Keyword installs, direct installs or CPI? See what each one moves, why keyword installs rarely cause a spike in installs, and how to choose according to your goal.
In short: These three options solve different problems. Keyword installs aim to improve your app's rank for particular search terms. Direct (package) installs add to your total volume of downloads, which can support your position in a category or on the top charts. CPI campaigns (Apple Search Ads, Google App campaigns, ad networks) buy installs from paid placements that can be attributed. Most complaints that "it didn't work" come from measuring one tool against another tool's goal, for example expecting keyword installs to produce a visible spike in your total install count. Choose the tool according to your goal, then judge it by the metric that the tool actually moves.
Every week we speak to developers who ran a campaign, opened App Store Connect or Google Play Console, and saw next to nothing change on their install chart. Some assume the campaign failed. Often it didn't: they were simply looking at the wrong number.
This guide compares the three most common ways in which apps buy growth, explains why the results appear in different places, and offers a simple decision matrix to help you choose between them.
Keyword installs.
A user searches for a specific keyword in the store, finds your app in the results and installs it. The aim is to strengthen the link between that keyword and your app so that your search rank improves. The installs themselves aren't the product; the ranking is.
Direct installs (package installs).
Installs that aren't tied to a particular search term. Their job is to raise the total volume of downloads over a short period, which feeds into category rank and the top charts.
CPI (cost-per-install) campaigns.
Paid placements (Apple Search Ads, Google App campaigns or third-party ad networks) where you pay for each install that comes from an ad. Installs are attributed to the source of the ad and measured through your attribution tool.
| Comparison | Keyword installs | Direct installs | CPI campaigns |
|---|---|---|---|
| Main goal | Search rank for chosen keywords | Total downloads, momentum in category and top charts | Paid installs that can be attributed |
| What to measure | Keyword rank, search impressions, organic installs from search | Category rank, total downloads during the campaign | Cost per install, retention, ROAS |
| Appears as a big spike in installs? | Usually not, as the volume is modest and spread out | Yes, during the campaign window | Yes, under the paid source |
| Time before movement shows | iOS: a few days; Google Play: roughly 7–9 days | 1–3 days for effects on charts | Immediate while the ads run |
| Prerequisite | The app should already rank in the top 250 for the keyword | Nothing specific | Ad account, creatives, budget |
| Typical ASOWorld starting price* | Android from $0.20, iOS from $0.30 | Android from $0.15, iOS from $0.30 | Set by the ad platform and the market |
| Best for | Owning specific search terms | Launches, pushes up the charts, seasonal peaks | Scaling up, with data on tracking and retention |
This is the single most common misunderstanding. Several things are happening at once:
What to measure instead: keyword rank (daily, at the same time), search impressions for that term, and organic installs from search over the following two to four weeks.
Another frequent source of confusion. Search results can vary according to:
A tracking tool samples results in a consistent way, while your phone shows just one slice. Use the tool for trends and your phone only as a spot check.
| Your goal | Start with | Add later | Measure by |
|---|---|---|---|
| Rank for 3–5 important search terms | Keyword installs | A little support from direct installs during launches | Keyword rank, search impressions |
| Climb a category chart ahead of a seasonal peak | Direct installs | Keyword installs to hold key terms afterwards | Category rank, total downloads |
| Acquire users that you can attribute and retarget | CPI campaigns | Keyword work on terms that your ads prove convert | CPI, day-7 retention, ROAS |
| Fix a low or thin rating | In-app rating prompt + better-matched traffic | Review support with retention terms | Rating trend, review retention |
| New app, no track record | Keyword installs on long-tail terms | Direct installs at launch | Rank on long-tail terms, first ratings |
The strongest results usually come from combining the tools in sequence rather than choosing one for good:
On iOS, keyword installs work on terms for which your app already ranks in the top 250 in the target country. For download volume and momentum in the charts, direct app installs are the better-suited tool. If you'd like help deciding on the mix, the full app promotion service covers planning across both stores.
This is how a hypothetical new fitness app might sequence the tools in its first month on iOS in a single country:
| Days | Keyword installs | Direct installs | CPI campaigns | Check |
|---|---|---|---|---|
| 1–7 | 3 long-tail terms already in the top 250, at a steady daily pace | Short launch support for visibility in the category | Off, as creatives are still being tested | Rank on the 3 terms; category rank |
| 8–14 | Continue; add 1 mid-volume term | Taper off | Small test on Apple Search Ads | Which terms have reached the top 10? |
| 15–21 | Ease top-10 terms down to a maintenance pace | Off | Scale up the ad group that converts best | Search impressions, cost per install |
| 22–30 | Add terms that the ads have shown to convert well | Off unless a seasonal push is planned | Hold | Organic search installs compared with day 1 |
The specific volumes will differ for every app. The point is that each tool has a job, a window of time and its own measure of success.
None of these three tools is a strategy for ratings. Installs from users who didn't find what they were looking for can even damage your rating. To build ratings that last:
It's worth being clear-eyed about a few things:
Report each tool against its own metric:
| Tool | Headline metric | Supporting metrics |
|---|---|---|
| Keyword installs | Rank on target keywords | Search impressions, organic search installs |
| Direct installs | Position in category / top charts | Total downloads, organic uplift after the campaign |
| CPI | Cost per install | Retention, ROAS |
When keyword ranks improve, the real proof lies in your organic results over the following few weeks. Teams that track this well tend to see the effect described on our keyword rankings and organic downloads page: rank first, then the downloads that follow.
“Keyword installs should double my daily downloads.”
They're aimed at rank. Downloads follow once the higher rank brings in more search traffic.
“Direct installs will get me ranking for keywords.”
Not reliably. They support position in the charts, not a specific search term.
“CPI is always the expensive option.”
Not always, as it depends on the market and the category. Its advantage lies in the data on attribution and retention.
“If my phone doesn't show the new rank, the campaign has failed.”
Check the target country and the device, and rely on consistent tracking.
They're real installs, but the volume is modest and spread out, and store consoles report them by source and with delays, so they rarely appear as a visible spike. Judge them by keyword rank and by the organic installs that follow.
Keyword installs come from users who searched for a specific term, with the aim of improving the rank of that term. Direct app installs raise your total volume of downloads, which supports your position in the category and the top charts.
They serve different goals. CPI delivers paid installs that can be attributed, along with data on retention, whereas keyword installs target search rank for chosen terms.
On iOS, movement often appears within a few days of continuous activity. On Google Play, allow about seven to nine days for ranks to settle.
Rankings vary by country, device, OS version, account and time of day. Use a tracking tool to follow trends.
Yes. A common sequence is direct installs for momentum at launch, keyword installs to hold priority search terms, and CPI to scale up whatever converts.
Choose the tool according to your goal and measure it by its own metric, and the numbers will stop contradicting one another.
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