When people see that DoseStream costs £8.75 — once, forever — they're sceptical. It's not because £8.75 is expensive. It's because we've been trained to expect subscriptions from every app that touches our lives. £9.99/month for music. £10.99/month for streaming. $59.99/year for medication reminders.
So how does DoseStream survive on £8.75? The answer is simple: the economics work because the costs are low, the model is honest, and the mission isn't profit maximisation.
The Subscription Epidemic
Subscriptions have become the default business model for mobile apps — not because they're the best option for users, but because they're the best option for investors. A subscription creates predictable, recurring revenue. It satisfies growth metrics. It makes a company attractive to acquisition.
Subscriptions don't exist because apps need them. They exist because investors need them. Users are the ones who pay.
Other medication apps charge more than £40 a year for premium features. Over five years, that's over £200. For a medication reminder app. The features that justify that price — unlimited medications, family sharing, advanced reminders — are features that DoseStream includes for £8.75. So where does all that money go?
It goes to the things DoseStream doesn't have: a large team, investor returns, marketing budgets, and the infrastructure required to sustain a data business. DoseStream doesn't have any of those things. DoseStream has one developer and a commitment to keeping health tools affordable.
The Economics: Why £8.75 Works
Here's the actual breakdown of how DoseStream sustains itself on a one-time purchase:
1. No Recurring Server Costs for Basic Features
DoseStream's core features — medication reminders, food intelligence, injection tracking — run entirely on your device. They don't need a server. The FoodIntelligenceDatabase is bundled in the app. The InjectionSiteTracker stores data locally. The escalating reminder system is a notification manager, not a cloud service.
This means the £8.75 you pay covers the features you use most — and they cost nothing per user to maintain after download.
2. Cloudflare Workers Free Tier Handles Relay
The only feature that requires server infrastructure is care circle sync — and that's where the architecture matters. DoseStream uses Cloudflare Workers for encrypted data relay. Cloudflare's free tier handles 100,000 requests per day. For an indie app with a growing user base, this is more than sufficient.
The relay server doesn't decrypt or process data — it just forwards encrypted bytes. No heavy computation. No database queries. No expensive infrastructure.
3. Supabase Pro Handles Sync
For the encrypted sync that powers care circles, DoseStream uses Supabase Pro at $25/month. This handles authentication, real-time subscriptions, and database operations for all users. At £8.75 per download, even a modest number of monthly downloads comfortably covers this cost.
4. Volume Compensates for Low Margin
The margin on each £8.75 sale is thin — after Google Play's 15-30% cut and UK VAT, DoseStream nets roughly £2 per sale. But the marginal cost per additional user is effectively zero. There's no per-user server cost for core features. No per-user support team (it's one developer). No per-user marketing spend.
Volume makes the model work. 100 downloads per month = £200 net. 500 downloads = £1,000. 1,000 downloads = £2,000. For a solo developer with low overhead, this is sustainable.
What DoseStream Doesn't Spend Money On
- Investor returns: No VC funding. No equity to service. No growth targets to meet.
- Large team: One developer. No offices. No HR department.
- Data infrastructure: Ed25519 encryption means DoseStream's servers can't read your data — so there's no need for expensive data infrastructure, analytics pipelines, or compliance teams managing data access.
- Marketing: No paid ads. No influencer campaigns. Growth is organic.
- Customer support team: Support is handled directly by the developer.
The Comparison
The Philosophy
The subscription model in health tech creates a two-tier system: those who can afford to pay annually get the best tools, and those who can't get the basic version. In a context where medication adherence affects health outcomes, this is ethically indefensible.
If your medication reminder app puts essential features behind a £40+/year paywall, it's not a health tool — it's a luxury product disguised as one.
DoseStream costs £8.75 because:
- Everyone deserves good health tools, not just those who can afford subscriptions
- The cost of building and running the app is genuinely low
- The developer doesn't need to get rich — the app needs to sustain itself
- A one-time purchase removes the psychological burden of another monthly bill
- It aligns incentives: DoseStream succeeds when it's useful, not when it's addictive
What About Free Apps?
There are free medication reminder apps. They're typically funded by ads, data selling, or both. The "free" price tag means you're paying with your data instead of your money — and in health tech, that data is far more valuable than £8.75.
A free app that shows you ads for medications based on your conditions isn't free. It's a data pipeline that uses your health information to generate advertising revenue. DoseStream has no ads, no data selling, and no hidden revenue streams. The £8.75 is the entire business model.
The Bottom Line
£8.75 isn't a loss leader. It's not a trial price. It's not a promotional discount. It's the price of a complete, privacy-first medication management app — escalating reminders, food intelligence, injection tracking, care circles, Ed25519 encryption, health reports — with no recurring cost and no data selling.
It works because the costs are low, the model is honest, and the developer is one person who believes that health tools should be accessible to everyone — even an elderly person on a pension. Not just those who can afford £40 a year.