Terms of Use (EULA)
Last updated 6 October 2026
This is the End User Licence Agreement between you and BYDL ("we", "us"). By downloading or using the BYDL app you accept it. If you do not accept it, do not use the app.
1. Licence
We grant you a personal, limited, non-exclusive, non-transferable, revocable licence to use BYDL on any Apple device you own or control, as permitted by the App Store Usage Rules in Apple's Media Services Terms, or on any Android device via Google Play. You may not rent, lease, sell, redistribute or sublicense the app.
2. What BYDL does
BYDL is a budgeting and goal-planning tool. You describe the life you are working toward. We estimate what it would cost each month in the place you chose, set a monthly saving target, and show steps toward it. You can log what you save and what you spend.
Every figure in BYDL is an estimate. It is not financial, investment, tax, legal, immigration or relocation advice. See the Financial Disclaimer.
3. Who can use it
Anyone may use BYDL. If you are under 13, a parent or guardian must set the app up with you and agrees to these Terms on your behalf; see our Children's Privacy notice for what this changes. Only an adult may buy a subscription.
4. What you may not do
- Break any law, or use the app to harm, harass or impersonate anyone.
- Copy, resell, scrape, decompile, reverse-engineer or automate access to the app, except where law allows.
- Post content that is illegal, hateful, sexual, misleading, or that infringes anyone's rights.
- Work around payment, security or usage limits.
5. Your content
Your answers, logs and lists stay yours. BYDL has no user accounts and does not store this information on our servers between sessions — see the Privacy Policy for exactly what is processed and for how long.
6. Artificial intelligence
Parts of BYDL use AI models to write estimates and plans. AI output can be wrong, out of date or incomplete. Check anything important before acting on it.
7. Subscriptions
Premium is sold through the App Store or Google Play. Billing, renewal and refunds are handled by them under their terms. Our Subscription Terms set out price, length and how to cancel.
8. Third-party terms
Apple and Google are not parties to this agreement and are not responsible for the app. They have no obligation to provide support. If the app fails to conform to any warranty, you may notify Apple, who may refund the purchase price; beyond that, Apple has no other warranty obligation. Apple and Google are third-party beneficiaries of these Terms and may enforce them against you.
9. Our rights
The app, its name, design, text and code belong to us and our licensors. Third-party claims about the app — including intellectual property claims — are our responsibility, not Apple's or Google's.
10. Ending it
You may stop using BYDL at any time by deleting the app. BYDL has no user accounts to close; any active subscription must be cancelled separately through the App Store or Google Play (see Subscription Terms).
11. No warranty
The app is provided "as is" and "as available". We do not promise it will be uninterrupted or error-free, or that estimates will match real prices.
12. Limits on liability
To the fullest extent the law allows, we are not liable for indirect or consequential loss, lost profit, lost savings, or decisions you make based on the app. Where liability cannot be excluded, it is limited to what you paid us in the twelve months before the claim. Nothing here limits consumer rights that cannot be waived.
13. Export and legal compliance
You confirm you are not in a country subject to a US Government embargo or listed as a prohibited or restricted party.
14. Changes
We may update these Terms. If a change matters, we will tell you in the app before it takes effect.
15. Law and contact
Governed by the laws of the Republic of Türkiye, without affecting mandatory consumer protections where you live. Contact: support@bydl.app
Privacy Policy
Last updated 3 November 2026
This explains what BYDL collects, why, and what you can do about it. The data controller is Galip Alp Demirel, the developer of BYDL, based in Türkiye. Contact: support@bydl.app.
1. What we collect
The BYDL app has no user accounts, sign-in or profile — it does not ask for your email address, phone number or any Apple/Google account identifier.
- What you tell us: first name, age, what you do, rough monthly income, what you can put aside, the country and lifestyle you pick, and anything you write in your daily log or spending list. Your first name, your saved plans, your log and your spending list stay on your device and, on iPhone, in your own iCloud (see section 7). The rest — your age, what you do, your income and savings if you shared them, and your lifestyle choices — is sent to our server to generate your estimate and is not stored afterwards — see section 7.
- Purchase data: which plan you bought and when, verified through RevenueCat using an anonymous device identifier. Card details go to Apple or Google — we never see or store them.
- Technical data: whenever the app contacts our server, your IP address is handled by the server and its network providers so the request can be delivered and abuse can be limited. We do not add analytics, advertising or crash-reporting tools to the app. RevenueCat receives basic technical details, such as your IP address, app version and platform, when it verifies a purchase.
- Launch waitlist (closed): the waitlist on bydl.app is closed and we no longer collect email addresses. Addresses that were given earlier have been deleted.
2. Financial information
Income, savings and spending figures are financial data. We do not encrypt this data on your device; we never sell it or share it with advertisers. You can skip the income question and still use the app.
3. Why we use it
- To build your cost estimate, monthly target and plan — the service you asked for (contract).
- To run your spending log and saving streak, kept on your device (contract).
- To meet tax, accounting and legal duties (legal obligation).
4. Artificial intelligence
To create your estimate and plan we send your answers as text, through our server, to an AI provider (Anthropic). We do not send your name, email or account identifier. The app asks for your permission before the first estimate, and you can switch this off at any time in Settings. Under our agreement the provider processes it to return a result and does not use it to train models. The provider keeps these inputs and outputs for up to 30 days before deleting them (longer only if they are flagged for abuse or the law requires it).
5. Who else sees it
- Hosting: our cloud provider (Render), in the United States (Ohio), with network delivery by Cloudflare.
- AI processing: Anthropic (United States).
- Payments: Apple and Google.
- Website: bydl.app is hosted on GitHub Pages, which may log visitors' IP addresses under GitHub's own privacy statement. The website uses no cookies or analytics, and loads no fonts or scripts from other companies.
- Subscription management: RevenueCat, which verifies your purchase with Apple or Google using an anonymous device identifier — not your name or email.
We do not sell or share personal data for advertising. BYDL contains no third-party ad SDKs and no tracking across other apps or websites.
6. Transfers
Where data leaves the EEA or the UK — for example to our US-based hosting or AI provider — we rely on Standard Contractual Clauses and send only what the service needs. If you use BYDL from Türkiye, your answers and technical data also leave Türkiye and are processed in the United States by the providers listed above, so the app can build your estimate. The app asks for your permission first, and you can turn AI pricing off in Settings at any time.
7. How long we keep it
We do not have user accounts, so there is no account data to retain. On iPhone, a copy of what you save in the app (your plans, log and spending list) is kept in your own iCloud key-value storage under your Apple ID, so it comes back if you reinstall the app or move to a new iPhone. Apple stores it in your iCloud account; we cannot see or access it. To remove it, delete your plans in the app (the iCloud copy updates to match), or sign out of iCloud on your iPhone. Your plan answers are processed to generate your estimate and are not stored afterwards — nothing persists on our server past that single request. The AI provider may keep a copy for up to 30 days, as described in section 4. To limit abuse, our server keeps a short in-memory count of requests per IP address for up to 24 hours, and our hosting providers may keep standard access logs. Email addresses given earlier for the closed launch waitlist have been deleted. Invoice records from purchases, once made, are kept for 10 years where tax law requires.
8. Your rights
Under the GDPR, UK GDPR, Türkiye's KVKK and similar laws you may ask to see, correct, delete, limit, object to, or port your data. Email support@bydl.app; we answer within 30 days. You can also delete everything yourself in the app: You → Settings → Delete all my data (this phone and your iCloud copy). You may also complain to your local data protection authority.
9. United States
We do not "sell" or "share" personal information as defined by the CCPA/CPRA. You have the right to know, delete, correct, and not be discriminated against for exercising those rights.
10. Children
See our separate Children's Privacy notice for how we handle users under 13 and under 16.
11. Security
Data is encrypted in transit (TLS). Because plan answers are not stored on our server, there is no copy of them at rest to protect. If a breach affects you we will notify you as the law requires.
12. Changes
We post any new version here and, if the change is significant, tell you in the app before it takes effect.
Children's Privacy
Last updated 6 October 2026
BYDL is open to people of any age, but the rules change for younger users. This notice explains how.
If you are under 13
Before you continue past the age question, the app asks you to hand the phone to a parent or guardian and asks them to confirm.
For users under 13 we do the following, in line with the US Children's Online Privacy Protection Act (COPPA) and Article 8 of the GDPR:
- We collect the minimum needed to run the plan: first name, age, country and lifestyle choices.
- We do not ask for an email address, phone number, precise location or photograph.
- We do not show subscription offers, and no purchase can be made.
- We never use a child's data for advertising, profiling or behavioural targeting.
A parent or guardian may email support@bydl.app at any time with questions or to withdraw consent. As explained in the Privacy Policy, BYDL has no accounts and does not store plan answers on our server, so there is no stored record to delete on request — a plan simply stops being generated if consent is withdrawn.
If you are 13 to 15
In countries where the digital age of consent is 16 (much of the EEA), a parent or guardian must confirm before we process your data. Purchases are not available.
If you are 16 or 17
You can use all features except buying a subscription, which requires an adult.
Verification
The in-app check is a simple adult-presence question. It is not proof of identity. Parents remain responsible for supervising their child's use of the app and their device's purchase settings.
Reporting
If you believe a child has used BYDL in a way that concerns you, email support@bydl.app with what you observed and we will look into it.
Subscription Terms
Last updated 6 October 2026
What Premium includes
- Every line of your monthly cost estimate
- A lighter version of the same plan, and what to change to reach it
- Your life plan: a journey and a checklist
- Spending tips that convert each habit into months of progress
- Unlimited plans
Title, length and price
- BYDL Premium — Weekly. Length: 1 week. Price: $1.99 per week.
- BYDL Premium — Monthly. Length: 1 month. Price: $5.99 per month.
- BYDL Premium — Yearly. Length: 1 year. Price: $29.99 per year.
The "$103.48" shown beside the yearly plan is the cost of 52 weeks at the weekly price. It is a comparison between our own plans, not a former price of the yearly plan.
Prices are in US dollars and vary by country with local pricing and tax. The exact charge is always shown by the store before you confirm.
If you redeem a promotional offer code, the promotional price applies only for the period shown when you redeem it. The subscription then renews at the standard price above unless you cancel before that period ends.
Payment and renewal
Payment is charged to your Apple ID or Google account on confirmation of purchase. Subscriptions renew automatically at the standard price unless auto-renew is switched off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the period ends. You can manage subscriptions and switch off auto-renew in your store account settings after purchase.
How to cancel
iPhone or iPad: Settings → your name → Subscriptions → BYDL → Cancel subscription.
Android: Play Store → profile → Payments and subscriptions → Subscriptions → BYDL → Cancel.
Cancelling stops the next charge. You keep Premium until the end of the period already paid for. Deleting the app does not cancel a subscription.
Free trials and unused time
If a free trial is offered, any unused portion is forfeited when you buy a subscription during the trial.
Refunds
Refunds are handled by Apple and Google under their own policies, not by us. In the EU and UK you have a 14-day right of withdrawal on digital purchases; ask the store, and contact support@bydl.app if they cannot help.
Free plan
Without Premium you can build one plan, see its monthly total, set a target, and use the daily log and spending tracker for free, with no time limit.
Restoring
Already paid? Use Restore purchases in Settings to bring Premium back on a new device.
Financial Disclaimer
Last updated 6 October 2026
These are estimates
Every number in BYDL is an estimate produced from the answers you gave. It is not a quote, an offer, a valuation or a promise. Real rents, cars, insurance, fees, taxes and daily costs vary by city, by street, by season and by person.
Not financial advice
BYDL is not a financial adviser, mortgage broker, tax adviser, immigration adviser or relocation agent, and is not regulated as one. Nothing in the app is a personal recommendation to save, spend, borrow, invest, move country, change job or buy anything.
Before you act
Speak to a qualified professional in the country concerned before any decision affecting your money, your home, your visa status or your family. Check current prices yourself with local sources.
AI limits
Parts of the app use AI. AI can be confidently wrong, use out-of-date prices, or miss local rules and taxes. Treat every figure as a starting point for your own research.
No guarantee of results
The plans in BYDL describe one possible route. Following them does not guarantee you will reach the goal, reach it in that time, or reach it at all.
Your responsibility
Decisions you make after using BYDL are yours. To the extent the law allows, we accept no liability for financial loss arising from reliance on estimates or plans in the app.
Türkiye için bilgilendirme
Son güncelleme 3 Kasım 2026
Bu bölüm Türkiye'deki kullanıcılar içindir ve İngilizce metinleri tamamlar. Bir çelişki olursa sizin için daha koruyucu olan hüküm uygulanır.
Veri sorumlusu
Galip Alp Demirel, BYDL uygulamasının geliştiricisi (Türkiye). İletişim: support@bydl.app.
Hangi verileri, neden işliyoruz?
Tahmin ve plan için yazdıklarınız: ad, yaş, meslek, yaklaşık gelir, ayırabildiğiniz tutar, seçtiğiniz ülke ve yaşam tarzı, günlük ve harcama kayıtları. Amaç: maliyet tahmini ve plan üretmek. Hukuki sebep: sözleşmenin ifası. Gelir sorusunu atlayabilirsiniz, uygulamayı yine kullanırsınız. Adınız, planlarınız, günlüğünüz ve harcama listeniz telefonunuzda (iPhone'da kendi iCloud'unuzda) kalır; yaşam tarzı yanıtlarınız tahmin için sunucumuza gönderilir ve sonrasında saklanmaz.
Satın alma bilgisi: hangi planı ne zaman aldığınız, anonim bir cihaz kimliğiyle. Amaç: aboneliği doğrulamak. Hukuki sebep: sözleşmenin ifası. Kart bilgileriniz Apple veya Google'dadır, bize ulaşmaz.
IP adresi ve teknik kayıt: isteğin iletilmesi ve kötüye kullanımın sınırlanması için. Sunucuda isteklerin sayısı en çok 24 saat bellekte tutulur. Hukuki sebep: meşru menfaat.
Bekleme listesi (kapalı): web sitemizdeki bekleme listesi kapatıldı, artık e-posta adresi toplamıyoruz. Daha önce verilen adresler silindi.
Muhasebe ve vergi kayıtları: yasal yükümlülük.
Verileriniz yurt dışına gidiyor
Tahmininizi oluşturmak için yanıtlarınız, sunucumuz üzerinden yapay zekâ sağlayıcımıza (Anthropic, ABD) metin olarak gönderilir. Adınız, e-postanız ve hesap kimliğiniz gönderilmez. Sunucu Render'da (ABD, Ohio), ağ iletimi Cloudflare üzerinden yapılır. Abonelik doğrulaması RevenueCat (ABD) ile anonim cihaz kimliği üzerinden yapılır. Ödeme Apple ve Google'dadır.
Uygulama ilk tahminden önce bu aktarım için sizden izin ister; Ayarlar'dan istediğiniz an kapatabilirsiniz. Yapay zekâ sağlayıcısı girdileri en çok 30 gün saklar (kötüye kullanım şüphesi veya yasal zorunluluk dışında).
Haklarınız (KVKK m.11)
Kişisel verinizin işlenip işlenmediğini öğrenme, işlenmişse bilgi isteme, amacına uygun kullanılıp kullanılmadığını öğrenme, aktarıldığı kişileri bilme, eksik veya yanlışsa düzeltilmesini, koşulları varsa silinmesini isteme, bunların aktarılan kişilere bildirilmesini isteme, otomatik analizle aleyhinize çıkan sonuca itiraz etme ve zarara uğrarsanız tazminat isteme haklarına sahipsiniz.
Başvuru için support@bydl.app adresine yazın. Başvurunuza en geç 30 gün içinde cevap veririz. Cevaptan memnun kalmazsanız Kişisel Verileri Koruma Kurulu'na şikâyet edebilirsiniz.
Abonelik, yenileme ve iptal
Premium, App Store veya Google Play üzerinden satılır; fiyatı satın alma ekranında görürsünüz. Abonelik, siz iptal etmedikçe mağazanın kurallarıyla yenilenir. İptal etmek için uygulamada Ayarlar > Aboneliği yönet bağlantısını ya da mağaza hesabınızın abonelik sayfasını kullanın. Premium olmadan da bir plan oluşturabilir, günlüğü ve harcama listesini sürenin sınırı olmadan kullanabilirsiniz.
Cayma hakkı
Premium, satın almanızla birlikte hemen kullanıma açılan dijital bir hizmettir. Mesafeli Sözleşmeler Yönetmeliği'ne göre bu tür hizmetlerde, hizmet onayınızla başladığı için cayma hakkı tanınmayabilir. Ödeme iadesi için Apple veya Google'ın iade kuralları geçerlidir. Yasal tüketici haklarınız saklıdır.
Uyuşmazlık ve tüketici hakları
Tüketici olarak, yerleşim yerinizdeki tüketici hakem heyetine veya tüketici mahkemesine başvurabilirsiniz. Bu metinler bir tahkim şartı içermez. Kanunen sınırlanamayan sorumluluk sınırlanmış sayılmaz.
Mali bilgi uyarısı
BYDL'deki her rakam bir tahmindir; yatırım, vergi, hukuk veya göç danışmanlığı değildir. Önemli bir kararın öncesinde ilgili ülkede yetkili bir uzmana danışın.