
- Fraud protection and analytics
- The vendor lists anti-fraud protection and an analytics section among its features.
Substack
- Paid subscriptions
- Writers choose which posts are free and which are for paid subscribers only, and Substack handles the sign-up and payment side.
- Newsletter, podcast and video
- A publication can carry written posts, podcasts and video shows, with live video available for creators who want it.
- Built-in reader network
- Substack publishes a reader app and a discovery network, and says more than half of new subscribers arrive through that network.
- Subscriber chats and community
- The app includes discussions and chats hosted by writers, so subscribers can talk with the writer and each other.
- Own your list
- Substack states that writers own their content and their subscriber list, and that the platform is free to leave.
Plans
SparkLoop
Free$0
Includes paid recommendations, partner programs and free recommendations. Partner programs charge per quality subscriber, with the rate not stated on the page.
Newsletter Referral Programs$2,000
per year, add-on
Referral program with in-email referral section, automatic fulfilment of digital and physical rewards, and a two-click email platform integration.
Substack
Substack$0
Free to start with no tiers or contracts. Writers keep 90% of paid-subscription revenue, minus credit card fees.
Common questions
Which is cheaper, SparkLoop or Substack?
As of Nov 13, 2026, Substack is cheaper to start with: it is free, against $166.67 a month when paid by the year for SparkLoop. SparkLoop starts at $2,000 per year for the Newsletter Referral Programs add-on, and Substack is free.
Which has a free plan, SparkLoop or Substack?
As of Nov 13, 2026, both SparkLoop and Substack have a free plan.
Which platforms do SparkLoop and Substack run on?
As of Nov 13, 2026, only Substack lists iOS and Android apps. Both list a web app. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.