“What gets measured gets done” – it 
seems like the source of this quote, often attributed to management 
expert Peter Drucker, isn’t certain, but its meaning is clear and very 
relevant for every SaaS founder. If you want to make sure that you make 
best use of your scarce resources, you need to have a clear 
understanding of your objectives and the KPIs that measure your progress
 towards those objectives.
Depending on the stage that you’re in 
you’ll want to focus on different metrics. I’ve tried to illustrate this
 in the following diagram:
|  | 
| (click image for larger version) | 
As
 you can see, I segmented the company lifecycle into three major phases:
 pre product/market fit, post product/market fit but pre-scale, and 
post-scale (being fully aware that there is no distinct definition of 
“product/market fit” and “scale” and that the transition from one phase 
to the next one is a gradual one). At the bottom I noted what these 
phases usually mean in terms of the stage of your product and company 
and which funding level it typically corresponds with. Note that the 
x-axis is not a true-to-scale representation of time elapsed. For a 
true-to-scale representation I would have to add much more space between
 the Series A and the Series B and between the Series B and the Series 
C.
The key message of the chart is that in the beginning you can 
focus on a small set of metrics, but as time goes by and you’re making 
progress you need to add additional KPIs to your cockpit.
Let’s have a closer look at each of the three phases.
Pre product/market fit
I’ve written about it before in my posts about 
sales and 
unscalable hacks:
 In the very beginning, when you’re in the process of finishing the 
first version of your product and trying to get the first customers, you
 shouldn’t worry too much about metrics. Firstly there just aren’t many 
metrics to keep an eye on yet. Secondly you should be 
obsessively focused on getting to product/market fit (Marc Andreessen’s words), and that means you should spend your time talking to customers and developing the product.
That said, the following metrics are relevant in the pre product/market fit phase:
- User
 feedback: Most of the user feedback that you collect in this phase is 
qualitative rather than quantitative, but if you talk to a larger number
 of potential users you might also be able to add some quantitative elements. For 
example, you could ask users to rate your prototype and see if that 
rating goes up over time.
- Development velocity: I 
don’t know if (or how strictly) you should use a software development 
methodology like Scrum, which allows you to nicely visualize your 
development velocity, in the very early days, when you’re maybe just two
 developers – I would be very interested in your thoughts on that 
question. At any rate, however, I think it’s a good idea to break down 
your project into a larger number of smaller pieces, features or “story 
points” early on. This will help you in getting an understanding of your
 development speed, which later on will become more and more important.
- Waiting
 list signups: When you put up a landing page to collect email addresses
 for your waiting list, track how many signups you’re getting. Driving 
signups probably isn’t a key priority for you at this stage but it’s an 
indication of interest in your product and hey, you’ll still have some 
space on your Geckoboard which you can fill with a nice chart! :)
Once
 you let potential customers try your product, the real fun begins. At 
that point, you should track 
signups and some indicators for 
activation 
and 
usage, which, for obvious reasons, are precursors to your ultimate 
goal, paying customers. What the right indicators for activation are 
depends on the type of your product. It could be a profile completion 
and the setup of a customized pipeline in case of a CRM application, the
 installation of a tracking snippet for a Web analytics product or… you 
get the idea. Similarly, usage metrics are highly specific to your 
application, so think about what the right events and parameters are in 
your particular case and make sure that you instrument your application 
accordingly. If your solution is a little more enterprisey and you’re 
working with a higher-touch sales model you may also want to track 
qualified leads along with trial signups.
In order to succeed you
 need happy customers who do free marketing for you, otherwise customer 
acquisition will always be an uphill battle. Therefore you should also 
consider regular 
Net Promoter Score (NPS) surveys. If you’re looking for the best survey tool, 
I have a tip for you.
Post product/market fit, pre scale
As
 you’re slowly but surely getting to product/market fit and starting to 
get the first paying customers (yay!), your 
trial-to-paid conversion 
rate becomes one of the most vital metrics. It’s hard to give you a 
benchmark, since your conversion rate not only depends on the quality of
 your product and the onboarding experience but also on many other 
things such as leads quality, pricing and many other 
factors. With that caveat in mind, the typical range that we’re seeing 
is between 5% and 25%.
Equally important is your 
retention, 
usually tracked by measuring 
churn (the inverse of retention), since 
your CLTV (customer lifetime value) is a direct function of how much you
 charge your customers and how long they stay on board. As a very rough
 rule of thumb you should try to get your churn rate to 1.5-3% per 
month.
Make sure to track churn not only on an account basis but 
also on an MRR basis. Your MRR-based churn rate will hopefully be 
significantly lower than your account-based churn rate, since smaller 
customers tend to have a higher churn rate and because your loyal 
customers will hopefully pay you more and more over time. Also, make 
sure that you avoid 
SaaS Metrics Worst Practice #8, mixing up monthly and yearly plans. Finally, if you want to get a good estimate of your customer lifetime, take a look at 
retention on a cohort basis.
If
 you don’t have a KPI dashboard yet that gives you an at-a-glance look 
at your key metrics, now is the time to build one. Here’s 
a template that I’ve created, along with some additional notes.
As
 you’re moving on, arguably the most important metric becomes 
MRR, and specifically 
net 
new MRR that you’re adding each month. Net new MRR is calculated using 
this simple formula:
Also
 keep an eye on your ARPA (average revenue per account). It’s an 
important metric at all times for obvious reasons, but as you’re nearing
 the next phase it’s becoming even more important.
Post scale
When
 you’ve reached a certain level of success, say you’re at around $500k 
MRR, the biggest challenge (besides growing a bigger organization and 
mastering all kinds of growing pains of course) is to find ways to 
profitably acquire customers at a much higher scale. By this time you’ve
 picked all the low-hanging fruits, and you may have maxed out what you 
can reasonably spend on AdWords to buy traffic and leads.
Therefore
 you’ll have to focus on the relationship between your CLTV and your 
CACs (customer acquisition costs), your 
CLTV/CAC ratio, which measures 
the ROI on your sales and marketing investments. Another way to look at 
it is your 
CACs payback time, which tells you how many months of 
subscription revenue it takes to recoup customer acquisition costs. If I
 had to choose I’d pick this one, since CLTV is always an estimate which
 can be more or less accurate.
A few last points:
- Many
 startups struggle to get all these numbers together because different 
numbers are collected in different systems (e.g. Web analytics software,
 billing systems, self-made databases,...), which often leads to 
inconsistencies. I don’t have a simple and general advice for this 
issue, I might address it in another post.
- If you’re 
not sure which metrics to track, e.g. which events in your application, 
err on the side of tracking too much data even if you have no immediate 
use for it. You never know if it becomes useful in the future, and the 
costs for tracking large amounts of data are no longer very high 
nowadays.
- If you want to read more about SaaS metrics, I highly recommend David Skok’s blog and Joel York’s blog, as well as Jason M. Lemkin and Tomasz Tunguz.
That was it for the 8th DO for SaaS startups – questions, comments and suggestions are as always very welcome!
[Update 01/17/2015: There's a new company called 
ChartMogul (
which we invested in) which makes it easy to get a real-time dashboard of your SaaS metrics. 
Check it out!]