Definition:
Last click attribution is an attribution model that assigns 100% of the credit for a conversion to the last ad or touchpoint a user interacted with before completing the desired action. It is the most widely used attribution model in mobile marketing and serves as the default approach for most ad networks and measurement platforms.
What Is Last Click Attribution?
ラストクリックアトリビューション assigns full credit for a conversion to the final touchpoint in a user's journey before they convert.
This means that any user that saw different ads, no matter how many, before installing your app, the campaign tied to the last click, gets all the credit. This also means that the earlier touchpoints along the journey do not receive any credit.
This model is straightforward, consistent, and easy to act on. It tells you which ad directly preceded a conversion, which makes it a practical default for mobile user acquisition where the install event is the primary goal. It is also the reason it remains the most commonly used attribution model approach in mobile marketing today.
How the Last Click Attribution Model Works
The mechanics are simple. When a user converts, the attribution platform looks back through the recorded touchpoints and identifies the most recent click. That click, and the campaign, network, or creative it belongs to, receives credit for the conversion.
Here is a practical example:
- A user sees a display ad for your app on Monday but does not click
- On Wednesday they click an ad on a social network but do not install
- On Friday they click an ad on a different network and install the app
Under last click attribution, the Friday ad network receives 100% of the credit for that install. The Wednesday click and the Monday impression receive nothing.
This is clean and decisive, which is exactly why it became the industry standard. Every conversion has one clear owner, which simplifies reporting, billing, and optimisation decisions.
What Attribution Model Approach Is Mainly Used in Marketing?
Last click attribution is the dominant model in mobile marketing. Most ad networks default to it, most MMPs report on it, and most UA teams build their optimisation strategies around it.
Its popularity comes down to practicality. It is easy to implement, easy to understand, and produces clear, consistent results. When you are managing campaigns across multiple networks and need a reliable way to assign credit and calculate ROAS, last click attribution provides a stable foundation.
That said, it is not the only model available, and it is worth understanding where its limitations lie before treating it as the complete picture.
First Click vs. Last Click Attribution
Understanding the difference between first click and last click attribution helps you choose the right model for your measurement goals.
| First Click Attribution | Last Click Attribution | |
| Credit goes to | The first touchpoint a user interacted with | The last touchpoint before conversion |
| Best for measuring | Awareness and discovery channels | Direct response and conversion channels |
| Strength | Shows what introduced users to your app | Shows what drove the final decision to convert |
| Limitation | Ignores the role of later touchpoints | Ignores the role of earlier touchpoints |
| Common use case | Brand campaigns, top of funnel | UA campaigns, install attribution |
Neither model tells the complete story of how a user moved from discovery to conversion. First click attribution over-rewards awareness. Last click attribution over-rewards closing. The right model depends on what question you are trying to answer.
For most mobile UA campaigns where the install is the primary conversion event, last click attribution is the most relevant and actionable choice.
Strengths and Limitations of Last Click Attribution
Strengths
Simplicity
Every conversion has one clear source. This makes reporting straightforward and keeps billing disputes with ad networks to a minimum.
Actionability
Because you know exactly which campaign drove each install, you can make direct optimisation decisions. Cut the campaigns with high spend and low conversions. Scale the ones delivering results.
Industry Consistency
Most ad networks and MMPs default to last click, which means your data is more comparable across platforms and partners.
Limitations
It Ignores the Full User Journey
A user who saw five ads before converting was influenced by more than just the last one. Last click attribution gives no credit to the earlier touchpoints that built awareness and intent.
It Can Undervalue Upper Funnel Channels
Channels that consistently introduce users to your app but rarely appear as the last click before install will look like they are underperforming under this model, even if they are playing an important role.
It Can Inflate the Value of Retargeting
Retargeting campaigns often appear as the last click before a conversion, but the user may have already been close to converting anyway. Last click attribution can make retargeting look more effective than it actually is.
How to Tell If You Are Using Last Click Attribution
Most mobile measurement platforms and ad networks apply last click attribution by default. If you have not explicitly changed your attribution model settings, you are almost certainly operating on last click.
To confirm:
- Check your MMP settings for attribution model configuration
- Review how your ad networks assign conversion credit in their reporting documentation
- Look at whether conversions in your dashboard are tied to single touchpoints or distributed across multiple interactions
If every conversion in your reports has one clear source with no credit splitting, you are on last click attribution.
How Tenjin Handles Last Click Attribution
Tenjin uses last click attribution as the default model for mobile app install attribution, consistent with industry standards. When a user installs your app, Tenjin attributes that install to the last tracked click within the attribution window, and connects it to the campaign, network, and creative respectively.
With Tenjin, you can:
- View last click attribution data across all major ad networks in one dashboard
- 分析 ROAS, CPI、 LTV at the campaign and creative level
- Compare performance across networks using consistent attribution logic
- Export raw attribution data via DataVault or Raw Data Exporter for deeper analysis
- Connect attribution data to pLTV models for smarter forecasting beyond the install event
Related Terms
よくある質問
What is last click attribution?
Last click attribution is a model that assigns all conversion credit to the final ad or touchpoint a user interacted with before converting. In mobile marketing, this typically means the last clicked ad before an app install receives full attribution credit.
What is the difference between first click and last click attribution?
First click attribution credits the first touchpoint a user interacted with, which is useful for measuring awareness channels. Last click attribution credits the final touchpoint before conversion, making it more relevant for direct response and UA campaigns. Neither model captures the full user journey.
How does Tenjin use last click attribution?
Tenjin applies last click attribution as the default model for app install attribution. Each install is credited to the last tracked click within the attribution window, giving you clear, campaign-level data to measure ROAS, optimize spend, and make confident UA decisions.