For most mobile apps, yes: the same agency should manage your Meta Ads and your creative, because on Meta the ad itself does most of the work of finding the right user, and the fastest way to improve ads is to have the people who read the results brief the next round. That answer changes in three cases. If you already employ a strong media buyer, buy creative only. If your own team already makes ads that win, buy media buying only. And if you run several channels at high spend, two specialists can beat one generalist, as long as one named party owns the read across both.
We run media and creative together, so we have an obvious interest in the first answer. The case for combining them is real, and so are the risks, which combined agencies rarely list. This guide sets out both, shows with a worked example where a split set-up loses time, and gives the rules that make either model work. If you are still working out which of the two disciplines your account needs at all, start with our diagnostic in creative agency vs media buying agency.
Key takeaways
- The gain from combining is speed. Results reach the person writing the next brief the same day, not in the next report.
- The cost of combining is independence. The team that made the ad also tells you whether it worked.
- Many combined agencies are strong at one half and adequate at the other. Test both halves before you sign.
- A split set-up works when the creative team has account access and one party owns the brief and the read.
- The number of suppliers matters less than the number of hand-offs without an owner.
- Whichever you choose, your business should own the ad account, the files and the test log.
Why this question matters more on Meta than it used to
When media buying meant choosing audiences, bids and placements by hand, it was a separate craft from making ads, and splitting the two between suppliers cost little. Much of that manual work is now automated, and for app campaigns in particular the advertiser's main remaining inputs are largely the optimisation event, the budget and the creative. That pushes the two jobs together. A media buyer's most useful decision each week is often which concept to make next, and a creative strategist cannot make that decision well without seeing delivery, cost per trial and cohort data for each ad.
Two details in Meta's own documentation show how tangled the jobs now are. First, Meta's Business Help Centre lists "adding a new ad to your ad set" and "any change to ad creative" as significant edits, which send the ad set back into the learning phase. So the moment a new ad goes live is a media decision as well as a creative one. Second, Meta's creative fatigue status in Ads Manager is, by its own help page, not available for Advantage+ app campaigns. An app account running those campaigns gets no automatic warning that an ad is wearing out. A person has to read it from the numbers and act on it, and in a split set-up it is often unclear whose job that is. We explain both mechanics in our guides to the Meta Ads learning phase and creative fatigue for mobile apps.
The case for one agency
A closed feedback loop
The person who sees that a hook holds attention but brings in users who never start a trial is the same person, or sits next to the person, who writes the next script. Nothing has to be summarised, exported or explained. The brief is written from the account, not from a slide about the account.
Speed
Every hand-off between companies adds waiting time: for the report, for the call, for the file transfer, for the next launch slot. A combined team removes most of those waits. The worked example below puts a number on it.
One party accountable for the result
When performance drops in a split set-up, the media agency can say the ads were weak and the creative agency can say the account was badly run, and both can be partly right. With one agency there is nobody else to point at. That does not make the agency better, but it does make the conversation shorter.
Less work for you
With two suppliers, someone on your side passes results one way and files the other, and settles disagreements. We described that hidden job as the assembly cost in our comparison of agencies and freelancers for user acquisition. It applies to two agencies just as much as to a team of freelancers.
Worked example: what hand-offs do to a quarter of testing
A creative test runs in a cycle: read the results, write the next brief, produce the ads, launch them, then wait for enough delivery to read again. The table below compares one cycle in the two set-ups. Every figure is an illustrative assumption in working days, not client data, and the split column assumes a common but avoidable arrangement in which the creative agency receives a fortnightly report and has no access to the ad account.
| Step in the cycle | One agency | Days | Two suppliers, report only | Days |
|---|---|---|---|---|
| Result reaches the person who writes briefs | Same day. The buyer and the strategist read the account together. | 0 | In the next scheduled report, passed on by the client. | 5 |
| Next brief written and approved | Written from the account itself. | 2 | Written from a report, with questions going back and forth. | 3 |
| Production | Same in both set-ups. | 5 | Same in both set-ups. | 5 |
| Hand-over and launch | The team that made the ad uploads it. | 1 | Files sent, renamed and scheduled into the buyer's next batch. | 3 |
| Working days before launch | 8 | 16 |
Add one week of delivery before each read, which is the same in both columns. The combined cycle takes about 2.6 weeks (8 working days is 1.6 weeks, plus one). The split cycle takes about 4.2 weeks (16 working days is 3.2 weeks, plus one). Over a 13-week quarter that is five rounds of testing against three.
Rounds per quarter = 13 weeks ÷ (working days before launch ÷ 5 + weeks of delivery before a read)
One agency: 13 ÷ (8 ÷ 5 + 1) = 5.0 rounds. Two suppliers, report only: 13 ÷ (16 ÷ 5 + 1) = 3.1 rounds.
The gap is larger than it looks, because each round is built on what the last one taught you. Five rounds is not just more ads tested. It is two more chances to correct course inside the same quarter.
Now look at where the extra eight days come from. Production is identical. All of the difference sits in the hand-offs: five days waiting for the report, one extra day on the brief and two on the launch. A split set-up that gives the creative team account access, holds a weekly joint read and agrees a fixed launch day can cut the wait for results to about a day, the brief to two and the launch to one. That brings the cycle to about nine working days and the quarter back to between four and five rounds. The number of logos on the invoices is not what slows an account down. Unowned hand-offs are.
One caution on the example. A week of delivery is enough to read early signals such as cost per trial on many accounts, but not paid conversion, which arrives later. Our guide to what an agency should do in the first 90 days explains how few mature cohorts a quarter really contains.
The case against: four risks of combining
1. One half is weaker than the other
Most combined agencies started as one thing and added the other. A media agency that bolted on a designer will produce tidy variations of whatever is already working and call it creative. A creative studio that added a junior buyer will make good ads and run them in a structure that cannot learn. From the outside both look like a full service. Because the strong half produces the reports and leads the calls, the weak half can stay hidden for months.
2. Nobody independent checks the work
In a split set-up, each supplier has a reason to notice the other's mistakes. That is irritating, and it is also useful. A combined agency marks its own homework: the team that made the ad decides how its results are reported. An agency that is honest will tell you when its own concept failed. You should not have to rely on that.
3. Dependency
If one supplier holds your campaigns and your creative supply, leaving means replacing both at once. That is manageable if you own the ad account, the data, the source files and the record of what has been tested. It is painful if you do not. Our guide to switching mobile app marketing agencies lists what to secure before you need it.
4. Paying for a bundle you half need
If you already have a capable buyer or a productive creative team, a combined retainer pays for a second one. Some agencies will unbundle and some will not, so ask before the proposal arrives. For how the different fee models work, see our guides to user acquisition agency pricing and performance creative agency pricing.
How to test both halves of a combined agency
The first risk is the one you can check before signing. Ask to meet the two people who would do the work, not the person selling it, and ask these.
For the creative half:
- Who writes the briefs, and what research do they start from?
- How many distinct concepts, not assets or edits, did your last app client get in a month?
- Is production done by your own team, or passed to another company?
- Show me a concept that failed and the brief that followed it.
For the media half:
- Which optimisation event would you choose for our app at our spend, and what would make you change it?
- How do you handle the delay in iOS attribution when judging a new ad?
- How do you add new ads without sending ad sets back into learning every week?
- Which number do you report against: the platform's, or revenue from our subscription data?
Then ask each of them one question from the other list. In a team that really works as one, the buyer can explain why the last concept was chosen and the strategist can explain the account structure. Our list of questions to ask a Meta Ads agency goes further on the media side.
Which set-up fits which app
| Your situation | Set-up that usually fits | Why |
|---|---|---|
| No in-house buyer or creative team, one main channel | One agency for both | Speed of learning matters most and nobody in house can run the hand-offs. |
| Strong in-house media buyer, thin creative supply | Creative-only partner | Paying a second team to buy media is paying twice. Give the creative team account access. |
| In-house creative team already producing winners | Media-only agency or a freelance buyer | The missing piece is campaign management, not ads. |
| Several channels at high spend | Specialist media team plus a creative partner | Channel depth starts to outweigh loop speed, provided someone owns the read across both. |
| Mobile game needing playables and gameplay capture | Specialist game creative studio plus a UA team | The formats are a specialism most combined app agencies do not have. |
| Two suppliers already, each blaming the other | Combine, or appoint one owner of the brief and the read | The problem is the missing owner, and a third supplier will not fix it. |
Spend moves the line as well. In our ranking of performance creative agencies for mobile apps we gave a rough rule from the accounts we see: below about £100,000 a month, buying both together almost always wins, because loop speed matters more than the specialist depth you give up. Above that, an in-house media team with a specialist creative supplier works well. It is a rule of thumb from our own experience, not a benchmark. If you are weighing a hire against either model, our comparison of an in-house UA manager and a user acquisition agency covers that route.
If you split: five rules that make it work
- Give the creative team account access. Read-only access to the ad account and to your subscription data, not a report. This one change removes most of the delay in the worked example.
- Name one owner of the brief. Two parties writing briefs for one account means two strategies tested at once and no clean lesson from either. We cover this in performance creative agency vs UGC agency.
- Name one owner of the read. One party decides whether a concept worked, using one agreed source of revenue data. Otherwise each supplier grades the test on the metric that flatters it.
- Agree a launch calendar. Because adding an ad is a significant edit, the buyer needs to batch new creative on fixed days. The creative team should deliver to that calendar, not whenever a file is ready.
- Keep one test log. Every concept, the idea behind it and the result, in a document your business owns and both suppliers update.
The other hand-offs worth assigning, such as the match between the ad's promise and the paywall, are set out in the seams table in our comparison of specialist UA agencies and full-service app marketing agencies.
If you combine: five protections
- Own the accounts. The ad account, app events, MMP and subscription data sit in your business, with the agency added as a partner.
- Own the files. Final ads and editable source files, delivered as you go, not on exit.
- Ask for results by concept. A report that shows cost per trial or per subscriber for each concept makes it hard to hide a weak creative half behind a blended number.
- Check against your own revenue data. Compare what the agency reports with what your subscription platform shows for the same cohorts.
- Get an outside view now and then. You do not need a second agency on retainer to get independent challenge. A yearly review by someone with no stake in the answer, using a scorecard like the one in our guide to auditing a mobile app marketing agency, does the same job for far less.
Why we combine them, and when we should not be hired
We built The Social Outline as one team for Meta Ads and performance creative because, in our experience, the hand-over between the two is where app accounts lose most of their learning. Our published pricing reflects that: every tier includes creative strategy, production, Meta campaign management and monthly reporting for one flat monthly fee, not a percentage of spend. Our LingoLooper case study is an example of why we like having both levers in one place. The work there was a tighter creative strategy and a simpler account structure together, and the published result was 49% more revenue and 116% more trials in two months. The page does not separate how much came from each change, and we would not try to.
The risks above apply to us too. Meta is our specialism, so we are not the right partner for an app that needs deep coverage of several ad networks, and we do not offer app store optimisation or lifecycle marketing. If you have a strong in-house media buyer and only want concepts, a creative-only supplier is the leaner purchase. If your own team already makes winning ads, a buyer or a freelancer is. Some of our clients do keep an in-house creative team alongside our Meta Ads management, and in those cases we share what is working at ad level so their team can use it. That is the access rule from the split list, applied the other way round.
If creative supply on Meta is your constraint and nobody in house has time to run the loop, that is the case our performance creative agency model is built for, and you can apply to work with us. If you are earlier in the search, our guide to choosing a mobile app marketing agency covers the wider field, and our ranking of Meta Ads agencies for mobile apps compares the combined and media-only options by name.
Frequently asked questions
Is it better to use one agency for Meta ads and creative?
For most mobile apps without an in-house media buyer or creative team, yes. One team making the ads and running the account shortens the time between seeing a result and briefing the next ad, and it leaves one party accountable for the outcome. It is not better if you already have a strong in-house buyer or a creative team that produces winning ads, or if you run several channels at a spend where specialist depth matters more than speed.
What are the risks of one agency doing both media buying and creative?
There are four. One half is often weaker than the other, and the stronger half hides it. Nobody independent checks the work, because the team that made the ad also reports on whether it worked. You depend on one supplier for both the account and the creative supply. And you may be paying for a bundled service you only half need. Each risk can be managed with ownership of your accounts and files, reporting from your own revenue data, and an occasional outside audit.
Can a creative agency and a separate media buying agency work well together?
Yes, if the hand-offs between them have owners. The creative team needs direct access to the ad account, not a monthly report. One named party writes the briefs, one named party decides whether a concept worked, both use the same source of revenue data, and new ads are launched on an agreed schedule so the media side can manage learning. Without those rules, results reach the creative team late and each supplier can blame the other when performance drops.
Does it cost more to use two agencies than one?
Usually, because you pay two fees and two sets of account management, and someone on your side spends time passing information between them. It is not always more expensive. A creative-only supplier plus an in-house or freelance buyer can cost less than a combined retainer. Compare the two set-ups on the same scope: who researches, who briefs, who produces, who launches and who reads the results.
How can I tell whether a combined agency is strong at both?
Ask to meet the person who will write your briefs and the person who will run your account, and ask each a question from the other's field. Ask how many distinct concepts, not assets, the last client received in a month. Ask which optimisation event they would choose for your app and why. Ask to see a test log where a concept failed and what was briefed next. An agency that is strong on both sides answers all four without handing the call to someone else.
The short version
Put media buying and creative with one agency when you have neither in house, because the speed of the loop is worth more than anything a second supplier adds. Split them when you already own one half, or when your spend and channel mix justify specialists, and then give the creative team account access and name one owner for the brief and the read. In both cases, test each half separately before you sign, own your accounts and files, and judge the set-up by how quickly a result becomes the next brief.