Ad system
firstimpression.io
Most of the 38,938 apps that declare firstimpression.io reach it through a reseller: 97% have a RESELLER line, 20% a DIRECT one (3,767 files, 2,743 of them through ignitemediatech.com's account). Of 6,314 lines checked against its sellers.json (204 sellers), 87% match, 4.2% name an unlisted account and 9.3% declare the wrong seller type. 2 sellers left its sellers.json in the last 30 days.
- Apps declaring it
- 38,938
- Sellers in sellers.json
- 204
- Lines verified
- 87%
- Lines with errors
- 851
- Avg. supply path score
- 50.5 / 100
7,905 DIRECT · 37,876 RESELLER
0% confidential
5,462 of 6,314 checked lines
6,314 lines in total
38,370 apps scored
App counts, the sellers.json breakdown and the directory ranking are as of , recomputed daily (the same numbers as the directory). Line counts are recounted every 10 minutes. sellers.json last read 13 October 2026. The supply path score sums up how short and clean the declared paths are, 0 to 100 (how it is computed).
How to add firstimpression.io to app-ads.txt
One line per account, in the app-ads.txt at the root of the domain your App Store and Google Play listings name as the developer website.
firstimpression.io, YOUR_ACCOUNT_ID, DIRECT
firstimpression.io, YOUR_ACCOUNT_ID, RESELLER- Field 1:
firstimpression.io, the domain firstimpression.io uses in app-ads.txt. - Field 2: your account ID with firstimpression.io. It must equal the
seller_idin firstimpression.io's sellers.json. - Field 3: DIRECT if you hold the account, RESELLER if a partner holds it and sells your inventory. DIRECT vs RESELLER
- Field 4 (optional): a certification authority ID. Most lines naming firstimpression.io carry none, or different ones, so we do not suggest one.
sellers.json at a glance
- Status
- Published
- Sellers listed
- 204
- Confidential
- 0 (0%)
- Passthrough
- 0
- Removed, last 30 days
- 2
- Last read
- Oct 13, 2026
- PUBLISHER179
- INTERMEDIARY22
- BOTH3
Cross-check of lines naming firstimpression.io
- Verified 5,462
- Seller ID not found 263
- DIRECT but intermediary 10
- RESELLER but publisher 578
- Seller type BOTH 1
- Confidential seller 0
- No sellers.json 0
- Unchecked 0
Every line naming firstimpression.io is looked up in its sellers.json. What each status means
Common errors with firstimpression.io lines
-
RESELLER but publisher
578 lines
If the account is yours, declare it DIRECT. If a partner holds it, ask firstimpression.io why the account is listed as PUBLISHER.
-
Seller ID not found
263 lines
Ask firstimpression.io for the account ID it lists for you in its sellers.json, correct the line, or remove it if you no longer work with them. Buyers that check sellers.json drop these paths.
-
DIRECT but intermediary
10 lines
If a partner holds this account and resells your inventory, the line should say RESELLER. If the account is yours, ask firstimpression.io to list it as PUBLISHER.
-
Seller type BOTH
1 line
The account is listed as BOTH, so sellers.json alone cannot tell a buyer which relationship applies. Nothing to fix on your side; buyers usually look at the seller's domain.
Intermediaries most declared as RESELLER
Accounts on firstimpression.io that its sellers.json lists as INTERMEDIARY or BOTH, by the number of app-ads.txt files declaring them. Confidential sellers are left out.
| Seller domain | Type | Files |
|---|---|---|
| ignitemediatech.com | INTERMEDIARY | 2,743 |
| bidmachine.io | INTERMEDIARY | 2,082 |
| pubnative.net | INTERMEDIARY | 211 |
| mgid.com | INTERMEDIARY | 12 |
| velocity.io | INTERMEDIARY | 4 |
Apps that declare firstimpression.io
| App | Store | Relationship | Status |
|---|---|---|---|
| Android | DIRECT | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | DIRECT + RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | DIRECT | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live | |
| Android | RESELLER | Live |
Questions about firstimpression.io
Does firstimpression.io publish a sellers.json?
Yes. Its file at https://firstimpression.io/sellers.json listed 204 sellers when we last read it on 13 October 2026: 179 publishers, 22 intermediaries and 3 listed as both; 0% are confidential.
How many apps declare firstimpression.io in app-ads.txt?
38,938 apps in Stoqlab's data (delisted apps included) declare firstimpression.io: 7,905 with at least one DIRECT line and 37,876 with at least one RESELLER line, across 3,767 app-ads.txt files, as of 14 October 2026 (recounted daily).
Why do firstimpression.io lines fail verification?
Of 6,314 lines naming firstimpression.io, 851 contradict its sellers.json. The most common case is "RESELLER but publisher", on 578 lines. If the account is yours, declare it DIRECT. If a partner holds it, ask firstimpression.io why the account is listed as PUBLISHER.
Not sure whether your line should say DIRECT or RESELLER? DIRECT vs RESELLER in app-ads.txt
Sources: the public app-ads.txt files of tracked apps and the sellers.json of firstimpression.io. Something wrong? Tell us.