SKAN raw-data reports

At a glance: SKAN raw data reports contain row-level data generated after translating and decoding postbacks received by AppsFlyer from iOS, as well as raw SKAN postbacks. Data is available via Data Locker and Push API. If your subscription plan includes raw data, there is no need for a Data Locker subscription.

Principles:

Data is provided by:
- Data Locker.
  - Note! Available to accounts having a raw data subscription. Meaning, there is no need for a Data Locker subscription. If you aren't currently using Data Locker, the admin must configure Data Locker and enable the SKAN reports. To do so, go to Integration > Data Locker. Select the SKAN reports.
  - Data freshness rate: Daily. Data is contained in the h=23 folder of the date the postback is received by AppsFlyer. Example: If the postback was received on Monday, it is processed after the end of the day. Processing is completed, by 12:00 UTC Tuesday, the data is written to the Monday h=23 folder.
- Push API
  - Data freshness: See Push API for SKAN data.
Install date:
- The install date is derived from the postback arrival time.
- By default, the install time is 48 hours before postback arrival. As such, reports contain installs of multiple days.
- If you use custom conversion value, the formula to derive the install time is:
  postback arrival time-24 hours-hours_from_install.

Report types available are:

Device postback: 1 device postback per install or redownload received from the iOS device.
SKAN raw data:
- AppsFlyer decodes and translates the device postback into raw data records.
- Each postback generates an install or re-download record and in-app event records.
- The number of in-app event records depends on the conversion value (CV) as follows:
  - CV = 0, blank, or null: No in-app records are generated.
  - CV range 1-63: The number of in-app records depends on your measurement settings.

Why are some fields empty? This occurs for any of the following reasons:

Non-mandatory enrichment fields like campaign_name, ad_network_campaign_id, ip that the ad network did not provide.
Apple withheld the data due to Apple threshold policies. Fields like source_app_id, skad_campaign_id, skad_conversion_value.

Report types

Report type Event type Description

Postback

Postbacks from iOS

Copy of device postbacks sent by the iOS to AppsFlyer. (The postbacks are sent via the ad network). Download postbacks example (CSV).

Topic name in Data Locker: skad_postbacks

Decoded event

Installs

First-time app installs

SKAN reported redownload=false. Meaning, this is the first time the user, represented by the Apple ID, downloaded the app. Download installs example (CSV).

Topic name in Data Locker: skad_installs

Decoded event

Redownloads

App installs that are not first-time installs

SKAN reported redownload=true. Meaning, this is not the first time the user, represented by the Apple ID, downloaded the app. This report has the same structure as installs.

Topic name in Data Locker: skad_redownloads

Decoded event

In-app events

In-app events

Starting July 21, 2021, there are changes to how we provide in-app event raw data as detailed in the tables.

The number of in-app event records depends on your measurement settings.

Download in-app events example (CSV).

Valid for iOS postbacks received starting July 21, 2021
Measurement type	Description
Revenue	Revenue of a given user. If revenue > 0, a record containing the skad_revenue and event_name fields. The fields min_revenue and max_revenue are populated with your custom conversion range values. In most cases, you don't need to consider them.
In-app conversion and funnel events	A record for each unique conversion event performed. The event_name field is populated accordingly. If no events are performed, there is no record. Conversion events have min_event_counter = 0 and max_event_counter = 1.
In-app engagement	To determine the number of times a user performed a given in-app event use the formula`[round up (min_event_counter + max_event_counter) / 2]`

Valid for iOS postbacks received until July 20, 2021.
Measurement type	Number of records	Description
Revenue	0-1	If revenue > 0, a record containing the skad_revenue and event_name fields.
Conversion	0-6	A record for each unique conversion event performed. The event_name field is populated accordingly. If no events are performed, there is no record.
Engagement	0-63	The number of records represents the number of times the user performed the engagement event. If the user does not engage, there are no engagement records.
Custom	0-unlimited	According to your custom conversion schema.

SKAN raw data fields

Field formats
Format name	Description
String [n]	The maximum length of the string. We don't usually enforce field length limitations on receipt of the data, but data may be truncated thereafter.
Time string	String having the format, `yyyy-mm-dd hh:mm:ss`. For example, `2019-09-17 00:09:25`
Enum [n]	Enum fields can only contain specific values. For example, Cost currency has 3 characters and can contain only currency codes as specified.
Timestamp	10-digit UNIX timestamp. Example: August 4, 2020, 07:25 UTC translates to `"timestamp": "1596525944"`
Boolean	The value of the field can be either `TRUE` or `FALSE`
Integer	Integer
Float	Real floating number that can have a decimal point and values after the decimal point.

Postback raw data fields
Field name	Source or iOS SKAN starting version	Description	Format
ad_network_campaign_id	Ad network	Campaign ID reported by the ad network to AppsFlyer	String
ad_network_campaign _name	Ad network	Campaign name reported by the ad network to AppsFlyer.	String
ad_network_timestamp	Ad network	Time the ad network received the postback. In the case of Google Ads, the time is derived from the last-click time reported by Google.	Timestamp
app_id	AppsFlyer	App ID (advertiser app) with prefix ID.	String
city	AppsFlyer+		String
country_code	AppsFlyer or ad network*		String
dma	AppsFlyer+		String
postal_code	AppsFlyer+		String
region	AppsFlyer*		String
skad_ad_network_id	1.0	ID of the ad network to whom the postback was sent. Some SRNs don't share their ID, and the field is left blank. For example, Twitter.	String
skad_attribution_signature	1.0		String
skad_campaign_id	1.0	Campaign ID used to publish the ad. Range 0-100	String
skad_conversion_value	2.0	Conversion value reported by iOS. Range 0-63. Field population depends on privacy thresholds**	Integer
skad_redownload	2.0	If true, app was redownloaded	Boolean
skad_source_app_id	2.0	Site ID. The app publishing the ad. This field is identical to source_app_id. Field population depends on privacy thresholds**	String
skad_transaction_id	1.0		String
skad_version	2.0		String
timestamp	Ad network	Time the iOS device sent the postback. In the case of Google ads, this time is derived using the last-click time reported by Google Ads.	Timestring
ad_network_name	Ad network	Ad network name reported by the ad network to AppsFlyer. If this field is blank, the ad network didn't (couldn't) populate it. You can resolve the ad network name using skad_ad_network_id. Use this table to do so.	String
ip		IP address in the HTTP message of the iOS device sending the postback. This field is populated if the ad network provides us with the address. Note! The SDK isn't involved in getting the address.	String
skad_app_id	1.0		String
source_app_id	AppsFlyer	Site ID. The app publishing the ad. This field is identical to skad_source_app_id	String
ad_network_adset_id	Ad network		String
ad_network_adset_name	Ad network		String
ad_network_ad_name	Ad network		String
ad_network_ad_id	Ad network		String
did_win (1)	3.0 (iOS 14.6)	Used to distinguish between campaigns contributing or attributed with the install. If true, the campaign is attributed for bringing the install. If false, the campaign is recognized as contributing to the install	Boolean
fidelity_type (1)	2.2 (iOS 14.5)	Differentiate between ad presentation options that affect attribution. Indicated using the values 0 and1 as follows: View-though ads (0) StoreKit-rendered ads (1) Disregard the field value if the SKAN version is before 2.2	Integer
ad_network_source_app_id (1)	Ad network	Publisher app ID reported by the ad network. Use to help reconcile cost; reported by the ad network. The publisher app gives the basis for this data.	String
ad_network_channel (1)	Ad network		String
af_prt (1)	Ad network		String
* Derived using the source IP address of the postback sent by iOS or by country code reported by the ad network. + Derived using the source IP address of the postback sent by iOS. ** Apple determines if the field is populated using a privacy-threshold mechanism (1) Starting June 2, 2021, the field is added to reports but won't necessarily be populated.

Decoded event raw data fields
Field name	Source	Description	Format
ad_network_campaign_id	Ad network	Campaign ID reported by the ad network to AppsFlyer	String
ad_network_campaign _name	Ad network	Campaign name reported by the ad network to AppsFlyer	String
ad_network_timestamp	Ad network	Time the postback was received by the ad network In the case of Google Ads, this field isn't populated.	Timestamp
app_id	iOS	App ID (advertiser app)	String
city	AppsFlyer*		String
country_code	AppsFlyer*		String
dma	AppsFlyer*		String
event_name	AppsFlyer	In-app event name	String
event_uuid	AppsFlyer	A unique random identifier enabling partners to identify duplicate postbacks	String
install_date	iOS	Estimated by AppsFlyer based on the update Conversion window.	Time string
install_type	iOS	New installs	String
ip	iOS	IP address in the HTTP message of the iOS device sending the postback. This field is populated if the ad network provides us with the address. Note! The SDK isn't involved in getting the address.	String
media_source	iOS	Ad network attributed using AppsFlyer network names	String
postal_code	AppsFlyer*		String
region	AppsFlyer*		String
skad_ad_network_id	iOS	ID of the ad network to whom the postback was sent	String
skad_ambiguous_event	AppsFlyer	If true, the iOS postback was received during the first 72-hours after an advertiser changed the SKAN settings in the dashboard. Due to the various timers employed by SKAN AppsFlyer can't map the event accurately.	Boolean
skad_attribution_signature	iOS		String
skad_campaign_id	iOS	Campaign ID used to publish the ad. Range 0-100	Integer
skad_conversion_value	iOS	Conversion value reported by iOS. Range 0-63. Field population depends on privacy thresholds**	Integer
skad_mode	AppsFlyer	The conversion measurement mode used to decode the iOS postback. Options: total, revenue, events, engagement, custom_encode, custom_decode	String
skad_redownload	iOS	If true, app was redownloaded	Boolean
skad_revenue	iOS	Event revenue amount in USD.	Float
skad_source_app_id	iOS	Site ID. The app publishing the ad. Field population depends on privacy thresholds**	String
skad_transaction_id	iOS	-	String
skad_version	iOS	-	String
timestamp	iOS	Time the postback was sent by the iOS device. In the case of Google ads, this time is derived using the last-click time reported by Google Ads.	Timestamp
event_value	S2S	Default value: null Contains a string set by apps implementing custom decode or event sending by S2S. Advertisers consume this in their systems. AppsFlyer doesn't make use of it.	String (JSON)
ad_network_adset_id	Ad network		String
ad_network_adset_name	Ad network		String
ad_network_ad_name	Ad network		String
ad_network_ad_id	Ad network		String
skad_did_win (1)	3.0 (iOS 14.6)	Used to distinguish between campaigns contributing or attributed with the install. If true, the campaign is attributed for bringing the install. If false, the campaign is recognized as contributing to the install	Boolean
skad_fidelity_type (1)	2.2 (iOS 14.5)	Differentiate between ad presentation options that affect attribution. Indicated using the values 0 and1 as follows: View-though ads (0) StoreKit-rendered ads (1) Disregard the field value if the SKAN version is before 2.2	Integer
ad_network_source_app_id (1)	Ad network	Publisher app ID reported by the ad network. Use to help reconcile cost; reported by the ad network. The basis for this data is provided by the publisher app.	String
ad_network_channel (1)	Ad network		String
af_prt (1)	Ad network		String
min_revenue	AppsFlyer	See note (4)	Real number
max_revenue	AppsFlyer	See note (4)	Real number
min_event_counter	AppsFlyer	Use to calculate the number of times a user performs an event. See note (3)	Integer
max_event_counter	AppsFlyer	See note (3)	Integer
min_time_post_install	AppsFlyer	See note (5)	Integer
max_time_post_install	AppsFlyer	See note (5)	Integer
af_attribution_flag (2)	AppsFlyer	Reserved for AppsFlyer future use	Boolean
measurement_window (2)	AppsFlyer	Duration of the activity window. Default 24h.	Integer
interval (2)	AppsFlyer	Activity window intervals.	Integer
user_agent (2)	AppsFlyer	Device user agent	String
* Derived using the source IP address of the iOS posback or by country code reported by the ad network. + Derived using the source IP address of the iOS postback. ** Apple determines if the field is populated using a privacy threshold mechanism Starting June 2, 2021, the field is added to reports but won't necessarily be populated. Starting October 18, 2021, the field is added to reports but won't necessarily be populated. To determine the number of times a user performs a given in-app event use the formula: `[round up (min_event_counter + max_event_counter) / 2]` . Note! You must round up the nearest integer. Example: A. If min = 0 and max = 1 the average is 0.5; rounding up returns a result of 1. B. If min = 5 and max = 10 the average is 7.5; rounding up returns a result of 8. Revenue is always provided in the field `skad_revenue`. If you use Custom mode, the bucket range associated with the event and used to calculate skad_revenue is described by min_revenue and max_revenue. In Custom monversion, AppsFlyer calculates install time as the postback arrival time - 48h - average (min_time_post_install + max_time_post_install).

Traits and limitations

SKAN Solution
Trait	Remarks
Ad network access	Ad networks are provided with postbacks
Agency access	Not available
Agency transparency	N/A
Timezone	UTC
Currency	USD
Organic data	Based on SDK event data. For example, organic install metrics are calculated as follows: Data of all installs reported by the SDK less non-organic installs reported by SKAN.
Non-organic data	Based on SKAN postbacks
Data freshness	Daily. SKAN timing means that iOS reports installs 48–72 hours after the first app open.
Historical data	Earliest date, availability of iOS 14 (September 16, 2020)
Team member access	Available. According to account permissions

SKAN raw-data reports