Chronos Agency vs Flowium
Short answer: Chronos Agency is best for larger DTC brands that want many channels or are not on Klaviyo. Flowium is best for brands that want a US-based Klaviyo Master Elite agency. Neither Chronos Agency nor Flowium publishes prices, so you need a quote from each on the same scope.
We run Huge Win Media, a third option on this page, so we are biased. Facts about Chronos Agency and Flowium come only from their own websites and their Clutch profiles.
At a glance
| Compared on | Chronos Agency | Flowium |
|---|---|---|
| What they do | Retention marketing agency for DTC brands across email, SMS, push, WhatsApp, RCS, and direct mail. | Klaviyo agency for ecommerce brands, founded by Andriy Boychuk, known for its Klaviyo education content. |
| Founded | Working with DTC brands since 2017 | 2017, by Andriy Boychuk |
| Based in | Singapore, with an office in Sydney | New York, NY |
| Team | About 80 people serving around 60 brands | Not stated on a page we could verify |
| Klaviyo partner tier | Klaviyo Master Elite Partner | Klaviyo Master Elite (per Flowium's own content) |
| Channels | 11 platforms including Klaviyo, Attentive, Braze, Postscript, Omnisend, and HubSpot | Email and SMS on Klaviyo |
| Pricing | Not published | Not published |
| Minimum | Not published | Not published |
| Guarantee | Not stated | Not stated |
| Track record | 500+ DTC brands since 2017, $400M+ attributable revenue claimed | Not stated on a page we could verify |
| Notable clients | Not listed by name on the homepage | Not verified |
| Clutch | 4.8/5 from 59 reviews, min project $10,000+ | 4.9/5 from 23 reviews, min project $1,000+ |
How they work
Chronos Agency says it has about 80 people serving around 60 brands, and it works across 11 platforms including Klaviyo, Attentive, Braze, and Postscript. That is a large-team model built for brands running several channels or platforms at once.
Flowium is a founder-led agency started by Andriy Boychuk in 2017 and known for its Klaviyo training content. It does not publish its team size or prices on a page we could verify, so you will learn its working model on a call.
Pricing
Chronos Agency: Not published. Flowium: Not published.
Neither Chronos Agency nor Flowium publishes prices, so you need a quote from each on the same scope. Prices change, so confirm on a call before you decide.
Klaviyo partner tier and channels
Chronos Agency lists its Klaviyo status as Master Elite Partner. Flowium lists its Klaviyo status as Master Elite (per Flowium's own content).
Chronos Agency covers 11 platforms including Klaviyo, Attentive, Braze, Postscript, Omnisend, and HubSpot. Flowium covers email and SMS on Klaviyo.
What reviewers say
Chronos Agency has 4.8/5 from 59 reviews, min project $10,000+ on Clutch. Points reviewers raise most often:
- "time zone differences, impacting real-time communication"
- "not optimised for mobile or dark mode"
- "more detailed and transparent reporting"
- "improvement in graphic design and copywriting"
Flowium has 4.9/5 from 23 reviews, min project $1,000+ on Clutch. Points reviewers raise most often:
- "issues with account management transitions"
- "more retroactive updates to existing content"
- "occasional miscommunications regarding meeting times"
Read the full reviews: Chronos Agency on Clutch · Flowium on Clutch
Who should choose which
Choose Chronos Agency if
- You run your retention stack on Attentive, Braze, Postscript, or another platform besides Klaviyo.
- You want push, WhatsApp, RCS, or direct mail managed by the same agency.
- You want the top Klaviyo partner tier (Master Elite) and a large team behind your account.
Choose Flowium if
- You want a US-based agency working in your time zone.
- You want a Klaviyo Master Elite partner.
- You value an agency whose founder publishes a lot of Klaviyo training.
A third option: Huge Win Media
Huge Win Media is about a dozen people working only in Klaviyo. Each client keeps the same marketers, writers, and designers every month. Week 1 is a full audit of every flow, campaign, and segment. Week 2 rebuilds the highest-impact flows. Week 3 starts the campaign calendar. After that it runs on weekly syncs, monthly reporting, and a quarterly A/B testing roadmap.
Huge Win Media is best for established brands with no one in-house on email, ready to put $1,000 to $2,000 a month into it. Pricing: From $1,000/mo. Campaigns $100 to $200 per email by format. Flows quoted after a free audit, from $3,500. Lower rate if your team runs strategy or account management. It works only in Klaviyo, is not a Master Elite partner, and has no Clutch profile yet.
| Compared on | Chronos Agency | Flowium | Huge Win Media |
|---|---|---|---|
| Best for | Larger DTC brands that want many channels or are not on Klaviyo | Brands that want a US-based Klaviyo Master Elite agency | Established brands with no one in-house on email, ready to put $1,000 to $2,000 a month into it |
| Pricing | Not published | Not published | From $1,000/mo. Campaigns $100 to $200 per email by format. Flows quoted after a free audit, from $3,500. Lower rate if your team runs strategy or account management |
| Minimum | Not published | Not published | No minimum term on monthly plans. One-off flow builds have no ongoing commitment |
| Klaviyo tier | Klaviyo Master Elite Partner | Klaviyo Master Elite (per Flowium's own content) | Klaviyo Partner (not Master Elite) |
| Clutch | 4.8/5 from 59 reviews, min project $10,000+ | 4.9/5 from 23 reviews, min project $1,000+ | No Clutch profile yet |
More comparisons
- Huge Win Media vs Chronos Agency
- Huge Win Media vs Flowium
- Chronos Agency alternatives
- Flowium alternatives
Questions
Is Chronos Agency better than Flowium?
Neither is better for everyone. Chronos Agency is best for larger DTC brands that want many channels or are not on Klaviyo. Flowium is best for brands that want a US-based Klaviyo Master Elite agency.
Which is cheaper, Chronos Agency or Flowium?
Neither Chronos Agency nor Flowium publishes prices, so you need a quote from each on the same scope. Chronos Agency: Not published. Flowium: Not published. Checked October 2026.
Is there an alternative to Chronos Agency and Flowium?
Yes. Huge Win Media is best for established brands with no one in-house on email, ready to put $1,000 to $2,000 a month into it, with monthly plans from $1,000 and flow builds from $3,500. It works only in Klaviyo and is not a Master Elite partner.
More agency comparisons and buying guides
Sources and how this page was checked
Facts about other agencies come only from their own websites, checked October 2026. Where an agency does not publish a price or number, we say so instead of guessing. Spot something out of date? Email emma@hugewinmedia.com and we will fix it.
Sources: chronos.agency homepage · Flowium: 15 best Klaviyo agencies (Flowium blog) · Flowium: email marketing agency pricing (Flowium blog) · Huge Win Media pricing · About Huge Win Media · Case studies