How flespi pricing works

A detailed explanation of what we charge for, when, and on what conditions.


The up-to-date complete flespi pricing is always available on our pricing page.

All plan-specific limitations on the use of the flespi platform are listed in our restrictions document.


This section focuses on the items that raise most questions and concerns among our clients.


Since flespi is a device-centric platform, you will deal with devices a lot and need to understand the pricing well.

(€ 0)
(€ 130)
(€ 400)
(€ 900)
(€ 3000)
Pre-paid devices101,0001,0001,0001,000
Cost of extra 100 devices
(while < max. devices limit)
€ 2
Max. devices105,00050,000200,0002,000,000


Important! Each plan has extendable and non-extendable items. You can increase the limit of extendable items on the same plan by adding extra items. However, if you reach the limit for non-extendable items, you will need to upgrade to the higher plan.

(€ 0)
(€ 130)
(€ 400)
(€ 900)
(€ 3000)
Default — all you get for a fixed fee (you can’t have less)
Extendable items
devices101 000
devices assigned to calculators501 000
storage (see clarification below)see limits by element type∞ (1 GB included)
Non-extendable items
calculators51 00010 000100 0001 000 000
subaccounts31 00010 000100 0001 000 000
limits (for subaccounts)11001 00010 000100 000
tokens10010 00030 000100 0001 000 000
webhooks2201001 00010 000
groups11001 00010 000100 000
realms2103010010 000
realms users510 00030 000100 0001 000 000
modems2103010010 000
containers2010 000100 0001 000 00010 000 000
CDNs51 00010 000100 0001 000 000
SLABest EffortPriorityPriorityAdvancedPremium
Extras — add more items as your project grows (drop them if scaling down).
Available for extendable items on Commercial plans only.
extra channel (see clarification below)€ 40
extra stream€ 20
extra 100 devices€ 2
extra plugin€ 20
extra 100 devices assigned to calculators€ 2
extra 1 GB storage€ 1
extra 10 SMS€ 2
1 hour of custom engineering€ 150

Important details

  • you cannot extend any of the limits in the Free plan. E.g., you can have up to two channels, but you can’t go any further. To start scaling up, you need to switch to the Start commercial plan first.
  • switching to the Enterprise commercial plan is only possible for a period of 6 months or longer.
  • you will be charged for all elements of each type present in your account even if they are disabled. So, if you have six channels, three of which are disabled, you will still be charged for all six.
  • even though the flespi panel shows the total storage volume for each element type, the storage is not redistributed between the elements. E.g., when you create two streams, you get 100 MB of storage for each one. Even if the first stream uses only 20 MB, the second one still has 100 MB, not 180 MB.
  • storage in the Free plan is limited based on the restrictions for each element type (see the table below).
  • storage is not limited in Commercial plans.

Platform restrictions

flespi platform imposes some storage and traffic restrictions that are generous and reasonable enough for you not to be too concerned about them. If you start hitting some limits, it's time to consider switching to a more advanced plan.

Per each plan and we limit maximum available traffic, storage, frequency (e.g. messages per minute) for various flespi entities like devices, channels, streams, tokens, plugins, etc. Detailed information about available quotas per each plan you can find in restrictions PDF.


SLA Best EffortSLA PrioritySLA AdvancedSLA Premium
Uptime responsibilityno refundno refund99.89-99.01%: 30% 99.0% or below: 70%99.89% or below: 70%
Protocols availableany publicly available protocol can be usedprivate (locked for specific account only) and any publicly available protocol can be used
Custom engineeringbug fixes and enhancements of supported protocolsincludes up to 8 hours per month of custom protocols engineering

Storage use

We have a few types of storage in the flespi platform — channels, streams, devices, containers, CDNs, MQTT sessions that have dedicated space to store the data.

Which types of storage do we limit?

The data stored on the flespi platform includes messages queued in the channel, device, and stream buffers, data in containers, files in CDNs, persistent MQTT sessions, and MQTT retained messages. The platform restrictions table above specifies the limits for each element type. Exceeding the limit immediately triggers the corresponding action (the right column in the table). All limits are strict and governed by the platform architecture.

We do not limit the amount of data transferred through the channel or stream!

How do we calculate your storage use?

  • We snapshot the storage used throughout the flespi platform (channels + streams + devices + containers + CDNs + MQTT sessions) every minute and calculate the daily average.
  • Based on the daily average we calculate their monthly average.
  • Round the resulting number up to the nearest gigabyte.
  • Charge you.

Example: Say, you use a Commercial plan and had one channel and one device in the system throughout the given month. The daily storage use is illustrated in the table and diagram below.

flespi storage use calculation

The average monthly use amounted to 4 000 MB.
4 000 MB — 1 000 MB included in the Commercial plan = 3 000 MB => you owe us € 3!

How to make sure I do not use too much storage?

If you notice that the messages pile up in the buffer quicker than you expected but you still want to keep your storage use within certain limits, you can go one of the two ways (or both):

  1. reduce TTL in the element settings — this will lead to messages living less in the buffer thus not accumulating that fast.
  2. read messages from the element buffer more frequently — once you read the messages from the buffer into your application, you can clear the buffer.

Use of extra elements

If your infrastructure requires more elements in the flespi platform than the Commercial plans provide by default, you are welcome to go beyond the limitations by as much as you need. At an extra cost. How will we charge you? You can find the monthly prices for extra elements in the table above or on the pricing page.

What if I use the element for less than a month?

The logic is similar to storage calculation. We will collect the daily average for each element type and average it for the given month rounding up to the closest integer where necessary.

Example: You created the fourth channel on November 1 and used it for 15 days. Then created the fifth channel on November 1 and used it for the entire month (30 days). Therefore, in November you had (5*15 + 4*15) / 30 = 4.5 = 5 channels on average.
You will pay €40 * (5 total channels — 3 default channels) = €80.

Terms of hardware integration

You can request the integration of a new device model or an entirely new protocol. This process may vary in terms of required time and effort from our engineers, so it is usually estimated on a case-by-case basis. Here's a detailed explanation of possible scenarios.

Billing terms and conditions

Refundable deposit

When you submit a request to upgrade to the commercial account, we verify the provided company details and issue a payment link for a refundable deposit. The deposit is paid back to you when you decide to terminate commercial flespi usage. Once you pay the deposit, your account will upgrade to the Commerical plan automatically.

Monthly payments

Once you start using the flespi Commercial account you should be aware of the order of payments and the consequences of non-payment. Below is the detailed timeline of how you are billed for the flespi services:

  • You get the invoice from us for the reporting month (e.g. November) no later than five days after the end of the reporting month (December 5). 
  • You have to pay until the middle of the current month (December 15). 
  • You’ll get an additional reminder five days before the deadline (December 20). 
  • In case of non-payment of a November invoice, your account will be downgraded to the free version with a consequent reduction of all limits — channels, devices, storage, etc. exceeding the free limits will be unavailable (read more about the consequences in a dedicated article).
  • Once you pay the invoice, your limits and data will be restored immediately.
  • Your first invoice for the actual use of the flespi services will be issued on the first day of the month following the month in which you upgraded and will be prorated based on the number of days from the day of upgrade till the end of that month (e.g. if you upgraded on September 15, you will pay for half of a month).

See more details in the Public offer contract (Section 2. Consideration to the Company).


Should you for any reason decide to downgrade from a Commercial to a Free account, please learn how to do this properly.