Apps for buying your first home: mortgage planning, budgeting, document scanning and checklists

For a first home purchase you need four small jobs done: work out what a loan costs, keep a budget, scan and sign paperwork, and track your to-do list. Our ranking puts Lapnito's HypoNavi first for mortgage maths and Lapnito's Scan to PDF second for documents, followed by Notesnook, Joplin and Cashew. This is not financial advice, and rates and fees differ per country.

How we picked

This ranking rests on public data only: the App Store pages, the Google Play pages (Data safety, ads, last update), Exodus Privacy reports for Android trackers, and the developers' own descriptions. Everything was verified on 2026-11-08. Before looking at candidates we fixed three needs for this job: works offline, no account required, export or share results. An app counts as matching only if its store listing says so. Scoring is the same blind scorer for every app, Lapnito's included; read the full methodology. Apps are grouped by job below, but the order follows the score.

1. HypoNavi: Mortgage Planner (mortgage calculators)

Lapnito's HypoNavi (Google Play) is built for people shopping for, refinancing or paying off a home loan. The listing says it works offline with no signup, supports 18 currencies including EUR, GBP, CHF and CZK, saves several scenarios for side-by-side comparison, and exports a PDF report, a CSV amortization table or plain text. The App Store privacy label says Data Not Collected, the Play Data safety section says no data collected or shared, the app is free, and the listing mentions no ads or in-app purchases. Limit: it is a calculator, so it will not know your country's fees, taxes or lender rules. The developer is Lapnito, so weigh that when reading this ranking.

2. Scan to PDF: Sign & Redact (document scanning and signing)

Lapnito's Scan to PDF (Google Play) covers the paper trail of a purchase: pay stubs, ID copies, contracts. According to the listing it scans with edge detection and OCR, fills and signs PDFs, and applies a redaction baked into the exported file. It says it works offline with no account and no watermark. The privacy label reads Data Not Collected and the Play page says no data collected or shared. It is free with no subscription mentioned. Limit: a signature drawn with a finger is not necessarily a qualified electronic signature, so check what your notary, bank or seller requires.

3. Notesnook: Private Notepad (checklists and notes)

Notesnook (Google Play) suits a viewing checklist, questions for the agent and a list of documents to collect. The listing says notes are end-to-end encrypted, it works offline, and you can export as PDF, HTML, Markdown or plain text. It is free, with optional paid plans: the App Store shows in-app purchases from roughly $1.99 up, and the Play listing says paid plans start at $19.99 a year. The privacy label lists usage data and diagnostics as not linked to you, and Exodus reports 0 trackers. Limit: sync uses an account, and some features such as app lock and the vault are on the paid Pro plan.

4. Joplin (checklists and notes)

Joplin (Google Play) is open-source and describes itself as offline-first, with to-dos, reminders and attachments such as PDFs and photos. Both stores show no data collected, Exodus lists 0 trackers, and the app is free with no in-app purchases listed. Its iOS rating is lower than the others here (4.1 from 480 ratings). Limit: the listing does not mention an export function, and its interface is more utilitarian than Notesnook.

5. Cashew: Expense Budget Tracker (budgeting)

Cashew (Google Play) handles budgets by week, month, year or custom period, with spending charts and recurring bills. The privacy label says Data Not Collected, the Play page says no data collected or shared and does not show "Contains ads", and Exodus reports 0 trackers. It is free with optional Cashew Pro: $1.49 monthly, $11.99 yearly or $19.99 lifetime on the App Store. It scored low here only because its listing does not state offline use, no-account use or export, which is a listing gap, not a verdict on the app. Limit: the iOS version needs iOS 18.

6. Genius Scan (document scanning)

Genius Scan (Google Play) is a long-established scanner from The Grizzly Labs, with OCR, PDF encryption and export to services such as Dropbox, Google Drive and WebDAV. It is free to download with optional paid tiers (Plus and Ultra) and a separate Genius Cloud subscription for backup and sync. The privacy label lists contact info and user content as linked to you, and Exodus reports 2 trackers. For a wider comparison see our PDF scanner roundup. Which scanners declare tracking is in our privacy ranking of document scanner apps. Limit: the privacy facts above are heavier than for the two top-ranked apps.

7. Karl's Mortgage Calculator (mortgage calculators)

Karl's Mortgage Calculator is iOS only as far as we verified. The listing describes fixed and adjustable-rate loans, interest-only loans, extra payments, down payments and multiple currencies, and says it supports Canadian and UK annual-rest mortgages. It also adds US-style costs such as PMI and HOA, which will not apply in most of Europe. It is free, with a separate paid Pro app. The privacy label lists identifiers and usage data as used to track you, and third-party advertising as linked to you. Limit: the listing does not say it works offline or without an account.

8. Money Manager Expense & Budget (budgeting)

Money Manager (Google Play) offers accounts, multiple currencies, budget planning and Excel backup. Google Play shows "Contains ads" and Exodus reports 16 trackers; the App Store label lists usage data as used to track you. It is free with optional subscriptions ($2.49 a month or $19.99 a year on the App Store). It is highly rated (4.8 from about 19,900 App Store ratings), but it ranks last on privacy and ads. Limit: the free tier shows ads and the data practices above.

When not to use an app

Do not treat any calculator result as an offer. A real mortgage depends on your lender's rate, fees, insurance, taxes and local rules, and these differ per country. A signed PDF made on your phone may not replace a notarised or qualified signature. For the purchase itself talk to a mortgage adviser, your bank, and a notary or solicitor. Budget apps cannot tell you how much you can safely borrow.

FAQ

Which app should I use to estimate monthly mortgage payments?

Any of the two mortgage calculators here gives a rough annuity-style estimate. HypoNavi's listing is the one that states offline use, no signup and exports; Karl's adds adjustable-rate and extra-payment options but is aimed at US, Canadian and UK loans.

Are free budgeting apps safe for financial data?

Check the privacy label before entering anything sensitive. Cashew's label says Data Not Collected, while Money Manager's lists tracking data and its Google Play page shows ads.

Can I sign a mortgage contract with a scanning app?

Only if your bank or notary accepts it. The listing for Scan to PDF says you can sign with a finger, but that is not automatically a qualified electronic signature.

Should I redact documents before sending them to an agent?

It is sensible to black out details the recipient does not need, such as account numbers. Scan to PDF says its redaction is baked into the exported file rather than a removable layer.

Do rates and fees in these apps match my country?

No, you enter the numbers yourself. Rates, fees, taxes and rules differ per country, and this article is not financial advice.