PTH.At a glance
The essentials in 30 seconds
Radi, this is what's included, what it costs and when it's ready — no small print. Everything else in this document is simply the detail behind these four numbers.
Total investment
€36,740
+ VAT · fixed price, no surprises
Delivery time
± 5 months
20–23 weeks, from idea to the stores
Platforms
iOS + Android
App Store and Google Play, worldwide
Warranty
60 days
free fixes after launch
What you get
✓
AI skin analysis — photograph, analyse and get colour suggestions in seconds
✓
Pigment suggestions by brand — matched to the brands each artist works with
✓
Digital client records — history, before/after photos, allergies, consents
✓
Subscriptions with free trial — recurring revenue from day one
✓
English + Portuguese — ready for the global market
✓
Data safe in Europe — encryption and GDPR built in from the start
✓
Published on both stores — I handle the whole process for you
✓
App logo — designed and included at no cost · FREE
How you pay
33% · €12,124.20
on approval — the project starts
33% · €12,124.20
with the beta app working on your phone
34% · €12,491.60
with the app published on both stores
You only pay the next part when you've seen the previous one delivered. It's the industry standard — and your protection.
Real work
668 hours
from specification to the stores, all included
Rate applied
€55/hour
PT market: €40–60 · agencies: €100–200
Surprises
Zero
fixed price; extras only with your approval
PTH.The app
What it will look like, in practice
Three example screens to visualise the idea. They are illustrative concepts — in the first phase of the project we design every screen together, and nothing moves forward without your approval.
Skin analysis✦
UndertoneWarm
FitzpatrickIII
DensityMedium
Analyse with AI
Capture tips
Analysis history
1 · Guided analysisthe app helps take the right photo
Suggestions · Brows✦
Best matches
Warm Honeyyour brand · brows line
94%
Soft Cocoayour brand · brows line
89%
Chestnut 04alternative brand
82%
Why
Warm undertone with medium density: golden-brown tones offset the grey cast as it heals…
Save to client record
2 · Colours with reasoningby brand, with % compatibility
Client record✎
Maria S.34 · client since 2025
BrowsLipsAllergy: nickel
History
Touch-up · 02 Jun 2026Warm Honey + Soft Cocoa (1:1)
First session · 20 Apr 2026Warm Honey · 3RL needle
Reminder: touch-up in October
3 · A memory of your workcolours, brands and progress per client
Market reference: PMU Smart (Spain) charges €79/month for a management app with no AI analysis at all. Your app does what none of them do — colour analysis is the heart of the product, not an extra.
PTH.Scope
What's included
Eight blocks of work, all within the fixed price. If one day you want more than this, you get a quote first — there are never costs you didn't approve.
01 · AI
Skin analysisGuided capture, automatic photo validation and analysis by state-of-the-art AI, with reasoned suggestions.
02 · Clients
Records and historyHealth notes, allergies, consents, before/after photos and colours used, session by session.
03 · Pigments
Brand catalogueColour database by brand/line (up to 15 brands at launch) feeding the suggestion engine.
04 · Revenue
SubscriptionsMonthly and annual plans, free trial period, paywall and per-plan analysis quotas.
05 · World
English + PortugueseBilingual interface; the AI analysis responds in any language. Other languages: future phase.
06 · Trust
Security and GDPRData in the European Union, full encryption, per-account isolation, daily backups, deletion and export.
07 · Stores
Full publicationStore listings, screenshots, submission and review follow-up with Apple/Google until it's live.
08 · Brand
Logo — freeApp logo design included at no cost (market value: €300–800).
Scale
Ready to growArchitecture to go from 100 to 1,000,000 users through infrastructure upgrades — without rewriting the app.
Left for a future phase
→
Education module (courses, videos, certificates) — estimate: €8,250–15,400
→
Marketing website — estimate: €1,500–3,000
→
Additional languages — €400–800 per language
Not included
✕
Marketing and social media management
✕
Third-party running costs (page 9 — they're yours, transparent and low)
✕
Legal services (reference values given on page 9)
PTH.The technology
How the AI works — and what it costs
The app doesn't "contain an AI": it connects, over the internet, to the world's best models (OpenAI, Google or Anthropic) and pays only for what it uses — like electricity. There's no need to build or train a model of our own.
1 · Photo
The artist photographs the skin with guided capture. The app validates quality
for free, on the phone itself.
→
2 · Analysis
The image travels encrypted to the AI model, which returns tone, undertone and characteristics in seconds.
→
3 · Suggestion
The app's engine crosses the analysis with the pigment catalogue and returns the right colours, with reasoning.
Real cost per analysis
0.1 to 0.8 euro cents
official supplier prices, verified on 13·07·2026
An artist on the €14.99/month plan who runs 10 analyses costs 1 to 8 cents of AI. Per-plan quotas put a hard ceiling on this cost — AI never reaches 1% of revenue.
What this means for you
✓
Zero fixed AI cost — with no users, AI costs €0
✓
Grows behind revenue — every cent of AI corresponds to subscription euros already received
✓
Independence — the app can switch AI supplier without being rewritten, if one raises prices
AI cost at scale (10 analyses/artist/month)
| Active artists | AI cost / month | % of €14.99/artist |
|---|
| 100 | 1–8 USD | < 0.5% |
| 10,000 | 140–830 USD | < 0.5% |
| 1,000,000 | 14,000–83,000 USD | < 0.5% |
Prices in USD (suppliers bill in dollars). Conversions and usage are estimates — flagged whenever they are.
A detail that saves money: photo validation happens on the phone, for free, before any paid AI call — blurred or badly framed photos never cost a cent. And if an AI supplier raises prices, the app switches model without being rewritten.
PTH.The path
Three phases, three concrete deliveries
No months in the dark: in every phase you receive something you can see, touch and approve. Development only starts after you approve the designed screens — that's what makes a fixed price possible.
Phase 0 · 3 weeks
Phase 1 · Development · 14–16 weeks
Phase 2 · 3–4 wks
Milestone: screens approved by you
test builds on your phone every 2 weeks
Goal: app live on both stores
Phase 0 · Design
We see the app before building it
Together we define every screen and every function. You receive a clickable prototype (looks like the real app, on your phone) with two rounds of revisions included.
Delivery: prototype + approved specification
Phase 1 · Build
The app comes to life, fortnight by fortnight
Secure backend in Europe, AI analysis, client records, subscriptions. From week 6 you install test versions and follow real progress.
Delivery: complete beta, iOS + Android
Phase 2 · Launch
Real testing and publication
Artists you invite test the beta; I fix whatever comes up; I submit to the stores and follow Apple's and Google's review until it's live.
Delivery: published app + 60-day warranty
I only need you at four moments
Approve the screensat the end of Phase 0 — this locks scope, price and deadline.
30 real casesconsented photos, to tune the AI on real skin.
Test the betayourself and with artists you invite.
Feedback within 5 working daysper milestone — keeps us on schedule.
After launch, if you wish, I stay with you: maintenance retainer €440/month (8h included — iOS/Android updates, fixes, monitoring) or one-off work at €55/h. Your decision, no commitment now.
PTH.Investment
Where every euro goes
668 hours of specialised work at €55/hour — the market rate in Portugal for senior mobile + AI development (sources on the last page). Fixed price: overruns are my risk, not yours.
| Block of work | Hours | Value |
|---|
| Phase 0 — Specification and design | 80 | €4,400 |
| Requirements, architecture and data model | 32 | €1,760 |
| Clickable prototype of every screen (2 revisions) | 48 | €2,640 |
| Phase 1 — Development | 500 | €27,500 |
| AI analysis module and suggestion engine | 96 | €5,280 |
| Secure EU backend + database | 72 | €3,960 |
| Client records and photo history | 72 | €3,960 |
| Testing on real devices + fixes | 64 | €3,520 |
| Accounts, access and GDPR consents | 44 | €2,420 |
| Subscriptions, paywall and free trial | 40 | €2,200 |
| Settings, languages and notifications | 32 | €1,760 |
| Hardened security (encryption, deletion, export) | 32 | €1,760 |
| Brand and pigment catalogue | 24 | €1,320 |
| Technical setup (environments, CI/CD, signing) | 24 | €1,320 |
| Phase 2 — Beta and launch | 88 | €4,840 |
| Store listings, screenshots and metadata | 32 | €1,760 |
| Beta with real artists + fixes | 40 | €2,200 |
| Submission, Apple/Google review and publication | 16 | €880 |
| Total | 668 | €36,740 + VAT |
App logo: free (€0) · Two revision rounds included in Phase 0 · Out-of-scope changes: always quoted first, at €55/h.
Distribution
Phase 0 · 12% — design and prototype
Phase 1 · 75% — building the app
Phase 2 · 13% — testing and launch
The single largest block is the AI analysis (96h) — exactly where your app's unique value lives.
PTH.Market comparison
The same product, three very different prices
These days you hear that "with AI, an app can be built for €3,000". It's true — for a prototype. An app that stores clients' health data, charges subscriptions and passes Apple's review is a different product. The honest comparison:
€3,000–5,000
"Cheap AI" prototype
template / no-code
€36,740
This proposal · PTH
complete product, ready to earn
€60,000–120,000
European agency
same scope, agency overheads
| What you end up with | Prototype €3–5k | This proposal | Agency €60–120k |
|---|
| Works in a demo | ✓ | ✓ | ✓ |
| Health data protected (GDPR, Europe, encryption) | ✗ | ✓ | ✓ |
| Passes Apple and Google review | rarely | ✓ | ✓ |
| Real subscriptions (revenue) on both stores | ✗ | ✓ | ✓ |
| Can grow to 1M users | ✗ | ✓ | ✓ |
| Your code, documented, with warranty | ✗ | ✓ · 60 days | ✓ |
| Cost of rebuilding it all in 6 months | almost certain | — | — |
How does PTH deliver at less than half the agency price? No agency overheads, cross-platform technology (one codebase for both stores), and AI productivity already reflected in the price. The AI discount is already yours.
PTH.Operations
The costs on your side
Full transparency: beyond development, a live app has running costs — all in accounts in your name, so you keep absolute control and ownership. They are low at the start and only grow when revenue grows.
One-off (setup)
| Item | Value |
|---|
| Apple Developer account (yearly) | USD 99/year |
| Google Play account (one-off) | USD 25 |
| Legal texts by a lawyer (recommended) | €1,000–2,500 |
| GDPR impact assessment (DPIA) (recommended) | €1,500–3,000 |
| Domain + professional email | ≈ €12/year + €6.90/month |
| Total setup | ≈ €2,650–5,650 |
The weight is in the legal items — and it's protection money well spent: the app stores health data (allergies, skin conditions), which demands doing things properly from day 1.
Monthly (grows with your users)
| Active artists | Total cost/month* | Per artist |
|---|
| 100 | ≈ 35–45 USD | ≈ 0.40 USD |
| 10,000 | ≈ 250–990 USD | ≈ 0.03–0.10 USD |
| 100,000 | ≈ 2,100–9,300 USD | ≈ 0.02–0.09 USD |
| 1,000,000 | ≈ 22,000–97,000 USD | ≈ 0.02–0.10 USD |
*EU infrastructure + AI + monitoring (+1% of revenue for subscription management above USD 2,500/month). Estimates based on official prices as of 13·07·2026; real usage varies.
At 1 million users, ≈ USD 97,000/month sounds scary? Put it next to revenue: 1M × €14.99 ≈ €15 million/month. Running costs stay below 1%.
The stores keep a share — plan your prices with this in mind
15%
Apple App Store — with the Small Business Program (revenue < USD 1M/year; I handle enrolment). Standard: 30%.
15%
Google Play — 2026 model for subscriptions (10% service + 5% billing).
€12.74
Example: €14.99 subscription → net amount you receive, before taxes and running costs.
PTH.Terms and acceptance
Simple terms, in plain language
1
Fixed price. €36,740 + VAT for everything on page 4. If it takes me more hours, that's my problem.
2
Payment by deliveries: 33% on approval, 33% with the beta on your phone, 34% with the app on the stores.
3
60-day warranty after publication: defects fixed at no cost.
4
The code is yours upon final payment — delivered, documented, in a repository in your name. All accounts (Apple, Google, servers, AI) are yours from day one.
5
Changes and new ideas: always welcome, always quoted in writing first (€55/h) — there are never surprise invoices.
6
Timeline: 20–23 weeks, counted from screen approval. Your feedback within 5 working days per milestone keeps us on schedule.
7
AI suggestions support the artist's professional judgement — they don't replace it. The app will say this clearly (protection for you and the artists).
8
Full confidentiality about your idea and your data. NDA available.
9
Validity: 30 days (until 12 August 2026). VAT at the legal rate; treatment confirmed according to your country of billing.
10
Third-party prices (stores, AI, servers) verified on 13·07·2026 on official pages — suppliers may change them.
Next step
Approve by email or signature — and in 3 weeks Radi sees her app designed, screen by screen.
PTH · Ricardo Barbosa
ola@portalturismoportugal.com
portalturismoportugal.com
The Client — Radi · date ____/____/______
PTH — Ricardo Barbosa · date ____/____/______
Sources for the values quoted (consulted on 13·07·2026): developer.apple.com · support.google.com/googleplay · supabase.com/pricing · revenuecat.com/pricing · sentry.io/pricing · official OpenAI/Google/Anthropic pricing pages · lemon.io · malt.uk · businessofapps.com · cleveroad.com · gdpr-info.eu · cnpd.pt · pmusmart.com. Usage estimates flagged as such; USD→EUR conversions approximate.